23 lines
637 B
Java
23 lines
637 B
Java
|
package LanQiaoOJ;
|
|||
|
|
/*
|
|||
|
|
* С<EFBFBD><EFBFBD>ҪΪһ<EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD>ס<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƺš<EFBFBD>
|
|||
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2020 λס<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƺŴ<EFBFBD> 1 <EFBFBD><EFBFBD> 2020 <EFBFBD><EFBFBD><EFBFBD>š<EFBFBD>
|
|||
|
|
С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0 <EFBFBD><EFBFBD> 9 <EFBFBD>⼸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>ճ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD>
|
|||
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1017 <EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ճ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>1<EFBFBD><EFBFBD>0<EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>7<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ
|
|||
|
|
1 <EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD> 0<EFBFBD><EFBFBD>2 <EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD> 1<EFBFBD><EFBFBD>1 <EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD> 7
|
|||
|
|
<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD> 1 <EFBFBD><EFBFBD> 2020 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƣ<EFBFBD><EFBFBD>ܹ<EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD>ٸ<EFBFBD><EFBFBD>ַ<EFBFBD> 2<EFBFBD><EFBFBD>*/
|
|||
|
|
public class <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> {
|
|||
|
|
public static void main(String[] args) {
|
|||
|
|
int count=0;
|
|||
|
|
for(int i=1;i<=2020;i++) {
|
|||
|
|
String numStr=Integer.toString(i);
|
|||
|
|
|
|||
|
|
for(int j=0;j<numStr.length();j++) {
|
|||
|
|
if(numStr.charAt(j)=='2')
|
|||
|
|
count++;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
System.out.print(count);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|