mean median mode completed

Author: shams-nahid

.idea/workspace.xml

@@ -24,3 +24,4 @@ isPalindrome("Madam I'm Adam", (isPalindrome) => {
     if (isPalindrome == true) console.log('True');
     else console.log('False');
 });
+

isPalindrome.js

@@ -0,0 +1,62 @@
+let getMean = (myArray) => {
+    let sum = 0;
+    myArray.forEach(number => sum += number);
+    return sum/myArray.length;
+};
+
+let getMedian = (myArray) => {
+    myArray.sort((a, b) => a - b);
+
+    let arrayLength = myArray.length;
+
+    if (arrayLength % 2 != 0) {
+        return myArray[parseInt(arrayLength / 2)];
+    } else {
+        return (myArray[arrayLength/2] + myArray[(arrayLength/2) - 1]) / 2;
+    }
+};
+
+let getMode = (myArray) => {
+    let myMap = {};
+    let mode = [], frequency = -1;
+    myArray.forEach((number) => {
+        if (!myMap[number]) {
+            myMap[number] = 0;
+        }
+        myMap[number]++;
+    });
+
+    for (let num in myMap) {
+        if (myMap[num] >= frequency) {
+            if (myMap[num] == frequency) {
+                mode.push(num);
+            } else {
+                frequency = myMap[num];
+                mode = [];
+                mode.push(num);
+            }
+        }
+    }
+    return mode;
+};
+
+let getMeanMedianMode = (myArray, cb) => {
+    let myObject = {
+      mean: getMean(myArray),
+      median: getMedian(myArray),
+      mode: getMode(myArray)
+    };
+
+    return cb(null, myObject);
+};
+
+
+getMeanMedianMode([1, 2, 3, 4, 5, 4, 6, 1], (err, myObject) => {
+    if (err) {
+
+    } else {
+        console.log(myObject);
+    }
+});
+
+