IOS 计算密码强度

+ (BOOL) judgeRange:(NSArray*)conditionArr Password:(NSString*)password
{
    NSRange range;
    BOOL result =NO;
    
    for(int i=0; i<[conditionArr count]; i++)
    {
        range = [password rangeOfString:[conditionArr objectAtIndex:i]];
        if(range.location != NSNotFound)
        {
            result =YES;
        }
    }
    return result;
}

//条件
+ (NSString*)judgePasswordStrength:(NSString*)password
{
    NSMutableArray* resultArray = [[NSMutableArray alloc] init];
    
    
    NSArray* termArray1 = [[NSArray alloc] initWithObjects:@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"h", @"i", @"j", @"k", @"l", @"m", @"n", @"o", @"p", @"q", @"r", @"s", @"t", @"u", @"v", @"w", @"x", @"y", @"z", nil];
    NSArray* termArray2 = [[NSArray alloc] initWithObjects:@"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"0", nil];
    NSArray* termArray3 = [[NSArray alloc] initWithObjects:@"A", @"B", @"C", @"D", @"E", @"F", @"G", @"H", @"I", @"J", @"K", @"L", @"M", @"N", @"O", @"P", @"Q", @"R", @"S", @"T", @"U", @"V", @"W", @"X", @"Y", @"Z", nil];
    NSArray* termArray4 = [[NSArray alloc] initWithObjects:@"~",@"`",@"@",@"#",@"$",@"%",@"^",@"&",@"*",@"(",@")",@"-",@"_",@"+",@"=",@"{",@"}",@"[",@"]",@"|",@":",@";",@"“",@"‘",@"‘",@"<",@",",@".",@">",@"?",@"/",@"、", nil];
    
    NSString* result1 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray1 Password:password]];
    NSString* result2 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray2 Password:password]];
    NSString* result3 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray3 Password:password]];
    NSString* result4 = [NSString stringWithFormat:@"%d",[self judgeRange:termArray4 Password:password]];
    
    [resultArray addObject:[NSString stringWithFormat:@"%@",result1]];
    [resultArray addObject:[NSString stringWithFormat:@"%@",result2]];
    [resultArray addObject:[NSString stringWithFormat:@"%@",result3]];
    [resultArray addObject:[NSString stringWithFormat:@"%@",result4]];
    
    int intResult=0;
    for (int j=0; j<[resultArray count]; j++)
    {
        if ([[resultArray objectAtIndex:j] isEqualToString:@"1"])
        {
            intResult++;
        }
        
    }
    
    NSString* resultString = [[NSString alloc] init];
    if (intResult == 1)
    {
        resultString = @"密码强度低，建议修改";
    }
    
    else if (intResult == 2 && [password length]>=6 )
    {
        resultString = @"密码强度一般";
    }
    if (intResult ==3 &&[password length]>6)
    {
        resultString = @"密码强度高";
        
    }
    return resultString;
    
}