9x9乘法表
class Demo { public static void main(String[] args) { for(int x = 0;x <= 9; x++) { for(int y = 1;y <= x; y++) { System.out.print(y+"*"+x+"="+x*y+"\t"); } System.out.println(); } } }
冒泡排序
public class BubbleSort{ public static void main(String[] args){ int score[] = {67, 69, 75, 87, 89, 90, 99, 100}; for (int i = 0; i < score.length -1; i++){//最多做n-1趟排序 for(int j = 0 ;j < score.length - i - 1; j++){//对当前无序区间score[0......length-i-1]进行排序(j的范围很关键,这个范围是在逐步缩小的) if(score[j] < score[j + 1]){ //把小的值交换到后面 int temp = score[j]; score[j] = score[j + 1]; score[j + 1] = temp; } } System.out.print("第" + (i + 1) + "次排序结果:"); for(int a = 0; a < score.length; a++){ System.out.print(score[a] + "\t"); } System.out.println(""); } System.out.print("最终排序结果:"); for(int a = 0; a < score.length; a++){ System.out.print(score[a] + "\t"); } } }
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