Add missing solution

Author: cuklev

Exams/2016-07-05-Variant-2/1. Pockets/solution.js

@@ -0,0 +1,32 @@
+function solve(args) {
+    "use strict";
+
+    let heights = args[0].split(" ")
+        .map(Number);
+
+    let sum = 0;
+
+    for (let i = 2; i < heights.length - 2; i += 1) {
+        if (isPocket(i, heights)) {
+            sum += heights[i];
+        }
+    }
+
+    console.log(sum);
+
+    // return sum;
+
+    function isPocket(index, heights) {
+        return isValley(index, heights) && isPeak(index - 1, heights) && isPeak(index + 1, heights);
+    }
+
+    function isValley(index, valley) {
+        return valley[index] < valley[index - 1] &&
+            valley[index] < valley[index + 1];
+    }
+
+    function isPeak(index, valley) {
+        return valley[index] > valley[index - 1] &&
+            valley[index] > valley[index + 1];
+    }
+}