feat: Solve pdf viewer

  - Hackerrank

Author: brianr482

pdf-viewer.js

@@ -0,0 +1,35 @@
+/**
+ * Hackerrank
+ * Complete the designerPdfViewer function in the editor below. It should return an integer representing the size of the highlighted area.
+ * designerPdfViewer has the following parameter(s):
+ * - h: an array of integers representing the heights of each letter
+ * - word: a string
+ * 
+ * Constraints:
+ * 1. 1 <= h[?] <= 7 where ? is an Englisher lowercase letter
+ * 2. word contains no more thant 10 letters
+ * 
+ * This solution got 20 points
+ * Problem link: http://hr.gs/vnu
+ */
+
+/**
+ * @param {number[]} h Height of each letter in [a-z]
+ * @param {string} word The word to be evaluated to find the area to be highlighted
+ * @return {number} Area to be highlighted
+ */
+function designerPdfViewer(h, word) {
+  // Edge case
+  if (!word || word.length === 0) {
+    return 0;
+  }
+  const aCharCode = 'a'.charCodeAt(0);
+  let maxHeight = -Infinity;
+  for (let i = 0; i < word.length; i++) {
+    const height = h[word.charCodeAt(i) % aCharCode];
+    if (height > maxHeight) {
+      maxHeight = height;
+    }
+  }
+  return maxHeight * word.length;
+}