Adding solution and test to issue 126

solutions/126.js

@@ -0,0 +1,32 @@
+//Natalie Lockhart
+//Find most frequent value in array
+
+const solution = (arr) => {
+  function count(index){
+	var tempCounter = 0;
+    for (var a = 0; a < arr.length; a++){
+	  if (arr[a] == arr[index]){
+	    tempCounter++;
+	  }
+	  if (tempCounter > counter){
+        counter = tempCounter;
+		mostFrequent = arr[index];
+      } 
+	}
+  } 
+
+  if (arr.length == 0){
+	  return null;
+  }
+
+  var counter = 0;
+  var mostFrequent = arr[0];
+  for (var i = 0; i < arr.length; i++){
+	  count(i);
+  }
+  return mostFrequent;
+};
+
+module.exports = {
+  solution,
+};

test/126.js

@@ -0,0 +1,21 @@
+const expect = require('chai').expect;
+let solution = require('../solutions/125').solution;
+
+describe('most frequent value in array', () => {
+  it('should return null for []', () => {
+    const result = solution([]);
+	expect(result).to.equal(null);
+  });
+  it('should return 1 for [1]', () => {
+    const result = solution([1]);
+	expect(result).to.equal(1);
+  });
+  it('should return 3 for [1,1,2,2,2,3,3,3,3,4]', () => {
+    const result = solution([1,1,2,2,2,3,3,3,3,4]);
+	expect(result).to.equal(3);
+  });
+  it('should return 2 for [2,1]', () => {
+    const result = solution([2,1]);
+	expect(result).to.equal(2);
+  });
+});