object-c中数组的排序

//
//  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 SimpleNSMutableArraySort(){
    NSMutableArray *arr=[NSMutableArray arrayWithObjects:@"AB",@"AE",@"AC", nil];
    [arr sortUsingSelector:@selector(compare:)];//反射通过名字来获得方法 ,利用对象compare: 方法比较可以自定义，但是必须返回值为
//NSComparisonResult
    
    NSLog(@"%@" ,arr);
}

void ModelNSMutableArraySort(){
    Student *s1=[Student StudentWithName:@"wen" AndLastName:@"li"];
    Student *s2=[Student StudentWithName:@"xen" AndLastName:@"Li"];
    Student *s3=[Student StudentWithName:@"xen" AndLastName:@"z"];
    NSMutableArray *arr=[NSMutableArray arrayWithObjects:s1,s2,s3, nil];
    [arr sortUsingSelector:@selector(CompareStudent:)];
    
    NSLog(@"%@" ,arr);
}

void BlockNSMutableArraySort(){
    Student *s1=[Student StudentWithName:@"wen" AndLastName:@"li"];
    Student *s2=[Student StudentWithName:@"xen" AndLastName:@"Li"];
    Student *s3=[Student StudentWithName:@"xen" AndLastName:@"z"];
    NSMutableArray *arr=[NSMutableArray arrayWithObjects:s1,s2,s3, nil];
    //==<#^NSComparisonResult(id obj1, id obj2)cmptr#>
    [arr sortUsingComparator:^NSComparisonResult(Student *stu,Student *stu1){
        NSComparisonResult reslut=[stu.LastName compare:stu1.LastName ];
        if(reslut==NSOrderedSame){
            reslut=[stu.Name compare:stu1.Name];
        }
        
        return reslut;
        
    }];
    NSLog(@"%@",arr);
    
}

void MoreModelNSMutableArraySort(){
    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"];
    NSMutableArray *arr=[NSMutableArray arrayWithObjects:s1,s2,s3, nil];
    NSSortDescriptor *BookName=[NSSortDescriptor sortDescriptorWithKey:@"bk.BookName" ascending:YES];
    NSSortDescriptor *LastName=[NSSortDescriptor sortDescriptorWithKey:@"LastName" ascending:YES];
    NSSortDescriptor *Name=[NSSortDescriptor sortDescriptorWithKey:@"Name" ascending:YES];
    NSArray *A=[NSArray arrayWithObjects:BookName,LastName,Name, nil];
    [arr sortUsingDescriptors:A];//调用对象的copare方法，没有指定block
    NSLog(@"%@",arr);
    
}
//---------NSArray排序
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 {
        
        MoreModelNSMutableArraySort();
      
        
    }
    return 0;
}

 

转载于:https://www.cnblogs.com/gcb999/archive/2013/05/01/3053273.html