Java方法

1.C
2.B
3.D
4.C
5.B
6.AC
7.A
8.D
9.B
10.D
代码：
1.

public class sxa2 {
	public void fun(double m){
		if(m<100){
			m=m;
		}else if(m<200 & m>=100){
			m=m*0.95;
		}else if(m>=200){
			m=m*0.85;
		}
		System.out.println(m);
	}
	public static void main(String[] args){
		double m=150;
		sxa2 fun=new sxa2();
		fun.fun(m);
	}		
}

public class sxa2 {
	public static void fun(float[] a){
		float b=0;
		for(float i:a){
			b=i/a.length+b;
		}
		System.out.println(b);
	}
	public static void main(String[] args){
		float[] arr={1,2,3,4,5,6};
		fun(arr);
	}		
}

public class sxa2 {
	public static void fun(double a){
		double area;
		area=a*a*3.14;
		System.out.println(area);
	}
	public static void fun(double n,double m){
		double area;
		area=n*m;
		System.out.println(area);
	}
	public static void main(String[] args){
		double r=4;
		double l=4,h=6;
		fun(r);
		fun(l,h);
	}		
}