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Given an array of integers, every element appears three times except for one. Find that single one.Note:Your algorithm should have a linear runtime complexity. Could you implement it without using

Brute force solutionExceed large judge time limitpublic class Solution { public String strStr(String haystack, String needle) { // Start typing your Java solution below // DO NOT write

O(n^2)public class Solution { public String longestPalindrome(String s) { // Start typing your Java solution below // DO NOT write main() function int len = s.length(); if(len == 0)