NSArray中排序的种类

//
//  main.m
//  NSArray的排序
//
//  Created by ganchaobo on 13-4-28.
//  Copyright (c) 2013年 ganchaobo. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Student.h"
#import "MyStudent.h"

void SimpleNSArraySort(){
    NSArray *arr=[NSArray arrayWithObjects:@"3",@"1",@"2", nil];
    //NSArray中每个对象比较的时候，都是调用对象的compare进行比较
    //用制定方法比较
 NSArray  *sortArray=   [arr sortedArrayUsingSelector:@selector(compare:)];
    NSLog(@"%@",arr);
    NSLog(@"======");
    NSLog(@"%@",sortArray);    
    
}

void ModelNArraySort(){
    //数组里面要比较的对象，必须有一个方法返回compareRestult
    Student *s1=[Student StudentWithName:@"wen" AndLastName:@"li"];
    Student *s2=[Student StudentWithName:@"xen" AndLastName:@"Li"];
    Student *s3=[Student StudentWithName:@"xen" AndLastName:@"z"];
    NSArray *arr=[NSArray arrayWithObjects:s1,s2,s3, nil];
    NSArray *sortArry=[arr sortedArrayUsingSelector:@selector(CompareStudent:)];//每个对象的比较方法
    NSLog(@"%@" ,sortArry);

    
}
void BlockNSArraySort(){
    Student *s1=[Student StudentWithName:@"wen" AndLastName:@"li"];
    Student *s2=[Student StudentWithName:@"xen" AndLastName:@"Li"];
    Student *s3=[Student StudentWithName:@"xen" AndLastName:@"z"];
    NSArray *arr=[NSArray arrayWithObjects:s1,s2,s3, nil];
    //NSArray *sortArry=[arr sortedArrayUsingSelector:@selector(CompareStudent:)];//每个对象的比较方法
    //用block <#^NSComparisonResult(id obj1, id obj2)cmptr#>
    NSArray *sortArry=[arr sortedArrayUsingComparator:^NSComparisonResult(Student *stu1 ,Student *stu2){
        NSComparisonResult result=[stu1.LastName compare:stu2.LastName options:NSCaseInsensitiveSearch];
        if(NSOrderedSame==result){
            result=[stu1.Name compare:stu2.Name options:NSCaseInsensitiveSearch];
        }
        return result;
    }];
    NSLog(@"%@" ,sortArry);

}

void MoreModelNSArraySort(){
    Student *s1=[Student StudentWithName:@"wen" AndLastName:@"li" AndBookName:@"Book1"];
    Student *s2=[Student StudentWithName:@"xen" AndLastName:@"Li" AndBookName:@"Book1"];
    Student *s3=[Student StudentWithName:@"xen" AndLastName:@"B" AndBookName:@"Book2"];
     NSArray *arr=[NSArray arrayWithObjects:s1,s2,s3, nil];
    NSSortDescriptor *BookDescript=[NSSortDescriptor sortDescriptorWithKey:@"bk.BookName" ascending:YES];
    NSSortDescriptor *LastNameDescript=[NSSortDescriptor sortDescriptorWithKey:@"LastName" ascending:YES];
    NSSortDescriptor *NameDescirpt=[NSSortDescriptor sortDescriptorWithKey:@"Name" ascending:YES];
    NSArray *arr1=[NSArray arrayWithObjects:BookDescript,LastNameDescript,NameDescirpt, nil];
    NSArray *sortArry=[arr sortedArrayUsingDescriptors:arr1];//调用对象的copare方法，没有指定block
    NSLog(@"%@",sortArry);
    
}

int main(int argc, const char * argv[])
{

    @autoreleasepool {
        
        //MoreModelNSArraySort();
        MyStudent *mm=[MyStudent StudentWithName:@"aa" AndLastName:@"bb" AndBookName:@"cc" AndAge:12];
        NSLog(@"%@",mm);
        
    }
    return 0;
}