iOS 数组排序

记录一种数组排序的方法。

    NSArray *unSortedArray = @[@1, @5, @3, @7, @9, @2];
    NSLog(@"unSortedArray = %@", unSortedArray);
    NSArray *sortedArray = [unSortedArray sortedArrayUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
        return [obj1 compare:obj2];
    }];
    NSLog(@"sortedArray = %@", sortedArray);

输出结果为:

2020-04-30 13:40:20.202486+0800 Sorted[3643:1348309] unSortedArray = (
    1,
    5,
    3,
    7,
    9,
    2
)
2020-04-30 13:40:20.202626+0800 Sorted[3643:1348309] sortedArray = (
    1,
    2,
    3,
    5,
    7,
    9
)