【leetcode】“气球” 的最大数量

int maxNumberOfBalloons(char * text){
    int i=0,len=strlen(text),hash[50]={0},min=10000;
    char* s = "balon";
    for(; i<len; i++) 
        hash[text[i]-'a']++;
    for (i=0; i<5; i++)
    {
        if (s[i] == 'l' || s[i] == 'o')
            if (hash[s[i]-'a']/2 < min) min = hash[s[i]-'a']/2;
        else
            if (hash[s[i]-'a'] < min) min = hash[s[i]-'a'];    
    }
    return min;
}