Create 0896.js

Author: Barklim

example/ProgrammingSkills/0.Basic/0896.js

@@ -0,0 +1,38 @@
+/**
+ * @param {number[]} nums
+ * @return {boolean}
+ */
+var isMonotonic = function(nums) {
+
+};
+
+const example1 = isMonotonic([1,2,2,3]); // true
+const example2 = isMonotonic([6,5,4,4]); // true
+const example3 = isMonotonic([1,3,2]); // false
+
+console.log(example1);
+console.log(example2);
+console.log(example3);
+
+var isMonotonic = function(nums) {
+    let n = nums.length
+    if (n === 1) return true
+
+    let isInc = true
+    let isDec = true
+
+    for (let i = 1; i < n; i++) {
+        if (!isInc && !isDec) {
+            return false
+        }
+
+        if (nums[i - 1] > nums[i]) {
+            isInc = false
+        }
+
+        if (nums[i - 1] < nums[i]) {
+            isDec = false
+        }
+    }
+    return isInc || isDec
+};