iphone 数组的正序、反序输出。

iphone数组的正序、反序输出：

	NSArray * array = [NSArray arrayWithObjects:@"wang", @"zhou", @"xiaozhou", nil];
	
	//正序输出
	for (NSString * str  in array) {
		NSLog(@"%@", str);
	}
	//反序输出
	for (NSString * str  in [array reverseObjectEnumerator]) {
		NSLog(@"%@", str);
	}

输出内容：

2012-05-14 22:27:18.838 TestApp[459:207] wang

2012-05-14 22:27:18.839 TestApp[459:207] zhou

2012-05-14 22:27:18.844 TestApp[459:207] xiaozhou

2012-05-14 22:27:18.846 TestApp[459:207] xiaozhou

2012-05-14 22:27:18.847 TestApp[459:207] zhou

2012-05-14 22:27:18.849 TestApp[459:207] wang