| title | tags |
|---|---|
accumulate |
math,array,beginner |
Returns an array of partial sums.
- Use
Array.prototype.reduce(),Array.prototype.slice(-1)and the unary+operator to add each value to the unary array containing the previous sum.
const accumulate = (...nums) => nums.reduce((acc, n) => [...acc, n + +acc.slice(-1)],[]);accumulate(1, 2, 3, 4); // [1, 3, 6, 10]
accumulate(...[1, 2, 3, 4]); // [1, 3, 6, 10]