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First Unique Character in a String - LeetCode
Can you solve this real interview question? First Unique Character in a String - Given a string s, find the first non-repeating character in it and return its index. If it does not exist, return -1. …
First Unique Character in a String - LeetCode
Can you solve this real interview question? First Unique Character in a String - Given a string s, find the first non-repeating character in it and return its index. If it does not exist, return -1. …
First Letter to Appear Twice - LeetCode
Iterate through the string from left to right. Keep track of the elements you have already seen in a set.
Find the Number of Ways to Place People I - LeetCode
Can you solve this real interview question? Find the Number of Ways to Place People I - You are given a 2D array points of size n x 2 representing integer coordinates of some points on a 2D …