Is it possible to .push() a value to an array but replicate the pushed value n times without using a traditional loop to perform the replication? For instance using .fill(). The examples I have seen declare a new Array() with a length of n, and .fill() it with a value. However, I have not seen any examples dealing with .push(), so I'm not even sure it is possible.
Example of what I'm looking for:
var my_array = [];
for (var i = 0; i < 5; i++) {
my_array.push(5);
};
Scenario:
I'm pulling values from three different arrays or objects to populate a single matrix that will be ran through a Munkres (Hungarian) algorithm, in order to avoid introducing another loop I would like to .push values to the matrix and use .fill() to repeat the value n times.
Example:
var s = […];
var a = […];
var p = […];
var matrix = [];
for (var i = 0; i < s.length; i++) {
var preferences = [];
for (var j = 0; j < p.length; j++ {
var pid = p[j];
for (var k = 0; k < a.length; k++ {
if (pid == a[k]) {
for (var l = 0; l < 5; l++) { // <-- THIS.
preferences.push(a[k]);
};
};
};
};
matrix.push(preferences);
};
You could use concat and fill:
preferences = preferences.concat(Array(5).fill(a[k]));
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