NSMutableArray * array = [[NSMutableArray alloc] init];
[array addObject:@"123"];
[array addObject:@"456"];
[array addObject:@"789"];
[array addObject:@"asd"];
NSString * Str = [NSString stringWithFormat:@""];
for (int i = 0; i < [array count] ; i ++ ) {
Str = [Str stringByAppendingString:[array objectAtIndex:i]];
}
NSLog(@"%@",Str);
[array release];