Solution: Find the Difference
Explore how to efficiently identify the index of an extra character in one string compared to another using bitwise XOR operations in JavaScript. This lesson guides you through an optimized approach with linear time complexity and constant space use, helping you solve this problem with practical coding techniques.
Statement
Given two strings, str1 and str2, find the index of the extra character that is present in only one of the strings.
Note: If multiple instances of the extra character exist, return the index of the first occurrence of the character in the longer string.
Constraints:
-
str1.length,str2.length - Either
str2.lengthstr1.length + 1, or,str1.length