[抄题]: Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. [暴力解法]: 时间分析:n^2 空间分析:1 [优化后]: 时间…
Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. Example 1: Input: [1,2,3,1] Output: tru…
笔试时紧张没写出来,静下心后发现简单的要死. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <meta http-equiv="Content-Type" content=&quo…
js对数组元素去重有很多种处理的方法,本篇文章中为网络资源整理,当然每个方法我都去实现了:写下来的目的是希望自己活学活用,下次遇到问题后方便解决. 第一种 function oSort(arr){ var result={}; var newArr=[]; for(var i=0;i<arr.length;i++){ if(!result[arr[i]]){ console.log(result[arr[i]]); //看看输出的是什么 newArr.push(arr[i]); result[a…
面试题查找重复元素并打印重复次数和重复位置,一顿懵逼,回来死磕写下来,打印指定重复次数和最大次数,其他在此基础上可以再更新 package sort; import org.testng.annotations.Test;import sun.org.mozilla.javascript.internal.ast.NewExpression; import java.util.*; /** * Created by liangwei on 2018/10/18. */public class S…