objective-c - 对数字进行排序 Objective-C

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我想制作一个演示应用程序，我可以在代码中输入 4 个数字，然后按 1,2,3 顺序对其进行排序，然后 NSLog对我来说。有简单的算法或方法吗？

Answer 1

// Put code in your App's ViewController
@implementation Sorting_NumbersViewController

- (void)viewDidLoad 
{

[super viewDidLoad];

// CODE STARTS HERE
  // This allocates and initializes the NSMutableArray
  NSMutableArray *anArray = [[NSMutableArray alloc] init];

  // These are where you enter your numbers
  [anArray addObject:@"1"];
  [anArray addObject:@"3"];
  [anArray addObject:@"2"];

  //This looks looks at the objects above and compares them with each-other
  NSArray *sorted = [anArray sortedArrayUsingSelector:@selector(compare:)];

  //This spits the result out in the console
  NSLog(@"Ordered Numbers: %@", sorted);  

}