Jan 30, 2025 · Given a list and a set of indices, the goal is to compute the sum of elements present at those indices. For example, given the list [10, 20, 30, 40, 50] and indices [1, 3], the …

Jun 10, 2016 · For your first attempt, you can actually use itertools.product. For your second attempt, Actually, your sum (p_t[i, j] for i in range(num_products) for j in range(num_products)) …

Oct 2, 2023 · In this post, we will delve into three diverse solutions to the Two Sum Problem in Python, thoroughly evaluating their time and space complexity to aid in comprehending the …

May 30, 2024 · How to add two lists in python, for example, index-wise summation of numbers? You can perform index-wise addition or summation of two lists by using list comprehension, …

Apr 9, 2023 · Given a list of elements, The task is to write a Python program to repeat each index value as per the value in that index. Input : test_list = [3, 0, 4, 2] Output : [0, 0, 0, 2, 2, 2, 2, 3, …

Apr 19, 2025 · Write a Python program to calculate the sum of the numbers in a list between the indices of a specified range. Sample Solution: sum_range = 0 # Iterate through the list from …

Mar 26, 2015 · I have a list with numbers in it and I would like to sum different parts (in successive order) of that list and store those values in a new list. Example: a = [0, 1, 2, 3, 4, 5] b = [] …

Mar 11, 2024 · Method 1: Using the Sum Function. Python’s built-in sum() function is the most straightforward way to sum elements in a list. It takes an iterable and returns the sum of its …

Dec 9, 2017 · You can use sum directly after indexing with indices: a = np.array([1,2,3,4]) indices = [0, 2] a[indices].sum()

May 5, 2023 · This method uses NumPy to extract the elements from the test_list based on their indices present in the index_list. The np.take() function is used to extract the required …