NSArray 各种排序

数组排序

[array sortedArrayUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
    return [obj1 compare:obj2]; //升序
    return [obj2 compare:obj1]; //降序
}];

数组中字典排序

 NSMutableArray *tempArr = [arr sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {  
    if([[obj1 objectForKey:@"key"]intValue] < [[obj2 objectForKey:@"key"]intValue]){  
         return NSOrderedAscending;  
    }  
    if([[obj1 objectForKey:@"key"]intValue] > [[obj2 objectForKey:@"key"]intValue]){  
         return NSOrderedDescending;  
    }  
    return NSOrderedSame;  
  }];  

数组中字典按照某个value排序

NSArray *sortArr = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"key" ascending:YES]];
[listArr sortUsingDescriptors:sortArr];

排序方法

[listArr sortUsingDescriptors:(nonnull NSArray *)];
[listArr sortUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {}];
[listArr sortUsingFunction:(nonnull NSInteger (*)(id  _Nonnull __strong, id  _Nonnull __strong, void * _Nullable)) context:(nullable void *)];
[listArr sortedArrayHint];
[listArr sortedArrayUsingSelector:(nonnull SEL)];
[listArr sortedArrayUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {}];
[listArr sortedArrayUsingFunction:(nonnull NSInteger (*)(id  _Nonnull __strong, id  _Nonnull __strong, void * _Nullable)) context:(nullable void *) hint:(nullable NSData *)];
[listArr sortedArrayWithOptions:(NSSortOptions) usingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {}];
[listArr sortWithOptions:(NSSortOptions) usingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {}];