freeCodeCamp - 12. Slice and Splice [Basic Algorithm Scripting]
Slice and Splice https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-algorithm-scripting/slice-and-splice www.freecodecamp.org function frankenSplice(arr1, arr2, n) { let a2_1 = arr2.slice(0, n) let a2_2 = arr2.slice(n) let arr3 = [...a2_1, ...arr1, ...a2_2] return arr3; } frankenSplice([1, 2, 3], [4, 5, 6], 1);