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DIY: Find and Replace in a String

Understand how to implement a function that replaces specified substrings in a string when matched at given positions. Learn to handle varying substring lengths and multiple replacements effectively to solve real-world string manipulation problems commonly seen in coding interviews.

Problem statement

For this challenge, you will be given a string, s. Your task will be to perform replacement operations in this string that replace substrings with new ones and return the resultant string. For the replacements, you will be given a list of indices, a list of strings called ...