As the error states, it cannot convert from ‘System.Collections.Generic.List’ to ‘string’. However I never knew the function SingleOrDefult() existed. All credit to @maccettura even though he didn’t know what I was trying to do! xD Code change below for the answer: List<string> listFrom = new List<string>(); //Contains a list of strings List<string> listTo = new … Read more
all() Returns true if all of the items in list are True >>> print(all([True, True, True, True])) True >>> print(all([False, True, True, False])) False In above problem we need to check if all vowels are present in a string (ex: businesswoman) using all as follows: >>> all(t in “businesswoman” for t in ‘aeiouu’) True Similarly … Read more
Finally print that list to the console >>> cubes_by_four = [x**3 for x in range(1,11) if x**3 % 4 == 0] >>> print(cubes_by_four) [8, 64, 216, 512, 1000] It says print the list, not print each item in the list to console
Use accumulate from itertools: list(itertools.accumulate(l_Of_l)) Out: [[1], [1, 2], [1, 2, 3], [1, 2, 3, 4], [1, 2, 3, 4, 5], [1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 5, 6, 7]]
how does one push_back into list nodes by reference? so when I need to set fields in object both structors will be updated You cannot, unless your list is templated to contain pointers (or even better smart pointers). None of the standard library containers are able to contain references directly.
You could use a Counter to count the elements in the list. Since you know there’s exactly one element that appears once, it will be the least common element, so: def singleNumber(nums): return Counter(nums).most_common()[-1][0]
Simplest will be bubble sort. item* sort(item *start){ item *node1,*node2; int temp; for(node1 = start; node1!=NULL;node1=node1->next){ for(node2 = start; node2!=NULL;node2=node2->next){ if(node2->draw_number > node1->draw_number){ temp = node1->draw_number; node1->draw_number = node2->draw_number; node2->draw_number = temp; } } } return start; }
You can make a wrapper class for the data structure such as public class DateWrapper{ private int a; private int b; private int c; private Date date; public DateWrapper(int a, int b, int c, Date date){ this.a = a; this.b = b; this.a = c; this.date = date; } // getters and setters } and … Read more
You can take a reasonable guess as to what these functions could do from just the declarations. bool (List, int) Takes a list and an element and returns a true/false answer. An immediate guess is “does this list contain this element”. We then look at the definition (*), see that the null list is false, … Read more
You could make a list of lists, which would be better than dynamicaly making new list names. Something like this: input_list = [[278, 207], [695, 205], [672, 205], [325, 205], [302, 205],[650, 167], [556, 167], [533, 167]] output_list = [[input_list[0]]] # Create an output list, with the first element of input_list as a list of … Read more