[AtCode 4104] Small and Large Integers
作者:互联网
题目链接:https://abc093.contest.atcoder.jp/tasks/abc093_b?lang=en
这个题虽然很水,但是还是很容易踩坑,比如我,直接想到了[b,a]之间的长度和k的比较,其实不对,用介于(k+2k)/2之间的数验证一下就不对,考虑到对称性,应该是和2k进行比较。
做题还是应该沉心静气,不可眼高手低。
AC代码:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
long a = scanner.nextLong();
long b = scanner.nextLong();
long k = scanner.nextLong();
if(b-a+1 <= 2*k) {
for(long i = a;i <= b;i++) {
System.out.println(i);
}
} else {
long i,j;
for(i = a;i < k+a;i++) {
System.out.println(i);
}
for(j = b-k+1;j <= b;j++) {
System.out.println(j);
}
}
}
}
//这是错误代码:
//用数据 4 7 3验证即可知道结果不对
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
long a = scanner.nextLong();
long b = scanner.nextLong();
long k = scanner.nextLong();
if(b-a+1 <= k) {
for(long i = a;i <= b;i++) {
System.out.println(i);
}
} else {
long i,j;
for(i = a;i < k+a;i++) {
System.out.println(i);
}
for(j = b-k+1;j <b;j++) {
if(j == i-1)
continue;
System.out.println(j);
}
System.out.print(b);
}
}
}
标签:scanner,nextLong,long,System,Large,Small,AtCode,public,Scanner 来源: https://www.cnblogs.com/youpeng/p/10545310.html