题解 | #整数中1出现的次数#
整数中1出现的次数（从1到n整数中1出现的次数）
https://www.nowcoder.com/practice/bd7f978302044eee894445e244c7eee6
import java.util.*;
public class Solution {
public int NumberOf1Between1AndN_Solution1(int n) {
int count=0;
for(int cursor=0;cursor<=n;cursor++){
int tmp=cursor;
while(tmp!=0){
if(tmp%10==1){
count++;
}
tmp/=10;
}
}
return count;
}
public int NumberOf1Between1AndN_Solution(int n){
int count=0;
for(int cursor=0;cursor<=n;cursor++){
String tmp=String.valueOf(cursor);
char[] chars=tmp.toCharArray();
for(char c:chars){
if(c=='1')
count++;
}
}
return count;
}
}
