JS10 Day 3: Arrays

개요

Day 3: Arrays

• https://www.hackerrank.com/challenges/js10-arrays/problem

해커랭크 10 Days of Javascript

#	문제	비고
2-3 Day e
6	JS10 Day 2: Conditional Statements: If-Else
7	JS10 Day 2: Conditional Statements: Switch
8	JS10 Day 2: Loops
9	JS10 Day 3: Arrays
10	JS10 Day 3: Try, Catch, and Finally
11	JS10 Day 3: Throw

---

상단

'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++];
}

구현예시 1

function getSecondLargest(nums) {
    let first = 0;
    for (const num of nums) {
        if (first < num) first = num;
    }
    let second = 0;
    for (const num of nums) {
        if (second < num && num < first) second = num;
    }
    return second;
}

구현예시 2

function getSecondLargest(nums) {
    let first = 0;
    for( let i=0; i<nums.length; i++ ) {
        if( nums[i] > first ) first = nums[i];
    }
    let second = 0;
    for( let i=0; i<nums.length; i++ ) {
        if( nums[i] > second && nums[i] < first ) second = nums[i];
    }
    return second;
}

하단

function main() {
    const n = +(readLine());
    const nums = readLine().split(' ').map(Number);
    
    console.log(getSecondLargest(nums));
}