[HackerRank] Simple Array Sum | A Very Big Sum

harriszh 发布于2019-08-14 15:47 / 2857人阅读

Simple Array Sum

Problem

Given an array of N integers, can you find the sum of its elements?

Input Format

The first line contains an integer, N, denoting the size of the array.
The second line contains N space-separated integers representing the array"s elements.

Output Format

Print the sum of the array"s elements as a single integer.

Sample Input

</>复制代码 
6
1 2 3 4 10 11

Sample Output

</>复制代码 
31

Solution

</>复制代码 
import java.io.*;
import java.util.*;
public class Solution {
    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner sc = new Scanner(System.in);
        int size = sc.nextInt();        
        int sum = 0;
        while(sc.hasNextInt()){          
            sum += sc.nextInt();
        }
        System.out.print(sum);
    }
}

A Very Big Sum

Solution

</>复制代码 
import java.io.*;
import java.util.*;
public class Solution {
    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner sc = new Scanner(System.in);
        int size = sc.nextInt();        
        long sum = 0;
        while(sc.hasNextInt()){          
            sum += (long)sc.nextInt();
        }
        System.out.print(sum);
    }
}

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