[20141121]JavaScript之Array常用功能汇总*:first-child {margin-top: 0 !important;
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//完美去除法：var arr=[1,3,2,2,11,4];
var arr1=[];
var arr2=arr.sort(function(a,b){return a-b;
}); //把数组进行排序var num=1;
for (var i=0;i<arr2.length;i++){if(arr2[i]!==arr2[(num++)]){arr1.push(arr[i]);}
}
console.log(arr1); 原文：http://www.cnblogs.com/weven/p/7183191.html
引用类型Object类型function a(num){if(num>3){a(--num); }console.log(num); }a(5);//如何创建对象的实例var obj1= new Object();console.log(obj1);obj1.name="吴琼";obj1.age=28;console.log(obj1.name+" "+obj1.age);//对象字面量语法 ，有点封装的感觉var obj2 = {name:"吴琼",age:28};var obj3 = {age:28,age_wo:30};console.log(obj3["age_wo"]);console.log(obj2.name+" "+obj2.age);function show(arg){var s="";if(ar...
JS的类型数组大体可分为3类：无符号整数、有符号整数、浮点数。Int8Array; Uint8Array; Uint8ClampedArray; Int16Array; Uint16Array; Int32Array; Uint32Array; Float32Array; Float64Array;基本上都可以望文生义，看名字就知道怎么回事。但是有一个例外 Uint8ClampedArray ，它与 Uint8Array 颇为相似，但又有所区别。因为颜色数据刚好都是符合8位二进制的无符号整数，所以这两个类型在处理Canvas绘图数据时常常用到。Uint8Clamp...
Warning: Unchecked cast from object to array list本文地址：http://blog.csdn.net/caroline_wendy警告发生在对象(Object)强制转换为数组(ArrayList)类型，如:infos = (ArrayList<VideoInfo>) data.getData();因为对象转换为数组类型，未经过检查，有一定危险.使数组对象强制转换，如ArrayList<?>，比较容易控制风险。但是，为了书写简便和适配其他不规范接口，这么做是可以的。可以在方法(method)前，进行警告抑制(SuppressWarn...
题目：
Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.
Do not allocate extra space for another array, you must do this in place with constant memory.
For example,
Given input array nums = [1,1,2],
Your function should return length = 2, with the first two elements of nums being 1 and 2 respectively.It doesn‘t matter what you ...
publicclass Test
{publicstaticvoid main (String[] args){String[] a = {"roll out", "rule out", "normalcy", "palaver", "satirical", "rut"};//下面提供两种遍历array的方法://第一种方法:for (int i = 0; i < a.length; i++){System.out.println(a[i]);}System.out.println(); //遍历后，换行//第二种方法:for (String item : a){System.out.println(item);}}
} 原文：https://www.cnblogs.com/profesor/p/12924934.html
转载：http://blog.csdn.net/teresa502/article/details/7926796代码：// 删除数组中重复数据function removeDuplElem(array){ for(var i=0; i<array.length; i++){for(var j=i+1; j<array.length;j++){if(array[i]==array[j]){array = removeElement(j,array);//删除指定下标的元素i=-1;break;}} }return array;
}
//删除数组 用到的函数function removeElement(index,array){if(index>=0 && index<array.length){for(var i...
Patching ArrayGiven a sorted positive integer array nums and an integer n, add/patch elements to the array such that any number in range [1, n] inclusive can be formed by the sum of some elements in the array. Return the minimum number of patches required.Example 1:nums = [1, 3], n = 6Return 1.Combinations of nums are [1], [3], [1,3], which form possible sums of: 1, 3, 4.Now if we add/patch 2 to n...
题目难度：Easy题目：Given a sorted array, remove the duplicates in-place such that each element appear only once and return the new length.Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory.翻译：给定一个排好序的数组后，删除重复的元素，这样每个元素只出现一次，并返回新的长度。不要新建另一个数组分配额外的空间，只能通过修改原有...
题目：Given two sorted integer arrays A and B, merge B into A as one sorted array.
Note:
You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are m and n respectively. 题解：这道题是说让B merge到 A 里面。先复习下原本我们在MergeSort里面怎么利用一个新建的数量来merge two array：代码如下： 1 pu...
【033-Search in Rotated Sorted Array（在旋转数组中搜索）】【LeetCode-面试算法经典-Java实现】【所有题目目录索引】原题 Suppose a sorted array 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. If found in the array return its index, otherwise return -1. You may assume no duplicate exists in the array. 题目大...
Suppose a sorted array 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).Find the minimum element.The array may contain duplicates.解题思路：参考Java for LeetCode 081 Search in Rotated Sorted Array II JAVA实现如下： public int findMin(int[] nums) {int left = 0, right = nums.length - 1, res = nums[0];while (left <= right) {res = Math.min(nums[left]...
Java – Check if Array contains a certain value?1. String Arrays1.1 Check if a String Array contains a certain value “A”.StringArrayExample1.javapackage com.mkyong.core;import java.util.Arrays;import java.util.List;public class StringArrayExample1 { public static void main(String[] args) { String[] alphabet = new String[]{"A", "B", "C"}; // Convert String Array to List Li...
属性主要有三个：constructor;length;prototype; constructor(英文意思：构造器):返回对创建此对象的数组函数的引用。例如：var arr=new Array();arr.constructor=Array; length(英文意思：长度):设置或返回数组中元素的数目。注意：长度总是比数组最后的下标大1；设置数组的长度：如果数组比设定的length长，数组将被截断，如果数组长度比设定的length短，则后面用undefined添加； prototype(英文意思：原型)：使您有能力...
