Скачать или смотреть DIVISIBLE SUM PAIRS

Given an array of integers and a positive integer , determine the number of pairs where and + is divisible by .

EXPLANATION CODE:

The variable count is initialised to 0, representing the count of pairs that meet the condition.

The outer loop starts from the first element and goes up to the second-to-last element of the list. It iterates through the elements one by one, considering each element as a starting point for creating pairs.

The inner loop is nested inside the outer loop and starts from the next element after the current outer loop element. It continues until the last element of the list. This inner loop allows pairing the current outer loop element with each subsequent element in the list.

By using this nested loop structure, the code ensures that each element in the list is paired with all the elements that come after it, without repeating any pairs or missing any elements.

Inside the loops, the code checks if the sum of the elements at indices i and j in the ar list is divisible by k. If it is, the count variable is incremented by 1.

After both loops are complete, the function returns the final value of count, which represents the total count of pairs in the ar list whose sum is divisible by k.

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Contents:
0:00 - Reading
2:57 - Solving
4:28 - Explaining