Day 3: Arrays Solution
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Also visit this link: Day 2: Loops Solution
Day 3: Arrays Solution
Objective
In this challenge, we learn about Arrays.
Function Description
Complete the getSecondLargest function in the editor below.
getSecondLargest has the following parameters:
- int nums[n]: an array of integers
Returns
- int: the second largest number in nums
Input Format
The first line contains an integer, n, the size of the nums array.
The second line contains n space-separated numbers that describe the elements in nums.
Constraints
- 1 <= n <= 10
- 0 <= numsi <= 100, where numsi is the number at index i.
- The numbers in nums may not be distinct.
Sample Input 0
5
2 3 6 6 5
Sample Output 0
5
Explanation 0
Given the array nums = [2, 3, 6, 6, 5], we see that the largest value in the array is 6 and the second largest value is 5. Thus, we return 5 as our answer.
Solution – Day 3: Arrays
'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++];
}
/**
* Return the second largest number in the array.
* @param {Number[]} nums - An array of numbers.
* @return {Number} The second largest number in the array.
**/
function getSecondLargest(nums) {
// Complete the function
var sArray = nums.sort(function (a,b){
return a - b;
});
var uSarray = sArray.filter(function (elm, index, self){
return index == self.indexOf(elm);
});
return uSarray[uSarray.length - 2];
}
function main() {
const n = +(readLine());
const nums = readLine().split(' ').map(Number);
console.log(getSecondLargest(nums));
}