import java.util.Scanner;
import java.math.*;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
char[] a = new char[32];
String str = new String();
str = scan.nextLine();
for(int i = 0;i<str.length();i++)
a[i] = str.charAt(i);
int[] sum = new int[4];
for(int i = 0; i < 4; i++) //每组循环
{
for(int j = 7; j >= 0;j--) //每个组内元素循环
{
if(a[8*i+j]=='1') //如果是1,按照二进制转换为十进制方法加上2的(7-i)次幂
sum[i]=sum[i]+(int)Math.pow(2,7-j);
}
}
System.out.print(sum[0]+"."+sum[1]+"."+sum[2]+"."+sum[3]);
}
}
PTA 7-18 IP地址转换(JAVA)
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转载自blog.csdn.net/m0_47470899/article/details/109682889
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