java每日小算法（7）

/*【程序7】
题目：输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。
1.程序分析：利用while语句,条件为输入的字符不为'\n'.  */
package test;
import java.util.ArrayList;
import java.util.List;
public class test {
public static List<Integer> countstr(String input) {
List<Integer> result = new ArrayList<Integer>();
int number = 0;
int letter = 0;
int blank = 0;
int other = 0;
for(int i = 0; i<input.length(); i++)
{
if(input.charAt(i)>='0' && input.charAt(i)<='9')
number++;
else if(input.charAt(i)>='a' && input.charAt(i)<='z')
letter++;
else if(input.charAt(i)>='A' && input.charAt(i)<='Z')
letter++;
else if(input.charAt(i) == ' ')
blank++;
else
other++;
}
result.add(number);
result.add(letter);
result.add(blank);
result.add(other);
return result;
}

public static void main(String[] args) {
long a = System.currentTimeMillis();
String input = "234jkadbnERFGfq3 98G45nr2EG49 r85^&ERweuf34jn#$%tq8 9wfXCVu34#$%nr818371!@#2";
List<String> strname = new ArrayList<String>();
strname.add("number");
strname.add("letter");
strname.add("blank");
strname.add("other");
for(int i = 0; i < countstr(input).size(); i++)
System.out.println("The count of "+strname.get(i)+" in this string is "+countstr(input).get(i));
System.out.println(System.currentTimeMillis() - a);
}
}

The count of number in this string is 26
The count of letter in this string is 36
The count of blank in this string is 3
The count of other in this string is 11
3