Given an input string, find the first unique character. \t Examples: \t\t "abcda" -> b \t\t "aaabbbccd" -> d \t\t "aaaa" -> \'\' * Given a binary tree, return true if it...

LeetCode Question · Jul 2021

Microsoft Azure | Tech Screen

SWE

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Given an input string, find the first unique character. Examples: "abcda" -> b "aaabbbccd" -> d "aaaa" -> \'\' * Given a binary tree, return true if it...

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Binary Search Binary Tree Strings

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