NSArray *array = @[@{@"date": @"2018-04",
@"value": @"4459.118"},
@{@"date": @"2017-06",
@"value": @"17064.600"},
@{@"date": @"2017-10",
@"value": @"17547.200"},
@{@"date": @"2017-11",
@"value": @"18474.300"},
@{@"date": @"2018-01",
@"value": @"8000.057"},
@{@"date": @"2017-12",
@"value": @"212.463"}
];
NSMutableArray *myMutableArr = [NSMutableArray arrayWithArray:array];
NSArray *sortDescriptors =[NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"date" ascending:YES]];
[myMutableArr sortUsingDescriptors:sortDescriptors];
NSLog(@"排序后的数组%@",myMutableArr);