507. Perfect Number (#105)

Author: Kohei Asai

solutions/perfectNumber.test.ts

@@ -0,0 +1,17 @@
+import checkPerfectNumber from "./perfectNumber";
+
+describe("416. Partition Equal Subset Sum", () => {
+  const TEST_CASES = new Map([
+    [28, true],
+    [27, false],
+    [6, true],
+    [1, false],
+    [0, false]
+  ]);
+
+  for (const [nums, expected] of TEST_CASES) {
+    it(`returns ${expected} when called with ${nums}`, () => {
+      expect(checkPerfectNumber(nums)).toBe(expected);
+    });
+  }
+});

solutions/perfectNumber.ts

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+// 507. Perfect Number
+// https://leetcode.com/problems/perfect-number/
+export default function checkPerfectNumber(num: number): boolean {
+  // this problem sucks.
+  return [6, 28, 496, 8128, 33550336].includes(num);
+}