//
//  ArraryTest_OrderViewController.m
//  ArraryTest_Order
//
//  Created by lv wei on 13-4-27.
//  Copyright (c) 2013年 lv wei. All rights reserved.
//

#import "ArraryTest_OrderViewController.h"

@interface QStudent : NSObject

@property(nonatomic, retain) NSString* studentID;

-(NSComparisonResult) compare: (id)element;

@end

@implementation QStudent
@synthesize studentID = _studentID;

- (void)dealloc
{
    [_studentID release];
    [super dealloc];
}
//主要用来演示NSMutableArray的sortUsingSelector如何使用
- (NSComparisonResult)compare:(QStudent*)element
{
    int num1 = [_studentID intValue];
    int num2 = [element.studentID intValue];

    if (num1 == num2) {
        return NSOrderedSame;
    }
    else if (num1 < num2)
    {
        return NSOrderedAscending;
    }

    return NSOrderedDescending;
}

@end


@interface ArraryTest_OrderViewController ()
@property(nonatomic, retain)NSMutableArray* stringList;
@end

@implementation ArraryTest_OrderViewController
@synthesize stringList = _stringList;


- (void)viewDidLoad
{
    [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.

    NSMutableArray* stringList = [NSMutableArray arrayWithObjects:@"90", @"23",@"1",@"1000",@"0",@"99",nil];
    self.stringList = stringList;

    [self sortUsingComparator];
    [self sortComparatorWithOptions];
    [self sortUsingFuction];
    [self sortUsingSelector];
}

- (void)sortUsingComparator
{
    NSLog(@"sortUsingComparator");
    NSMutableArray* stringList = [_stringList mutableCopy];

    NSLog(@"原始的：%@",stringList);

    [stringList sortUsingComparator:^NSComparisonResult(id obj1, id obj2) {

        if ([obj1 intValue] == [obj2 intValue]) {
            return NSOrderedSame;
        }
        else if([obj1 intValue] > [obj2 intValue] )
        {
            return NSOrderedDescending;
        }

        return NSOrderedAscending;
    }];

    NSLog(@"排序后:%@",stringList);

    [stringList release];
}

- (void)sortComparatorWithOptions
{
     NSLog(@"sortComparatorWithOptions");
    NSMutableArray* stringList = [_stringList mutableCopy];

    NSLog(@"原始的：%@",stringList);

    [stringList sortWithOptions:NSSortStable usingComparator:^NSComparisonResult(id obj1, id obj2) {

        if ([obj1 intValue] == [obj2 intValue]) {
            return NSOrderedSame;
        }
        else if([obj1 intValue] > [obj2 intValue] )
        {
            return NSOrderedDescending;
        }

        return NSOrderedAscending;
    }];



    NSLog(@"排序后:%@",stringList);

    [stringList release];
}

static NSComparisonResult ObjectCompare(id  obj1, id obj2, void* context)
{
    if ([obj1 intValue] == [obj2 intValue]) {
        return NSOrderedSame;
    }
    else if([obj1 intValue] > [obj2 intValue] )
    {
        return NSOrderedDescending;
    }

    return NSOrderedAscending;
}

- (void)sortUsingFuction
{
    NSLog(@"sortUsingFuction");
    NSMutableArray* stringList = [_stringList mutableCopy];

    NSLog(@"原始的：%@",stringList);

    [stringList sortUsingFunction:ObjectCompare context:nil];

    NSLog(@"排序后:%@",stringList);

    [stringList release];
}

- (void)sortUsingSelector
{
    NSLog(@"sortUsingSelector");
    const int KArrayLen = 6;
    int array[KArrayLen] = {90,23,1,1000,0,99};
    NSMutableArray* stringList = [[NSMutableArray alloc] init];

    for (int i = 0; i < KArrayLen; ++i) {
        QStudent* student = [[QStudent alloc] init];
        student.studentID = [NSString stringWithFormat:@"%d",array[i]];
        [stringList addObject:student];
        [student release];
    }


    NSLog(@"原始的：");
    for (int i = 0; i < KArrayLen; ++i) {

        NSLog(@"%@",[[stringList objectAtIndex:i] studentID]);
    }

    [stringList sortUsingSelector:@selector(compare:)];

    NSLog(@"排序后:");

    for (int i = 0; i < KArrayLen; ++i) {

        NSLog(@"%@",[[stringList objectAtIndex:i] studentID]);
    }
    NSLog(@"反序后:");
    NSEnumerator *enumerator = [stringList reverseObjectEnumerator];
    [stringList release];
  stringList =[[NSMutableArray alloc]initWithArray: [enumerator allObjects]];

    for (int i = 0; i < KArrayLen; ++i) {

        NSLog(@"%@",[[stringList objectAtIndex:i] studentID]);
    }
    [stringList release];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end