$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse"); shuffle($my_array); print_r($my_array); ?> 输出: Array ( [0] => Cat [1] => Horse [2] => Dog ) array_rand()定义和用法 array_rand() 函数从数组中随机选出一个或多个元素,并返回。 第二个参数用来...
虽然时间复杂度为O(n),但相较于 Fisher-Yates 算法来说不太常用。 #include<stdio.h>#include<stdlib.h>#includevoidshuffle(intarr[],intn) {for(inti =0; i < n; i++) {intj = rand() % n;// 随机生成索引// 交换 arr[i] 和 arr[j]inttemp = arr[i]; arr[i] = arr[j]; arr[j]...
shuffle([1,2,3,4,5]);//returns [4, 3, 1, 5, 2] //Return a copy of the given array shuffle([1,2,3,4,5],{'copy':true});//returns [4, 3, 1, 5, 2] (copied) shuffle.pick(arr, [options]) Pick one or morerandomelements from the givenarray. ...
Shuffle Array 写一个shuffle数组的算法 给一个数组A[],里面的数是无序的,比如 A[]={1,2,3,7,3,2,5} shuffle完之后,使之满足A[0]<=A[1]>=A[2]<=A[3].. 两种算法。 第一种O(nlogn).对数组排序,然后奇数位置放前一半,偶数位置放后一半。我感觉还需要O(n)的额外空间,在原数组上很难操作。
[options.copy] {Boolean} - Sets if should return a shuffled copy of the given array. By default it's a falsy value. [options.rng] {Function} - Specifies a custom random number generator.shuffle([1,2,3,4,5]); // returns [4, 3, 1, 5, 2] // Return a copy of the given arra...
// 0 => 5// 1 => 2// 2 => 4// 3 => 3// 4 => 1// 5 => 6// Shuffle, preserving keys$array=Array(1,2,3,4,5,6)Array_Shuffle($array,true)// $array may be now:// 2 => 3// 0 => 1// 5 => 6// 1 => 2// 3 => 4// 4 => 5 ...
npm install shuffle-arrayUsageFirst, require the package in your project:const { makeShuffle } = require('shuffle-array');Example 1: Shuffling an array of numbersconst shuffledArray = makeShuffle([5, 6, 1, 9, 4, 3, 4]); console.log(shuffledArray);...
In the following example, we have shuffled the elements of an array using the shuffle() method ? Open Compiler # Import required module import numpy as np # Assign array arr = np.array([11, 22, 33, 44, 55, 66]) # Display original array print("Original array : ", arr) # Shuffle...
To shuffle arrays in PHP, you can use the providedshuffle()function. Theshuffle()function randomizes the order of array elements that you passed as its argument: shuffle(array&$array):bool This function modifies the original array variable. It returns booleantruewhen the shuffle succeeds, otherwi...
Shuffle Array Technique #1 functionShuffle(o){for(varj,x,i=o.length;i;j=parseInt(Math.random()*i),x=o[--i],o[i]=o[j],o[j]=x);returno;}; Usage vartestArray=[1,2,3,4,5];Shuffle(testArray);// jQuery to dump out new values to element with ID of 'dump'$(function(){for...