Learn this from stackflow. public class test { public static void main(String[] args) throws IOException { int [] a={1,2,3,4,4,4,5,4,4}; int r=GetMajorElement(a); System.out.println(r); } //check the element in the array occurs more than half of the…

关于ExtJS对javascript中的Array的扩展.能够參考其帮助文档,文档下载地址:http://download.csdn.net/detail/z1137730824/7748893 因为Array中的方法过多.将当中的部分方法设计实例进行学习.实例地址:http://blog.csdn.net/z1137730824/article/details/38797257 (1)Ext.Array中的方法 clean( Array array ) : Array 过滤掉数组里的空值,空值…

Array.new(5, [1, 2, 3]) or Array.new(5) { [1, 2, 3] } Array.new(size, default_object) creates an array with an initial size, filled with the default object you specify. Keep in mind that if you mutate any of the nested arrays, you'll mutate all of th…

Array.apply(null,{length:20}) 这句代码的实际意义:创建长度为20的一个数组,但并非空数组. 跟new Array(20)的区别在于,前一种创建方式,得到的数组中的每一个元素进行了初始化,将20个元素赋值为undefined,后一种创建方式,创建了一个空数组,里面的元素没有进行初始化.…

leetcode - 33. Search in Rotated Sorted Array - Medium descrition Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). You are given a target value to search.…

这4个题都是针对旋转的排序数组.其中153.154是在旋转的排序数组中找最小值,33.81是在旋转的排序数组中找一个固定的值.且153和33都是没有重复数值的数组,154.81都是针对各自问题的版本1增加了有重复数值的限制条件. 153.154都需要考虑是否旋转成和原数组一样的情况,特别的,154题还需要考虑10111和11101这种特殊情况无法使用二分查找. 33.81则不用考虑这些情况. 找最小值的题主要是利用最小值小于他前一个位置的数,同时也小于后一个位置的数 153. Find Mini…

Array.prototype.push.apply(a,b) 时常看到在操作数组的时候有这样的写法: var a = [1,2,3]; var b = [4,5,6]; a.push.apply(a, b); console.log(a) //[1,2,3,4,5,6] 其实这样的写法等价于: var a = [1,2,3]; var b = [4,5,6]; Array.prototype.push.apply(a, b); console.log(a) //[1,2,3,4,5,6] 这样…

(1)clean var arr = [1,2,null,3,'']; alert(Ext.Array.clean(arr)); //clean的对象:(value === null) || (value === undefined) || (!allowEmptyString ? value === '' : false) || (Ext.isArray(value) && value.length === 0) //结果为1,2,3 (2)difference //difference…

https://stackoverflow.com/questions/4775722/check-if-object-is-an-array One of the weird behaviour and spec in Javascript is the typeof Array is Object. You can check if the variable is an array in couple of ways: var isArr = data instanceof Array; v…

Description Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, wh…