Initial data commit

Task/Search-a-list/JavaScript/search-a-list-3.js

@@ -0,0 +1,47 @@
+(function () {
+
+  function findIndex(fnPredicate, list) {
+    for (var i = 0, lng = list.length; i < lng; i++) {
+      if (fnPredicate(list[i])) {
+        return i;
+      }
+    }
+    return Error("not found");
+  };
+
+  // DEFINING A PARTICULAR TYPE OF SEARCH MATCH
+
+  function matchCaseInsensitive(s, t) {
+    return s.toLowerCase() === t.toLowerCase();
+  }
+
+  var lstHaystack = [
+    'Zig', 'Zag', 'Wally', 'Ronald', 'Bush',
+    'Krusty', 'Charlie', 'Bush', 'Bozo'
+  ],
+    lstReversed = lstHaystack.slice(0).reverse(),
+    iLast = lstHaystack.length - 1,
+    lstNeedles = ['bush', 'washington'];
+
+  return {
+    'first': lstNeedles.map(function (s) {
+      return [s, findIndex(function (t) {
+          return matchCaseInsensitive(s, t);
+        },
+        lstHaystack)];
+    }),
+
+    'last': lstNeedles.map(function (s) {
+      var varIndex = findIndex(function (t) {
+          return matchCaseInsensitive(s, t);
+        },
+        lstReversed);
+
+      return [
+        s,
+        typeof varIndex === 'number' ?
+          iLast - varIndex : varIndex
+      ];
+    })
+  }
+})();