Hello Friends in this article i am gone to share Hackerrank 10 days of javascript solutions with you. | Day 2: Conditional Statements: Switch Solution.

Also visit this link:  Day 1: Let and Const Solution

Day 2: Conditional Statements: Switch Solution

Objective

In this challenge, we learn about switch statements.

Task

Complete the getLetter(s) function in the editor. It has one parameter: a string, s, consisting of lowercase English alphabetic letters (i.e., a through z). It must return A, B, C, or D depending on the following criteria:

• If the first character in string s is in the set {a, e, i, o, u}, then return A.
• If the first character in string s is in the set {b, c, d, f, g}, then return B.
• If the first character in string s is in the set {h, j, k, l, m}, then return C.
• If the first character in string s is in the set {n, p, q, r, s, t, v, w, x, y, z}, then return D.

Hint: You can get the letter at some index i in s using the syntax s[i] or s.charAt(i).

Function Description

Complete the getLetter function in the editor below.
getLetter has the following parameters:

• string s: a string

Returns

• string: a single letter determined as described above

Input Format

Stub code in the editor reads a single string denoting s from stdin.

Constraints

• 1 <= |s| <= 100, where |s| is the length of s.
• String s contains lowercase English alphabetic letters (i.e., a through z) only.

Sample Input 0

adfgt

Sample Output 0

A

Explanation 0

The first character of string s = adfgt is a. Because the given criteria stipulate that we print A any time the first character is in {a, e, i, o, u}, we return A as our answer.

Solution – Day 2: Conditional Statements: Switch

'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
});

process.stdin.on('end', _ => {
    inputString = inputString.trim().split('\n').map(string => {
        return string.trim();
    });
    
    main();    
});

function readLine() {
    return inputString[currentLine++];
}

function getLetter(s) {
    let letter;
    // Write your code here
     switch (s[0]) {
        case ('a' || 'e' || 'o' || 'i' || 'u'):
            letter = 'A';
            break;

        case ('b' || 'c' || 'd' || 'f' || 'g'):
            letter = 'B';
            break;

        case ('h' || 'j' || 'k' || 'l' || 'm'):
            letter = 'C';
            break;

        case ('z' || 'n' || 'p' || 'q' || 'r' || 's' || 't' || 'v' || 'w' || 'x' || 'y'):
            letter = 'D';

    }

    
    return letter;
}


function main() {
    const s = readLine();
    
    console.log(getLetter(s));
}