Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twice in this array. Could you do it without extra
Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twice in this array. Could you do it without ext
题目 https://leetcode.com/problems/find-all-duplicates-in-an-array/ 题解 没想出来,看了评论之后写的,一语点醒。 思路就是,用num对应index的最高位表示是否出现过。 class Solution {public List<Integer> findDuplicates(int[] nums) {// when fin
升紫了,开心~ A. Alex and broken contest time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output One day Alex was creating
LeetCode 442.Find All Duplicates in an Array Description: Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements tha