Compare the Triplets

Problem Statement

Alice and Bob each created one problem for HackerRank. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty.

The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]).

The task is to find their comparison points by comparing a[0] with b[0], a[1] with b[1], and a[2] with b[2].

• If a[i] > b[i], then Alice is awarded 1 point.
• If a[i] < b[i], then Bob is awarded 1 point.
• If a[i] = b[i], then neither person receives a point. Comparison points are the total points a person earned.

Given a and b, determine their respective comparison points.

Example

a = [1, 2, 3] b = [3, 2, 1]

• For elements 0, Bob is awarded a point because a[0] .
• For the equal elements a[1] and b[1], no points are earned.
• Finally, for elements 2, a[2] > b[2] so Alice receives a point. The return array is [1, 1] with Alice's score first and Bob's second.

Function Description

Complete the function compareTriplets in the editor below.

compareTriplets has the following parameter(s):

• int a[3]: Alice's challenge rating
• int b[3]: Bob's challenge rating Return
• int[2]: Alice's score is in the first position, and Bob's score is in the second.

Input Format

The first line contains 3 space-separated integers, a[0], a[1], and a[2], the respective values in triplet a. The second line contains 3 space-separated integers, b[0], b[1], and b[2], the respective values in triplet b.

Constraints

• 1 ≤ a[i] ≤ 100
• 1 ≤ b[i] ≤ 100

Sample Input 0

5 6 7

3 6 10

Sample Output 0

1, 1

Explanation 0

In this example:

• a = (a[0], a[1], a[2]) = (5,6,7)
• b = (b[0], b[1], b[2]) = (3,6,10)

Now, let's compare each individual score:

• a[0] > b[0], so Alice receives 1 point.
• a[1] > b[1], so nobody receives a point.
• a[2] < b[2], so Bob receives 1 point.

Alice's comparison score is 1 and Bob's comparison score is 1. Thus, we return the array [1,1],

Sample Input 1

17 28 30

99 16 8

Sample Output 1

2 1

Explanation 1

Comparing the 0th elements, 17 < 99 so Bob receives a point. Comparing the 1st and 2nd elements, 28 > 16 and 30 > 8 so Alice receives two points. The return array is [2,1].

Solution (using Javascript)

In order to solve this, let's have a Pseudocode showing the process on how to actualize the final solution. Pseudocode is an informal way of presenting a programming solution. Pseudocode:

1. Initialize Alice and bob score to zero.
2. loop through both arrays (Alice and Bob) and use conditionals to show Alice or Bob ratings
3. Do a comparison of both ratings individually for every loop.
4. After looping, use the comparison keyword (or any you wish to use) to return the comparison array in the format [x,y].

code snippet ( using Javascript)

function compareTriplets(a, b) {
 // initialize the ratings (Alice and Bob score)
    let aScore = 0;
    let bScore = 0;
  //loop through the arrays
    for (let i = 0; i < 3; i++){
   // compare using conditionals (if..else)
    if (a[i] > b[i]) {
        aScore = aScore + 1;
 }  else if (a[i] < b[i]) {
        bScore = bScore + 1;
    } else {
        (a[i] == b[i]);
        0;
        }     
    }
    const comparison = [aScore, bScore];
    return comparison;    
}

It is observed that the solution can be solved in some other ways but considering using the loops and the conditional statement is of the essence. We continue with this warmup series on hackerrank as I walk you through easy ways of providing solutions to complex algorithms using Javascript. I will like to read your comments and better solutions. Thank you.