NSArray 排序

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转：NSArray 内容排序

    //1. 数字型字符串    NSArray *originalArray = @[@"1",@"21",@"12",@"11",@"0"];        //block比较方法，数组中可以是NSInteger，NSString（需要转换）    NSComparator finderSort = ^(id string1,id string2){        if ([string1 integerValue] > [string2 integerValue]) {            return (NSComparisonResult)NSOrderedDescending;        }else if ([string1 integerValue] < [string2 integerValue]){            return (NSComparisonResult)NSOrderedAscending;        }        else            return (NSComparisonResult)NSOrderedSame;    };        //数组排序：    NSArray *resultArray = [originalArray sortedArrayUsingComparator:finderSort];    NSLog(@"第一种排序结果：%@",resultArray);            //2. 非数字型字符串    NSArray *charArray = @[@"string 1",@"String 21",@"string 12",@"String 11",@"String 02"];    NSStringCompareOptions comparisonOptions = NSCaseInsensitiveSearch|NSNumericSearch|    NSWidthInsensitiveSearch|NSForcedOrderingSearch;    NSComparator sort = ^(NSString *obj1,NSString *obj2){        NSRange range = NSMakeRange(0,obj1.length);        return [obj1 compare:obj2 options:comparisonOptions range:range];    };    NSArray *resultArray2 = [charArray sortedArrayUsingComparator:sort];    NSLog(@"字符串数组排序结果%@",resultArray2);        // 3字典对象    NSMutableArray *array = [NSMutableArray arrayWithObjects:                             [NSDictionary dictionaryWithObjectsAndKeys:@"Obj0", [NSNumber numberWithInt:0], nil],                             [NSDictionary dictionaryWithObjectsAndKeys:@"Obj5", [NSNumber numberWithInt:5], nil],                             [NSDictionary dictionaryWithObjectsAndKeys:@"Obj2", [NSNumber numberWithInt:2], nil],                             [NSDictionary dictionaryWithObjectsAndKeys:@"Obj3", [NSNumber numberWithInt:3], nil],                             [NSDictionary dictionaryWithObjectsAndKeys:@"Obj1", [NSNumber numberWithInt:1], nil],                             [NSDictionary dictionaryWithObjectsAndKeys:@"Obj4", [NSNumber numberWithInt:4], nil], nil];        NSArray *resultArray = [array sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {        NSNumber *number1 = [[obj1 allKeys] objectAtIndex:0];        NSNumber *number2 = [[obj2 allKeys] objectAtIndex:0];        NSComparisonResult result = [number1 compare:number2];                //return result == NSOrderedAscending;  // 降序        return result == NSOrderedDescending; // 升序    }];    NSLog(@"OrderedDescending:%@", resultArray);

    //4.自定义对象    Person *person1 = [[Person alloc] init];    [person1 setName:@"ABCD"];    [person1 setAge:24];        Person *person2 = [[Person alloc] init];    [person2 setName:@"ACBD"];    [person2 setAge:22];        Person *person3 = [[Person alloc] init];    [person3 setName:@"ABDC"];    [person3 setAge:33];        Person *person4 = [[Person alloc] init];    [person4 setName:@"ACDB"];    [person4 setAge:22];        NSMutableArray *array = [NSMutableArray arrayWithObjects:person1, person3, person4, person2, nil];    NSSortDescriptor *sortDescriptor1 = [NSSortDescriptor sortDescriptorWithKey:@"age" ascending:YES];  //先按照age排序,    NSSortDescriptor *sortDescriptor2 = [NSSortDescriptor sortDescriptorWithKey:@"name" ascending:YES];  //如果age相同, 按照name排序,以此类推    NSArray *tempArray = [array sortedArrayUsingDescriptors:[NSArray arrayWithObjects:sortDescriptor1, sortDescriptor2, nil]];        for(NSInteger i = 0; i < [tempArray count]; i++){        NSLog(@"%@--------%d\n", [[tempArray objectAtIndex:i] name], [[tempArray objectAtIndex:i] age]);    }

#import <Foundation/Foundation.h>@interface Person : NSObject@property (nonatomic, strong) NSString *name;@property (nonatomic, assign) NSInteger age;@end

#import "Person.h"@implementation Person@synthesize name;@synthesize age;@end

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