字符串统计

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 64638    Accepted Submission(s): 
35369

import java.util.*;
class Main{
public static void main(String args[])
{Scanner cin=new Scanner(System.in);
int n=cin.nextInt();
while(n-->0)
{String sr=cin.next();
    char []s=sr.toCharArray();
    int sum=0;
for(int i=0;i<s.length;i++)
{if(s[i]>=‘0‘&&s[i]<=‘9‘)
    {sum++;
        }
}
System.out.println(sum);
}
}
}

怎样把字符串转化成字符数组使用toCharArray进行转化；

HDU2017JAVA

原文：http://www.cnblogs.com/1314wamm/p/5296300.html