copy array to another array code example
Example 1: copy one array to another javascript
/* Copying arrays or parts of arrays in JavaScript */
var fruit = ["apple", "banana", "fig"]; // Define initial array.
console.log(fruit); // ["apple", "banana", "fig"]
// Copy an entire array using .slice()
var fruit2 = fruit.slice();
console.log(fruit2); // ["apple", "banana", "fig"]
// Copy only two array indicies rather than all three
// From index 0 (inclusive) to index 2 (noninclusive)
var fruit3 = fruit.slice(0,2);
console.log(fruit3); // ["apple", "banana"]
Example 2: java copy array
int[] a = {1,2,3,4,5};
int[] b = Arrays.copyOf(a, a.length);
Example 3: js copy array into another
var destinationArray = Array.from(sourceArray);
Example 4: how to copy array in java
// method
public static int [] copyArray(int [] arr){
int [] copyArr = new int[arr.length];
for (int i = 0; i < copyArr.length; i++){
copyArr[i] = arr[i];
}
return copyArr;
}
// Arrays. method
int[] copyCat = Arrays.copyOf(arr, arr.length);
// System
System.arraycopy(x,0,y,0,5); // 5 is array's length
// clone
y = x.clone();
Example 5: assign array to another array
void copy(char[] a){....}
char[] a="Hello";
copy(a);
Example 6: how to copy one array to another in javascript
// 1) Array of literal-values (boolean, number, string)
const type1 = [true, 1, "true"];
// 2) Array of literal-structures (array, object)
const type2 = [[], {}];
// 3) Array of prototype-objects (function)
const type3 = [function () {}, function () {}];