java函数(方法)练习： A:求两个数据之和 B:判断两个数据是否相等 C:获取两个数中较大的值 D:打印m行n列的星形矩形 E:打印nn乘法表
A:程序如下： package function;
import java.util.Scanner;
public class Sum {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("数据1:");
int x=sc.nextInt();
System.out.println("数据2:");
int y=sc.nextInt();
//System.out.println(sum (x,y));
sum(x,y);
}
public static int sum(int a,int b) {
int sum=a+b;
System.out.println("两数之和:"+sum);
return sum;
}
}
B:程序如下： package function;
import java.util.Scanner;
public class Boolean { public static void main(String[] args) { Scanner sc= new Scanner(System.in); System.out.println("数据1:"); int x=sc.nextInt(); System.out.println("数据2:"); int y=sc.nextInt(); boolean flag=xiangDeng(x,y); System.out.println("输入两数据是否相等:"+flag); } public static boolean xiangDeng(int a,int b){ return (a==b)?true:false; } }
C:程序如下： package function;
import java.util.Scanner;
public class Max { public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("请输入数据一:"); int x=sc.nextInt(); System.out.println("请输入数据一:"); int y=sc.nextInt(); System.out.println("最大值为:"); System.out.println(max(x,y)); } public static int max(int a,int b){ int c=(a>b)?a:b; return c; }
}
D:程序如下： package function;
import java.util.Scanner;
public class Xing { public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("请输入行数:"); int x=sc.nextInt(); System.out.println("请输入列数:"); int y=sc.nextInt(); System.out.println("输出结果:"); xing(x,y); } public static void xing(int a,int b){ for(int i=0;i<=a;i++) { for(int j=0;j<=b;j++) { System.out.print("*"); } System.out.println(); } } }
E:程序如下： package function;
import java.util.Scanner;
public class Chenfa { public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("请输入行数:"); int x=sc.nextInt(); chenfa(x); } public static void chenfa(int a){ for(int i=1;i<=a;i++) { for(int j=1;j<=i;j++) { System.out.print(j+""+i+"="+ij+'\t'); } System.out.println(); } }
}
