Nodejs Utililty Methods Array Flatten

List of utility methods to do Array Flatten

  1. HOME
  2. Nodejs
  3. A
  4. Array Flatten

Description

The list of methods to do Array Flatten are organized into topic(s).

Method

flat()
Array.prototype.flat = function() {
  return this.reduce(function(a, b) {
    return a.concat(b);
  }, []);
};
var range = function(n) {
  var ret = [];
  for (var i = 0; i < n; i++) {
    ret.push(i);
...
flaten()
'use strict';
var array = [1, 2, 3, 4];
var array = [1, 2, [3, 4],
    [5, 6]
];
var array = [0, ["string", "values"], 5.5, [
    [1, 2, true],
    [3, 4, false]
], 10];
...
flatten()
Array.prototype.flatten = function() {
    return this.reduce(function (a, b) { return a.concat(b instanceof Array ? b.flatten() : b); }, []);
};
flatten()
Array.prototype.flatten = function () {
  var flattened = Array.prototype.concat.apply([], this);
  if (flattened.length == this.length) return flattened;
  else return flattened.flatten();
flatten()
Array.prototype.flatten = function() {
    return Array.prototype.concat.apply([], this);
};
flatten()
Array.prototype.flatten = function() {
    "use strict";
    var flattened = [];
    flattened.concat.apply(flattened, this);
};
flatten()
Array.prototype.flatten = function () {
  return this.reduce(function (flat, toFlatten) {
      return flat.concat(Array.isArray(toFlatten) ? toFlatten.flatten() : toFlatten);
  }, []);
var array = [1, 2, 3, 4];
console.log(array.flatten());
var array = [1, 2, [3, 4], [5, 6]];
console.log(array.flatten());
...
flatten()
Array.prototype.flatten = function()
  var flat = new Array();
  for (var i = 0; i < this.length; i++) {
    for (var j = 0; j < this[i].length; j++) {
      flat.push(this[i][j]);
  return flat;
...
flatten()
Array.prototype.flatten = function () { 
  return this.map((a) => (a.constructor.name == 'Array' && a.length == 1) ? a[0] : a)
flatten()
Array.prototype.flatten = function () {
    var flattenedArray = [];
    function copyArray(arr) {
        for (var i = 0; i < arr.length; i += 1) {
            if (arr[i] instanceof Array) {
                copyArray(arr[i]);
            } else {
                flattenedArray.push(arr[i]);
    copyArray(this);
    return flattenedArray;
};
var arr1 = [1, 2, [3, 4], 5];
console.log('Original:');
console.log(arr1);
console.log();
console.log('Flattened:');
console.log(arr1.flatten());