[LeetCode] 1347. Minimum Number of Steps to Make Two Strings Anagram ÖÆÔì×ÖĸÒìλ´ÊµÄ×îС²½ÖèÊý

You are given two strings of the same length `s` and `t`. In one step you can choose **any character** of `t` and replace it with **another character*