// codewars solution
// leetcode solution
// and more
function sum(arr) {
return arr.reduce( (x,y) => x+y, 0);
}
sum([1, 2, 3, 4]);
// 10
sum([2, 4, 1, 3, 5]);
// 15
// enjoy :)
const arrSum = arr => arr.reduce((a,b) => a + b, 0)var numbers = [3, 5, 7, 2];
var sum = numbers.reduce((x, y) => x + y);
console.log(sum); // returns 17
// other way
x = sumAll(1, 123, 500, 115, 44, 88);
function sumAll() {
var i;
var sum = 0;
for (i = 0; i < arguments.length; i++) {
sum += arguments[i];
}
return sum;
}console.log(
[1, 2, 3, 4].reduce((a, b) => a + b, 0)
)
console.log(
[].reduce((a, b) => a + b, 0)
)[1, 2, 3, 4].reduce((a, b) => a + b, 0)
// Output: 10arrSum = function(arr){ return arr.reduce(function(a,b){ return a + b }, 0);}