汤姆大叔的6道javascript编程题题解 看汤姆大叔的博文,其中有篇(猛戳这里)的最后有6道编程题,于是我也试试,大家都可以先试试. 1.找出数字数组中最大的元素(使用Math.max函数) 1 2 3 var a = [1, 2, 3, 6, 5, 4]; var ans = Math.max.apply(null, a); console.log(ans); // 6 这题很巧妙地用了apply,如果不是数组,是很多数字求最大值,我们知道可以这样: 1 2 var ans = Math
javascript 转化一个数字数组为function数组(每个function都弹出相应的数字) var arrNum = [2,3,4,5,6,10,7]; var arrFun = []; function change(arr){ var fun = function(val){ return function(){ return val; }; } for(var i=0;i<arr.length;i++){ arrFun.push(fun(arr[i])); } return ar
考点:数组 题目:二维数组中的查找 描述:在一个二维数组中,每一行都按照从左到右递增的顺序排序,每一列都按照从上到下递增的顺序排序.请完成一个函数,输入这样的一个二维数组和一个整数,判断数组中是否含有该整数. 方式一:选择从左下角开始搜寻,因为选择在左下角搜寻的话,如果目标值大于搜索值,那么就向右继续搜索,如果目标值小于搜索值,那么就向上继续搜索.在左上角就无法形成这样的判断.时间复杂度为:0(lgn) package cn.imooc.java2; public class
题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=4080 Description Dr. Ellie Arroway has established contact with an extraterrestrial civilization. However, all efforts to decode their messages have failed so far because, as luck would have it, the
http://poj.org/problem?id=3415 Common Substrings Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 5805 Accepted: 1911 Description A substring of a string T is defined as: T(i, k)=TiTi+1...Ti+k-1, 1≤i≤i+k-1≤|T|. Given two strings A, B an
HDU 5862 Counting Intersections(离散化+树状数组) 题目链接http://acm.split.hdu.edu.cn/showproblem.php?pid=5862 Description Given some segments which are paralleled to the coordinate axis. You need to count the number of their intersection. The input data guarant
[1].数组字面量 var empty=[]; var num=[ 'zero','one','two','three','four','five','six','seven','eight','nine' ]; document.write("<br/>"+empty[0]);undefined document.write("<br/>"+num[0]);//zero document.write("<br/>&qu
