依据输入的内容打印出菱形

/*
 5 依据输入的内容打印出菱形
 */

+(void)print:(NSInteger)count blankString:(NSString*)blankString flagString:(NSString*)flagString
/*
{
    NSMutableString * ptr = [[NSMutableString alloc]init];
    for (NSInteger i = 0; i < count; i++) {
        for (NSInteger j = 0; j < count; j++) {
            if (abs((int)(i-count/2))+abs((int)(j - count/2))==count/2) {
                [ptr appendString:flagString];
            }
            else
            {
                [ptr appendString:blankString];
            }
        }
        [ptr appendString:@"\n"];
    }
    NSLog(@"\n%@",ptr);
}
*/

{
    NSMutableString * ptr = [[NSMutableString alloc]init];
    for (NSInteger i = 0; i < count; i++) {
        for (NSInteger j = 0; j < count; j++) {
            if (abs((int)(i - count/2))+abs((int)(j - count/2))==count/2) {
                [ptr appendString:flagString];
            }
            else
            {
            [ptr appendString:blankString];
            }
        }
        [ptr appendString:@"\n"];
    }
    NSLog(@"\n%@",ptr);
}
//count 表示正方形边长

//flagString 组成菱形的边

//blankString 组成背景正方形

//比方 [class print:5 blankString:@“+”flagString:@“#”];
/*
 + + # + +
 
 + # + # +
 
 # + + + #
 
 + # + # +
 
 + + # + +
 */
/*