ZZULIOJ JAVA T1010-T1019_zzuli oj java 1010-优快云博客

本文提供了多个Java编程实例，涵盖圆的周长面积计算、矩形表面积计算、绝对值计算、两点间距离计算、三角形面积计算、时间差计算、复利计算、数字位数计算、奇偶判断、费用计算等，适合初学者实践。

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ZZULIOJ JAVA T1010-T1019

T1010

import java.util.Scanner;

public class T1010 {
	

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		final double PI = 3.1415;
		
		double a;
		
		Scanner in = new Scanner(System.in);
		
		a = in.nextDouble();
		
		
		System.out.printf("%.2f %.2f",2*PI*a,PI*a*a);

		in.close();
	}

}

T1011

import java.util.Scanner;

public class T1011 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
        final double PI = 3.14159;
		
		double a ,b;
		
		Scanner in = new Scanner(System.in);
		
		a = in.nextDouble();
		b = in.nextDouble();
		
		
		System.out.printf("%.2f",2*PI*a*b+2*PI*a*a);

		in.close();

	}

}

T1012

import java.util.Scanner;

public class T1012 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		double a;
		Scanner in = new Scanner(System.in);
		
		a = in.nextDouble();
		
		double b = Math.abs(a);
		
		System.out.printf("%.2f", b);
		
		
		in.close();

	}

}

T1013

import java.util.Scanner;

public class T1013 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		double x1, x2, y1, y2;
		Scanner in = new Scanner(System.in);
		x1 = in.nextDouble();
		y1 = in.nextDouble();
		x2 = in.nextDouble();
		y2 = in.nextDouble();
		in.close();
		double x;
		x = Math.pow(x1-x2, 2) + Math.pow(y1-y2, 2);
		double j = Math.sqrt(x);
		System.out.printf("%.2f",j);
		
		

	}

}

T1014

import java.util.Scanner;

public class T1014 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		double a,b,c;
		Scanner in = new Scanner(System.in);
		a = in.nextDouble();
		b = in.nextDouble();
		c = in.nextDouble();
		in.close();
		double p;
		p = (a+b+c)/2;
		double area;
		area = Math.sqrt(p*(p-a)*(p-b)*(p-c));
		System.out.printf("%.2f", area);

	}

}

T1015

import java.util.Scanner;

public class T1015 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		Scanner in = new Scanner(System.in);
		String t1 = in.nextLine();
		String t2 = in.nextLine();
		in.close();
		char a[] = t1.toCharArray();
		char b[] = t2.toCharArray();
		int s1 = (a[0]*10*3600+a[1]*3600+a[3]*10*60+a[4]*60+a[6]*10+a[7]);
		int s2 = (b[0]*10*3600+b[1]*3600+b[3]*10*60+b[4]*60+b[6]*10+b[7]);
		if (s2>s1) {
			System.out.println(s2-s1);
		}
	}

}

T1016

import java.util.Scanner;

public class T1016 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		double ir = 0.0225;
		Scanner in = new Scanner(System.in);
		int year = in.nextInt();
		double deposit = in.nextDouble();
		in.close();
		double s = 0;
		
		for (int i=year; i>0;i--) {
			s = deposit*ir;
			deposit= deposit+s;
		}
		System.out.printf("%.6f",deposit);

	}

}

T1017

import java.util.Scanner;

public class T1017 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int a;
		Scanner in = new Scanner(System.in);
		a = in.nextInt();
		in.close();
		int n=0;
		for (int i =a;i>0;i/=10) {
			n++;
		}
		System.out.println(n);

	}

}

T1018

import java.util.Scanner;

public class T1018 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int a;
		Scanner in = new Scanner(System.in);
		a = in.nextInt();
		in.close();
		if(a%2==0) {
			System.out.println("even");
		}else {
			System.out.println("odd");
		}
	}

}

T1019

import java.util.Scanner;

public class T1019 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int n;
		Scanner in = new Scanner(System.in);
		n = in.nextInt();
		in.close();
		if(n<30) {
			System.out.println(n*50);
		}else {
			System.out.println(n*48);
		}

	}

}