함수 shuffle()

shuffle
Collections.shuffle

1 Go[ | ]

package main

import (
    "fmt"
    "math/rand"
)

func main() {
    a := []string{"Apple", "Banana", "Orange", "Mango"}
    rand.Shuffle(len(a), func(i, j int) { a[i], a[j] = a[j], a[i] })
    fmt.Println(a)
}

2 Java[ | ]

import java.util.Arrays;
import java.util.List;
import java.util.Collections;
public class MyClass {
    public static void main(String args[]) {
        List<String> list = Arrays.asList("Apple", "Banana", "Orange", "Mango");
        Collections.shuffle(list);
        for (String str : list) {
            System.out.println(str);
        }
    }
}

3 JavaScript[ | ]

let array = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
let shuffled = array
  .map(a => ([Math.random(),a]))
  .sort((a,b) => a[0]-b[0])
  .map(a => a[1])
console.log( shuffled );
let array = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
array.map((el, i, arr) => {
  let r = ~~(Math.random() * arr.length);
  arr[i] = arr[r];
  arr[r] = el;
  return arr;
})[0];
console.log(array);

3.1 jQuery[ | ]

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
(function($){
    $.shuffle = function(arr) {
        for(var j, x, i = arr.length; i; j = parseInt(Math.random() * i), x = arr[--i], arr[i] = arr[j], arr[j] = x);
        return arr;
    }
})(jQuery);

var fruits = ["Apple", "Banana", "Orange", "Mango"];
$.shuffle(fruits);
console.log(fruits);
// ["Orange", "Mango", "Apple", "Banana"]
</script>

4 PHP[ | ]

$arr = ["Apple", "Banana", "Orange", "Mango"];
shuffle($arr);
print_r($arr);

5 Python[ | ]

import random
fruits = ["Apple", "Banana", "Orange", "Mango"]
random.shuffle(fruits)
print( fruits )

6 Ruby[ | ]

fruits = ["Apple", "Banana", "Orange", "Mango"]
shuffled = fruits.sort{ rand }
puts shuffled

7 같이 보기[ | ]

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