Cappuccino~~~
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TestString
public class TestString
{
    public static void main(String[] args)
    {
        //求该字符串包含多少个java子字符串
        String s1 = "java,java_sunjavaworld,i love java,ha,6iy%$javaw87%^sn2^*java";
        int num = gen(s1,"java");
        System.out.println("s1字符串一共包含"+num+"个子串");
        

        //求该字符串中包含多少个大写字符、小写字符、数字、其他字符
        String s2 = "hdHoinlG&dd3NZW3OIN2,dsou5WE.!72Hsn__@#m";
        fun1(s2); //查找方法1
        fun2(s2); //查找方法2
        fun3(s2); //查找方法3
    }
    public static int gen(String str,String key)
    {
        String s = str;
        int count = 0;
        int position = 0;

        while( (position = s.indexOf(key)) != -1)
        {
            count++;
            s = s.substring(position+key.length());
        }
        return count;
    }
    public static void fun1(String s)
    {
        int uCase = 0;
        int lCase = 0;
        int nCase = 0;
        int oCase = 0;

        for (int i = 0;i < s.length();i++)
        {
            char c = s.charAt(i);
            if (c >= 'A' && c <= 'Z')
            {
                uCase++;
            }else if (c >= 'a' && c <= 'z')
            {
                lCase++;
            }
            else if (c >= '0' && c <= '9')
            {
                nCase++;
            }
            else
            {
                oCase++;
            }
        }
        System.out.println("fun1.大写字符："+uCase+" 小写字符："+lCase+" 数字"+nCase+" 其他字符："+oCase+" 总计："+s.length());
    }
    public static void fun2(String s)
    {
        int uCase = 0;
        int lCase = 0;
        int nCase = 0;
        int oCase = 0;

        String uS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String lS = "abcdefghijklmnopqrstuvwxyz";
        String nS = "0123456789";

        for (int i=0;i<s.length();i++)
        {
            char c = s.charAt(i);
            if (uS.indexOf(c) != -1)
            {
                uCase++;
            }else if (lS.indexOf(c) != -1)
            {
                lCase++;
            }else if (nS.indexOf(c) != -1)
            {
                nCase++;
            }
            else
            {
                oCase++;
            }
        }
        System.out.println("fun2.大写字符："+uCase+" 小写字符："+lCase+" 数字"+nCase+" 其他字符："+oCase+" 总计："+s.length());
    }
    public static void fun3(String s)
    {
        int uCase = 0;
        int lCase = 0;
        int nCase = 0;
        int oCase = 0;

        for (int i=0;i<s.length();i++)
        {
            char c =  s.charAt(i);
            if (Character.isUpperCase(c))
            {
                uCase++;
            }else if (Character.isLowerCase(c))
            {
                lCase++;
            }else if (Character.isDigit(c))
            {
                nCase++;
            }else
            {
                oCase++;
            }
        }
        System.out.println("fun3.大写字符："+uCase+" 小写字符："+lCase+" 数字"+nCase+" 其他字符："+oCase+" 总计："+s.length());
    }
}
//s1字符串一共包含6个子串
//fun1.大写字符：11 小写字符：15 数字6 其他字符：8 总计：40
//fun2.大写字符：11 小写字符：15 数字6 其他字符：8 总计：40
//fun3.大写字符：11 小写字符：15 数字6 其他字符：8 总计：40
posted on 2008-02-12 21:41 菜园小鸟 阅读(220) 评论(0)  编辑  收藏

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