Làm thế nào để bạn kiểm tra lặp lại trong python?

Đưa ra một danh sách các số nguyên có các phần tử trùng lặp trong đó. Nhiệm vụ là tạo một danh sách khác, chỉ chứa các phần tử trùng lặp. Nói một cách đơn giản, danh sách mới phải chứa các phần tử xuất hiện dưới dạng nhiều hơn một

ví dụ

Input : list = [10, 20, 30, 20, 20, 30, 40, 50, -20, 60, 60, -20, -20]
Output : output_list = [20, 30, -20, 60]
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]

Phương pháp 1. Sử dụng phương pháp Brute Force

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
0

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
1

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
2

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
3
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
4

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
6
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
8
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
9

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
31____17
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
38
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
39

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21____17
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
38
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
31

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
32
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
34
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
38
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
34
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
31

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
29
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
27_______223
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
29
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
29
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
29
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
3

Phương pháp 2. Sử dụng một vòng lặp đơn

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
27

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
29
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
34
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36____137
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
43

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
49

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
51

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
53
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36______220
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
57

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
59

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
61

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
2

Phương pháp 3. Sử dụng chức năng Counter[] từ mô-đun bộ sưu tập

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
62
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
63
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
64
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
65

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
66
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
301
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
303

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22____1305

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
306
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
308
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
309
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
311
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
301
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
315
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
317

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
319

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
3

Phương pháp 4. Sử dụng phương thức đếm[]

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
320

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
321

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
308
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
357
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
359
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
360

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
361

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
362

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
364
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
308
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
368
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
369

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
371____17
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
308
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
374

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
376

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
378

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
381____225
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
386
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
389
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
390
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
391

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
32
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
393

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
395

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
396

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
2

Phương pháp 5. Sử dụng phương pháp hiểu danh sách

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
3
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
398

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
308
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
202
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
203
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
204
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
206
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
208
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
210
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
212

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
214
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
217
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
208
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
257

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
258

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
2

Phương pháp 6. Sử dụng cách tiếp cận từ điển danh sách [không có bất kỳ chức năng đếm sẵn nào]

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
3
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
398

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
262
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
264

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36______137
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
269

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20 ________ 136 ________ 137 ________ 2275

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
32
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
277____17
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
281
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
32
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
277____224
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
290______137
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
292

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
295
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
32
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
299

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
306

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
214
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
217
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
208
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
257

 

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
258

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
2

Phương pháp 7. Sử dụng toán tử in, not in và phương thức đếm[]

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
29
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
206
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
387
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36____137
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
43

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
399

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
201

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
36____137
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
399

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
5
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
208
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
367

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
20
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
212

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
214

Đầu ra

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
2

Phương pháp 8. Sử dụng hàm liệt kê

Python3




Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
208
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
7
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
10
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
12
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
04
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
14
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
24
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
26
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
28
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
23
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
30
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
21

Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
22
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
202
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
308
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
202
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
203
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
204
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
35
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
257
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
37
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
259
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
260
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
33
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
210
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
25
Input :  list = [-1, 1, -1, 8]
Output : output_list = [-1]
264

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