LeetCode problem solved on Jan 1st

2229.check-if-an-array-is-consecutive.js

@@ -0,0 +1,21 @@
+/* URL of this problem
+ * https://leetcode.com/problems/check-if-an-array-is-consecutive/description/
+ *
+ * @param {number[]} nums
+ * @return {boolean}
+ */
+
+var isConsecutive = function(nums) {
+    const SortedNums = [...nums].sort((a, b) => a - b);
+    const RangeStart = Math.min(...nums);
+    const RangeEnd = RangeStart + nums.length - 1;
+    const RangeNums = [];
+
+    for (let i = RangeStart; i <= RangeEnd; i++) {
+        RangeNums.push(i);
+    }
+
+    return SortedNums.join("") === RangeNums.join("");
+};
+
+module.exports = isConsecutive;

isConsecutive.test.js

@@ -0,0 +1,13 @@
+const isConsecutive = require("./2229.check-if-an-array-is-consecutive");
+
+test("Return true if the input nums contains all the integers in the range", () => {
+    expect(isConsecutive([1,3,4,2])).toBeTruthy();
+});
+
+test("Return false if the input nums misses any integer in the range", () => {
+    expect(isConsecutive([1,3])).toBeFalsy();
+});
+
+test("Return false if the input nums contains Infinity", () => {
+    expect(isConsecutive([1,3,4,2,Infinity])).toBeFalsy();
+});