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public class Scoure { public static void main(String args[]) { int score= 90 ; if (score>= 85 && score <= 100 ) { System.out.println( "优秀" ); } else if (score>= 65 && score < 85 ) { System.out.println( "良" ); } else if (score>= 60 && score < 65 ) { System.out.println( "及格" ); } else if (score>= 0 && score < 60 ) { System.out.println( "不及格" ); } else { System.out.println( "分数不能大于100 或者小于0" ); } } } //if语句的练习 |
public class lianxi { public static void main(String args[]) { for (int i=100;i<201;i++){ boolean b=false; for (int j=2;j<i-1;j++){ int k =i%j; if (k==0){ b=true; } }if (!b){ System.out.println(i); } } } } //寻找素数100-200
结果:
public class xing { public static void main(String args[]) { for (int i=1;i<5;i++){ for (int j=0;j<4-i;j++){ System.out.print((" ")); } for (int k=0;k<i;k++){ System.out.print("* "); } System.out.println(" "); } } }
运行结果
九九乘法口诀实现
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public class suanshu { public static void main(String args[]) { for ( int i= 0 ;i< 10 ;i++){ for ( int j= 1 ;j<i+ 1 ;j++){ System.out.print(String.format( "%d*%d=%d" ,i, j,i*j)); System.out.print( " " ); } System.out.println( " " ); } } } |
结果
出 处:https://www.cnblogs.com/leiziv5/p/7891114.html