Sorting NSMutableArray

  NSMutableArray *myColors = [NSMutableArray arrayWithObjects: @"red", @"green", @"blue", @"yellow", nil];

    

    NSArray *sortedArray;

    

    sortedArray = [myColors sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];

    

    myColors = [NSMutableArray arrayWithArray:sortedArray];