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function addArr(arr){ return arr.reduce((sum, num) => sum + num, 0) || null }function addArr(arr){if(arr.length === 0) return nulllet final = 0arr.forEach(num => {final += num})return final- function addArr(arr){
- return arr.reduce((sum, num) => sum + num, 0) || null
- }
const chai = require("chai"); const assert = chai.assert; describe("Solution", function() { it("should test for something", function() { assert.strictEqual(addArr([1, 2, 3, 4, 5]), 15); assert.strictEqual(addArr([1, 100]), 101) assert.strictEqual(addArr([]), null) }); });- const chai = require("chai");
- const assert = chai.assert;
- describe("Solution", function() {
- it("should test for something", function() {
- assert.strictEqual(addArr([1, 2, 3, 4, 5]), 15);
- assert.strictEqual(addArr([1, 100]), 101)
- assert.strictEqual(addArr([]), null)
- });
- });