public class firstNonRepeatedChar {        
        private    static final int MAX_CHAR = 256;            
                
        public static void main(String[] args) {        
                String str = "total";        
                firstNoRepeatedChar(str);        
        }        
    
        public static int firstNoRepeatedChar(String str) {        
                 int i = 0;            
                 int j = 0;            
                 int[] p = new int[MAX_CHAR];        
                 char[] chars = str.toCharArray();        
                 //初始化数组p，p用于保存字符出现的次数                    
                 for (j = 0; j < MAX_CHAR; j++) {            
                    p[j] = 0;            
                 }        
                        
                 //统计字符出现的次数                
                 for(i=0;i<chars.length;i++){        
                         p[chars[i]]++;        
                 }        
    
                 //寻找第一个统计次数为1的字符        
                 for (i = 0; chars[i] != -1; i++) {            
                            if (p[chars[i]] == 1) {            
                             System.out.println(chars[i]);        
                             return 1;            
                            }            
                         }            
                return 0;        
                        
        }        
}