目录
题号A: A+B(1)
import java.util.Scanner; public class Main{ public static void main(String[] args) { Scanner sc = new Scanner(System.in); while(sc.hasNext()) { int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a + b); } }}题号B: A+B(2)
import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); int num = sc.nextInt(); while(num!=0){ int a = sc.nextInt(); int b = sc.nextInt(); System.out.println(a+b); num--; } }}题号C: A+B(3)
// 方法1import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); while(a!=0 && b!=0){ System.out.println(a+b); a = sc.nextInt(); b = sc.nextInt(); } }}//方法2import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner in = new Scanner(System.in); while(in.hasNextLine()){ int a = in.nextInt(); int b = in.nextInt(); if(a==0&&b==0){ break; } System.out.println(a+b); } }}题号D: A+B4)
import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNextLine()){ int num = sc.nextInt(); int sum = 0; for(int i = 0;i题号E: A+B(5)
import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); int num = sc.nextInt(); while(num-->0){ int a = sc.nextInt(); int sum = 0; for(int i = 0; i < a; i++){ sum += sc.nextInt(); } System.out.println(sum); } }}题号F: A+B(6)
import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNextInt()){ //或者使用hasNext() int num = sc.nextInt(); int sum = 0; while(num-->0){ sum += sc.nextInt(); } System.out.println(sum); } }}题号G: A+B(7)
import java.util.Scanner;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNextLine()){ int sum = 0; String[] arr = sc.nextLine().split(" "); for(String str:arr){ sum += Integer.parseInt(str); } System.out.println(sum); } }}题号H: 字符串排序（1）
import java.util.*;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); int num = sc.nextInt(); while(sc.hasNextLine()){ String[] str = sc.nextLine().split(" "); Arrays.sort(str); for(int i = 0;i < str.length-1; i++){ System.out.print(str[i] + ' '); } System.out.print(str[str.length-1]); } }}题号I 字符串排序（2）
//方法1import java.util.*;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNextLine()){ String[] str = sc.nextLine().split(" "); Arrays.sort(str); print(str); System.out.println(); } } public static void print(String[] str){ for(int i = 0;i < str.length;i++){ String output = (i == (str.length-1)) ? str[i] : str[i]+' '; System.out.print(output); } }}//方法2import java.util.*;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNextLine()){ String[] str = sc.nextLine().split(" "); Arrays.sort(str); StringBuffer sb = new StringBuffer(); for(String s:str){ sb.append(s).append(" "); } System.out.println(sb.substring(0,sb.length()-1)); //去掉最后一个空格} }}题号G: 字符串排序（3）
//方法1import java.util.*;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNextLine()){ String[] str = sc.nextLine().split(","); Arrays.sort(str); print(str); System.out.println(); } } public static void print(String[] str){ for(int i = 0;i < str.length;i++){ String output = (i == (str.length-1)) ? str[i] : str[i]+','; System.out.print(output); } }}//方法2import java.util.*;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); while(sc.hasNext()){ String[] str = sc.nextLine().split(","); Arrays.sort(str); StringBuilder sb = new StringBuilder(); for(String s:str){ sb.append(s).append(","); } System.out.println(sb.deleteCharAt(sb.length()-1).toString());//去掉最后一个分号 } }}题目K: 自测本地通过提交为0
注意：取值范围是（0,2X10^10），最大值会超过Integer的范围。
import java.util.*;public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); //注意取值范围，用什么样的容器接数据 while(sc.hasNextLong()){ Long a = sc.nextLong(); Long b = sc.nextLong(); System.out.println(a+b); } }}练习链接：牛客竞赛_ACM/NOI/CSP/CCPC/ICPC算法编程高难度练习赛_牛客竞赛OJ (nowcoder.com)
来源地址：https://blog.csdn.net/qq_41855453/article/details/131542412
