public static int countStrHeadChar(String str, char c) {
        int re = 0;
        if (!isEmpty(str))
            for (; re < str.length(); re++) {
                if (str.charAt(re) != c)
                    return re;
            }
        return re;
    }
public static int countStrHeadChar(String str, char c) {
        int re = 0;
        if (!isEmpty(str))
            for (; re < str.length(); re++) {
                if (str.charAt(re) != c)
                    return re;
            }
        return re;
    }
public static int countStrHeadChar ( String str , char c ) { int re = 0 ; if ( ! isEmpty ( str ) ) for ( ; re < str . length ( ) ; re ++ ) { if ( str . charAt ( re ) != c ) return re ; } return re ; }
计算一个字符串开头有几个重复的字符

@param str
给定字符串
@param c
指定重复字符
@return 开头重复字符的个数
计算一个字符串开头有几个重复的字符