mean mode

Author: rohan-paul

.vscode/settings.json

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+{
+    "eslint.enable": false
+}

solutions/First_Reverse.js First_Reverse.jssolutions/First_Reverse.js renamed to First_Reverse.js

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+/* https://coderbyte.com/question/mean-mode
+
+*  Have the function MeanMode(arr) take the array of numbers stored in arr and         *
+*  return 1 if the mode equals the mean, 0 if they don't equal each other              *
+*  (ie. [5, 3, 3, 3, 1] should return 1 because the mode (3) equals the mean (3)).     *
+*  The array will not be empty, will only contain positive integers, and will not      *
+* contain more than one mode.                                                          *
+*                                                                                      *
+*  SOLUTION                                                                            *
+*  Since it is possible that I will want a function that will calculate the mean or    *
+*  mode in the future, I decided to create separate functions for each. The mean is    *
+*  calculated by the average of all values in the array. The mode is the number that   *
+*  exists the most in the array. My solution is to call my two functions and then      *
+*  compare to see if they are equal and if so return 1 else return 0.                  *
+*                                                                                      *
+*  Steps for solution                                                                  *
+*    1) Create separate functions for getMean and getMode                              *
+*    2) Compare the values returned from the two functions                             *
+*    3) If values are equal return 1 else return 0
+*/
+
+mean = arr => (arr.reduce((a, b) => a + b))/(arr.length);
+
+// mode is just the problem of finding the element with greatest no of occurrence
+mode = arr => {
+
+    let obj = {}, max = 1, mode;
+
+    for (let i of arr) {
+        obj[i] = obj[i] || 0;
+        obj[i]++
+    }
+
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if ( obj[i] > max ) {
+                max = obj[i]
+                mode = i;
+            }
+        }
+    }
+    return mode;
+}
+
+meanMode = arr => mean(arr) == mode(arr)
+
+let myArr = [5, 3, 3, 3, 1]
+
+console.log(mean(myArr))
+
+console.log(mode(myArr))
+
+console.log(meanMode(myArr))