two sum: first day

Author: nerdrun

two_sum/main.js

@@ -0,0 +1,14 @@
+function twoSum(numbers, target) {
+  let result;
+  for(let i = 0; i < numbers.length - 1; i++) {
+    let sub = target - numbers[i];
+    for(let j = i + 1; j < numbers.length; j++) {
+      if(sub === numbers[j]) {
+        result = [numbers[i], numbers[j]];
+      }
+    }
+  }
+  return result;
+}
+
+module.exports = twoSum;

two_sum/main.test.js

@@ -0,0 +1,25 @@
+const twoSum = require('./main');
+
+test('the array of [1,2] and the parameter 3 returns [1,2]', () => {
+  expect(twoSum([1,2], 3)).toStrictEqual([1,2]);
+});
+
+test('the array of [2,2,1] and the parameter 4 returns [2,2]', () => {
+  expect(twoSum([2,2,1], 4)).toStrictEqual([2,2]);
+});
+
+test('the array of [1,5,3] and the parameter 4 returns [1,3]', () => {
+  expect(twoSum([1,5,3], 4)).toStrictEqual([1,3]);
+});
+
+test('the array of [5,3,1] and the parameter 4 returns [3,1]', () => {
+  expect(twoSum([5,3,1], 4)).toStrictEqual([3,1]);
+});
+
+test('the array of [1234,5678,9012] and the parameter 14690 returns [5678, 9012]', () => {
+  expect(twoSum([1234,5678,9012], 14690)).toStrictEqual([5678,9012]);
+});
+
+test('the array of [1,2,3] and the parameter 4 returns [1,3]', () => {
+  expect(twoSum([1,2,3], 4)).toStrictEqual([1,3]);
+});