Nhiều khi làm việc với chuỗi ta gặp vấn đề với chuỗi con. Điều này có thể bao gồm vấn đề tìm tất cả các vị trí của một chuỗi con cụ thể trong một chuỗi. Hãy thảo luận về những cách nhất định trong đó nhiệm vụ này có thể được thực hiện.
Phương pháp số 1. Sử dụng hiểu danh sách + startedwith[] Tác vụ này có thể được thực hiện bằng hai chức năng. Hàm startedwith chủ yếu thực hiện nhiệm vụ lấy các chỉ số bắt đầu của chuỗi con và khả năng hiểu danh sách được sử dụng để lặp qua toàn bộ chuỗi mục tiêu.
Python3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7______78
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]9
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]0
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]1
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]9
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]0
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]30
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]31
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]32
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]33
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]34
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]36
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]37
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]38
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]39
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]40
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]43
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]45
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]46
đầu ra.
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]
Phương pháp #2. Sử dụng lại. finditer[] Hàm finditer của thư viện regex có thể giúp chúng ta thực hiện nhiệm vụ tìm các lần xuất hiện của chuỗi con trong chuỗi đích và hàm start có thể trả về chỉ số kết quả của từng chuỗi đó.
Python3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]49
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]50
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]51
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7______78
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]9
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]0
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]1
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]9
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]0
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]72
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]76
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]31
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]32
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]33
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]80
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]40
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]43
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]45
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]46
đầu ra.
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]
Phương pháp #3. Sử dụng các phương thức find[] và replace[]
Python3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7______78
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]9
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]0
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]1
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]4
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]9
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]0
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]6
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]3
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]5
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]12
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]13
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]14
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]8
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]16
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]17
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]18
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]19
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]20
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]19
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]7____78
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]24
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]25
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]26
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]36
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]28
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]17
The original string is : GeeksforGeeks is best for Geeks The substring to find : Geeks The start indices of the substrings are : [0, 8, 26]30
Có bao nhiêu lần một chuỗi con xuất hiện trong một chuỗi Python?
Hàm đếm chuỗi Python[] là một hàm sẵn có trong ngôn ngữ lập trình python trả về số lần xuất hiện của một chuỗi con trong chuỗi đã cho. Thông số. Hàm đếm[] có một tham số bắt buộc và hai tham số tùy chọn.
Làm cách nào để kiểm tra xem một chuỗi con có trong danh sách các chuỗi trong Python không?
Phương pháp #2. Sử dụng any[] Hàm any có thể được sử dụng để tính toán sự hiện diện của chuỗi con kiểm tra trong tất cả các chuỗi của danh sách và trả về True nếu tìm thấy nó trong . Điều này tốt hơn chức năng trên vì nó không chiếm dung lượng rõ ràng để tạo chuỗi nối mới.