java - 对数组中大于输入值的数字求和

Question

需要将数组中大于输入数字的所有数字相加。种子只是为了可以复制输出。

示例:

[12,16,45,3,32]

输入值:30

输出:

77

import java.util.*;

    public class SumAbove {
        public static void main(String[] args) {
            Scanner scnr = new Scanner(System.in);
            int seed = scnr.nextInt();
            Random rand = new Random(seed);


            System.out.println("Enter a positive integer between 1-100 to search above:");
            int minVal = scnr.nextInt();

            int[] arr = new int[rand.nextInt(100)+1];
            for (int i=0; i<arr.length; i++) {
                arr[i] = rand.nextInt(100)+1;
            }
            System.out.println(Arrays.toString(arr));


             int sum = 0;
             for (int i=0; i<arr.length; i++) {
             if (arr[i]>minVal) {
                    sum += i;
                }
             }
            System.out.println(sum);
        }
    }

Answer 1

而不是 sum += i; 你想要 sum += arr[i]; (如前所述)，你也只需要一个循环(因为你知道第一个循环之前的最小值)。就像，

int minVal = scnr.nextInt(), sum = 0;
int[] arr = new int[rand.nextInt(100) + 1];
for (int i = 0; i < arr.length; i++) {
    arr[i] = rand.nextInt(100) + 1;
    if (arr[i] > minVal) {
        sum += arr[i];
    }
}
System.out.println(Arrays.toString(arr));
System.out.println(sum);