NSArray *orignalArr = @[@"3", @"12", @"4", @"1", @"4", @"8"];NSArray *resultArr = [orignalArr sortedArrayUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {    if ([obj1 integerValue] > [obj2 integerValue]) {        return NSOrderedDescending;    }else if ([obj1 integerValue] < [obj2 integerValue]){        return NSOrderedAscending;    }else{        return NSOrderedSame;    }}];NSLog(@"升序排列的数组:%@", resultArr);复制代码