基於多個輸入的Java百分比計算

Question

我有點困惑如何根據輸入值計算百分比（例如：選擇團隊）

Scanner input = new Scanner(System.in);

System.out.println("1 for Team one, 2 for Team two, 3 for draw, 9 for quit");

int pick = 0;

int team1 = 0;
int team2 = 0;
int draw = 0;

while (pick != 9) {
    pick = input.nextInt();

    if (pick == 1) {
        team1 += 1;
    } else if (pick == 2) {
        team2 += 1;
    } else if (pick == 3) {
        draw += 1;
    }
}

System.out.println(team1);
System.out.println(team2);
System.out.println(draw);

int total = team1 + team2 + draw;

System.out.println(total);

這將單獨打印和總計打印。 例如，如果所有值都從輸入中選取 2 次，我想打印：

“第一隊 = 33.3%，第二隊 = 33.3%，平局 = 33.3%”等等不同類型的選秀權。 謝謝

Answer 1

要獲得每個價格的百分比，您必須執行以下操作：

int persentageteam1 = team1*100/(team1+team2+team3);

其他人也一樣......

解釋：

你在這里做的是將你想要找到的價格與其他價格的總和相除，然后做這個 x100

Answer 2

你快到了。 現在，您只需要一個計數器來計算迭代次數，最后將 team1、team2 和 draw 的分數除以計數器的值，然后將它們乘以100.0以獲得百分比分數。

演示：

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        System.out.println("1 for Team one, 2 for Team two, 3 for draw, 9 for quit");

        int pick = 0;

        int team1 = 0;
        int team2 = 0;
        int draw = 0;
        int count = -1;
        while (pick != 9) {
            pick = input.nextInt();
            if (pick == 1) {
                team1 += 1;
            } else if (pick == 2) {
                team2 += 1;
            } else if (pick == 3) {
                draw += 1;
            }
            count++;
        }

        System.out.printf("Percentage score of team1: %.1f%n", (team1 * 100.0 / count));
        System.out.printf("Percentage score of team2: %.1f%n", (team2 * 100.0 / count));
        System.out.printf("Percentage score of draw: %.1f%n", (draw * 100.0 / count));
    }
}

示例運行：

1 for Team one, 2 for Team two, 3 for draw, 9 for quit
1
2
3
3
2
1
9
Percentage score of team1: 33.3
Percentage score of team2: 33.3
Percentage score of draw: 33.3

Answer 3

一個數字的百分比是根據以下原則計算的（或者至少是我學校教的）：比如說，你需要找出另一個數字的百分比，讓它是 firstNumber 和 secondNumber。 然后，firstNumber=100% 和 secondNumber=x。 由此我們得到比例：firstNumber/secondNumber = 100%/x，因此，x=(secondNumber*100)/firstNumber。 也就是說，在您的情況下， firstNumber 是所有球隊的選擇摘要，而 secondNumber - 您要確定的球隊百分比。 例如

//your code
int pickSummary=team1+team2+team3+draw;
int team1Percentage=team1*100/pickSummary;
System.out.println(team1Percentage);
//and so on