javascript array unique values
var arr = [55, 44, 65,1,2,3,3,34,5];
var unique = [...new Set(arr)]
//just var unique = new Set(arr) wont be an arrayjavascript array unique values
var arr = [55, 44, 65,1,2,3,3,34,5];
var unique = [...new Set(arr)]
//just var unique = new Set(arr) wont be an arrayjavascript get unique elements in array
function toUniqueArray(a){
var newArr = [];
for (var i = 0; i < a.length; i++) {
if (newArr.indexOf(a[i]) === -1) {
newArr.push(a[i]);
}
}
return newArr;
}
var colors = ["red","red","green","green","green"];
var colorsUnique=toUniqueArray(colors); // ["red","green"]how to create an array with unique values
import java.util.Random;
public class GenRandArray {
//Recommend reseeding within methods
static Random rand = new Random();
public static void fillInt( int[] fillArray ) {
//seeds the random for a new random each method call
rand.setSeed(System.currentTimeMillis());
for(int i = 0; i < fillArray.length; i++)
{
fillArray[i]= rand.nextInt();
/* for loop to check to make sure that none of the previous
numbers added are the same as the one just added. */
for (int j = 0; j < i; j++)
{
/* if so we need to redo the last random number by
moving i back one index to be re-set */
if (fillArray[i] == fillArray[j])
{
i--;
}
}
}
}
}javascript remove uniques from array
function getNotUnique(array) {
var map = new Map();
array.forEach(a => map.set(a, (map.get(a) || 0) + 1));
return array.filter(a => map.get(a) > 1);
}
console.log(getNotUnique([1, 2, 2, 4, 4])); //[2, 2, 4, 4]
console.log(getNotUnique([1, 2, 3] )); //[]Copyright © 2021 Codeinu
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