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Given a string A and two integer B and C.Find and return the substring of A starting from index B and ending with index C.NOTE:Consider 0 based indexing.Try to use direct library function to solve this.Problem Constraints1 <= |A| <= 1000 <= B, C < |A|

Question

Given a string A and two integer B and C.Find and return the substring of A starting from index B and ending with index C.NOTE:Consider 0 based indexing.Try to use direct library function to solve this.Problem Constraints1 <= |A| <= 1000 <= B, C < |A|

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Solution

To solve this problem in Python, you can use the slicing feature of Python strings. Here are the steps:

  1. First, ensure that the string A is not empty and the integers B and C are within the range of the string's length. If not, return an error message or handle it accordingly.

  2. Use the slicing feature of Python strings to get the substring. In Python, you can get a substring by using the syntax string[start:end], where start is the starting index and end is the ending index. Note that the starting index is inclusive and the ending index is exclusive.

Here is a Python function that solves the problem:

def get_substring(A, B, C):
    if not A or B < 0 or C >= len(A):
        return "Invalid input"
    return A[B:C+1]

In this function, A[B:C+1] gets the substring of A starting from index B and ending with index C. The +1 is necessary because the ending index in Python slicing is exclusive.

This problem has been solved

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