JavaScript: Move the specified amount of elements to the end of the array
JavaScript fundamental (ES6 Syntax): Exercise-94 with Solution
Move Array Elements to End
Write a JavaScript program to move the specified amount of elements to the end of the array.
- Use Array.prototype.slice() twice to get the elements after the specified index and the elements before that.
- Use the spread operator (...) to combine the two into one array.
- If offset is negative, the elements will be moved from end to start.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
// Define the 'offset' function to offset the elements of an array by a specified amount.
const offset = (arr, offset) => [...arr.slice(offset), ...arr.slice(0, offset)];
// Offset the elements of the array by 2 positions to the right.
console.log(offset([1, 2, 3, 4, 5], 2)); // Output: [3, 4, 5, 1, 2]
// Offset the elements of the array by 2 positions to the left.
console.log(offset([1, 2, 3, 4, 5], -2)); // Output: [4, 5, 1, 2, 3]
Output:
[3,4,5,1,2] [4,5,1,2,3]
Visual Presentation:
Flowchart:
Live Demo:
See the Pen javascript-basic-exercise-94-1 by w3resource (@w3resource) on CodePen.
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