技術標籤：流程控制語句陣列java陣列

文章目錄

• • if語句
  • Scanner輸入三個數
  • 陣列輸入輸出n個數

if語句

1. if語句,輸入三個數,輸出對應的最大值,最小值

public static void main(String[] args) {
		int max;
		int a = 12, b = 34, c = 20;
		if (a > b && a > c) {
			max = a;
		} else if (b > a && b > c) {
			max = b;
		} else {
			max = c;
		}
 

		System.out.printf("最大值:%d\n",max);
		
		int min;
		if (a < b && a < c) {
			min = a;
		} else if (b > a && b > c) {
			min = b;
		} else {
			min = c;
		}
		System.out.printf("最小值:%d",min);
	}

輸出結果:

Scanner輸入三個數

2. 加入Scanner,輸入三個數判斷大小並輸出最大值,最小值

public
 
 static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("輸入第一個數:");
		int a = sc.nextInt();
		System.out.println("輸入第二個數:");
		int b = sc.nextInt();
		System.out.println("輸入第三個數:");
		int c = sc.nextInt();

		int max = a > b ? a :
 
 b;
		max = max > c ? max : c;
		System.out.printf("三個數中最大值:%d\n", max);

		int min = a < b ? a : b;
		min = min < c ? min : c;
		System.out.printf("三個數中最小值:%d", min);

	}

輸出結果:

陣列輸入輸出n個數

3. 從鍵盤輸入n個數,輸出這n個數的最大值,最小值

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("請輸入所需整數的個數:");
		int n = sc.nextInt();
		int[] a = new int[n];
		for (int i = 0; i < n; i++) {
			a[i] = sc.nextInt();
		}
		int max = a[0];
		int min = a[0];
		for (int i = 0; i < n; i++) {
			if (max < a[i]) {
				max = a[i];
			}
			if (min > a[i]) {
				min = a[i];
			}
		}
		System.out.printf("最大值:%d\n", max);
		System.out.printf("最小值:%d", min);
	}