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>#include<time.h>voidshuffle(intarr[],intn) {for(inti =0; i < n; i++) {intj = rand() % n;// 随机生成索引// 交换 arr[i] 和 arr[j]int
当i为1,3,5... 同理, 如果a[ i ] < a[i + 1], 交换使得前i个满足。 1publicstaticint[] shuffle(int[] A) {2for(inti=0; i<A.length-1; i++) {3if(i % 2 == 1) {4if(A[i] < A[i+1]) {5swap(A, i, i+1);6}7}8else{9if(A[i] > A[i+1]) {10swap(A, i,...
$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse"); shuffle($my_array); print_r($my_array); ?> 输出: Array ( [0] => Cat [1] => Horse [2] => Dog ) array_rand()定义和用法 array_rand() 函数从数组中随机选出一个或多个元素,并返回。 第二个参数用来...
<?php function shuffle_assoc(array &$array): void { $keys = array_keys($array); shuffle($keys); $new = []; foreach ($keys as $key) { $new[$key] = $array[$key]; } $array = $new; } $data = ['a' => 1, 'b' => 2, 'c' => 3]; shuffle_assoc($data); print_r...
shuffle_array sin_hyperbolic sin slice_array slice_string small_slice sort_array_and_remove_duplicates sort_array_with_indices sort_array split_fraction split_string square_root SRT_to_matrix string_empty string_ends_with string_find string_join string_length string_lower string_replace string_revers...
The shuffle of Array for PHP shuffles an array. Syntax shuffle( array &$array ): true Parameters array The array. Return Always returns true. Examples 1· array <? $array = [ "a" => 1, "b" => 2, "c" => 3, "d" => 4, "e" => 5, ]; shuffle($array); print_r($array...
shuffle array javascript : The shuffle() function randomizes the order of the elements in the array. Randomize or shuffle array javascript Engine, Measure the
To shuffle arrays in PHP, you can use the providedshuffle()function. Theshuffle()function randomizes the order of array elements that you passed as its argument: shuffle(array&$array):bool This function modifies the original array variable. It returns booleantruewhen the shuffle succeeds, otherwi...
Shuffle Array This page describes code to shuffle an array into random order. In various applications, you may find in useful or necessary to randomize an array. That is, to reorder the elements in random order. This page describes to VBA procedures to do this. The first procedure, Shuffle...
($array, false) // $array may be now: // 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 // ...