Problem Suppose there are 5 squares embedded inside a rectangle like this −
Their perimeter will be −
4 + 4 + 8 + 12 + 20 = 48 units
We are required to write a JavaScript function that takes in a number n and return the sum of the perimeter if there are n squares embedded.
Example
Following is the code −
const num = 6; const findPerimeter = (num = 1) => { const arr = [1,1]; let n = 0; let sum = 2; for(let i = 0 ; i < num-1 ; i++){ n = arr[i] + arr[i+1]; arr.push(n); sum += n; }; return sum * 4; }; console.log(findPerimeter(num - 1));
Output
80