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Dutch national flag problem in Javascript

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Dutch national flag problem and solution in Javascript Problem statement:   The Dutch national flag (DNF) problem is one of the most popular programming problems proposed by Edsger Dijkstra. The flag of the Netherlands consists of three colors: white, red, and blue. The task is to randomly arrange balls of white, red, and blue such that balls of the same color are placed together. Now, let's consider an array with 3 distinct values say 0, 1 and 2. We won't be using any sort method and we need to sort this array in 0(n). Input Array :  let   arr  = [ 0 ,  2 ,  1 ,  0 ,  1 ,  2 ,  0 ,  2 ]; Expected Output: [ 0, 0, 0, 1, 1, 2, 2, 2 ] Solution Approach : When we see expected output, we can clearly see that sorted array is divided into 3 sections having values 0 , 1 and 2. So, let's divide the array in 3 sections: a) from 0th index to left boundary b) from left boundary to right boundary c) from right boundary to last index. Now we...
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Hackerearth Arrays Problem: Most Frequent

Hackerearth   Problem and solution in Javascript Problem statement:   Mr. Bourneville loves programming and he likes to face new programming challenges. After completing many challenges he has now given you one challenge which is one of his favorites. He has given you a list of N random integers and he wants you to find the integer which has the maximum frequency in the given list. Mr. Bourneville already has a solution for this but he is not satisfied with his solution. He wants you to write a shortest possible code for this task.  In case Frequency of two numbers is same print the smaller one Input: First line of input contains N, number of integers. Second line will contains N spaces separated integers. Output: Print the most frequent integer. Contraints: 3<=N<=10 4 -10 6 <=Integer<=10 6 Sample Input: 5 1 1 1 2 2 Sample Output: 1 Explanation Clearly, count of 1 more than count of 2. Problem link: click here . Solution Approach: 1). we will sort the arr...
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