Java解题练习
Java解题练习
1.A+B问题
??解题代码:
import java.util.*;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner in = new Scanner(System.in);
while(in.hasNext()) {//关于hasnext这个方法我可能是没有学过,这个方法有什么意义?
int a = in.nextInt();
int b = in.nextInt();
System.out.println(a+b);
}
}
}
2.控制数量的A+B问题
??解题代码:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner in = new Scanner(System.in);
int rownum = in.nextInt();
int[] ret = new int[rownum];
for(int i = 0;i
3.控制终止的A+B问题
??解题代码:
import java.util.Scanner;
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner in = new Scanner(System.in);
LinkedList arr = new LinkedList();
int a = 1,b = 1;
while(true) {
a = in.nextInt();
b = in.nextInt();
if(a==0&&b==0) {
break;
}
arr.add(a+b);
}
for(int i:arr) {
System.out.println(i);
}
}
}
4.一个自己做的
import java.util.Scanner;
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
LinkedList ls = new LinkedList();
while(true) {
int arr = 0;
Scanner scanner = new Scanner(System.in);
String s = scanner.nextLine();
Scanner sc = new Scanner(s);
while(sc.hasNext()) {
arr+=sc.nextInt();
}
if(arr==0) {
break;
}
ls.add(arr);
}
for(int i:ls) {
System.out.println(i);
}
}
}
5.限制每行长度的多行A+B+C问题
??解题代码:
import java.util.Scanner;
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
LinkedList ls = new LinkedList();
while(true) {
int leng = sc.nextInt();
if(leng==0) {
break;
}
int addr = 0;
for(int i = 0;i
6.有次数限制的A+B+C问题
??解题代码:
import java.util.Scanner;
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
LinkedList ls = new LinkedList();
int time = sc.nextInt();
for(int j=0;j
7.我不太理解的hasnext版本的但是做出来的A+B+C问题
??解题代码:
import java.util.Scanner;
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
LinkedList ls = new LinkedList();
while(sc.hasNext()) {
int leng = sc.nextInt();
int addr = 0;
for(int i = 0;i
8.每行后边接一个空行输出的A+B问题
??解题代码:
import java.util.Scanner;
import java.util.LinkedList;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
while(sc.hasNext()) {
int sum = sc.nextInt()+sc.nextInt();
System.out.println(sum);
System.out.println();
}
}
}