How to Add to an Array

Pushing to an array

array = ["hello"]
array.push("world");

console.log(array);
//output =>
["hello", "world"]

Pushing element in array in javascript

array = ["hello"]
array.push("world");

Java add element to existing array

//original array
String[] rgb = new String[] {"red", "green"};
//new array with one more length
String[] rgb2 = new String[rgb.length + 1];
//copy the old in the new array
System.arraycopy(rgb, 0, rgb2, 0, rgb.length);
//add element to new array
rgb2[rgb.length] = "blue";
//optional: set old array to new array
rgb = rgb2;

How to add to an array js

var colors = ["blue", "red"];
    colors.push("black")

Js add to array

let arr = [1, 2, 3, 4];

arr = [...arr, 5, 6, 7];

console.log(arr);

How to Add to an Array

#include <vector>
#include <iostream>

int main() {
  std::vector<int> v;
  v.push_back(42);

  std::cout << v.size() << "\n";
  std::cout << v.back() << "\n";
}

Output:
1
42

Source: cppbyexample.com

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