two_sum is a Python function that takes in a list of integers (elements) and an integer number (num) and returns True if there exist two values in elements that add up to num, otherwise, function returns False. def two_sum(elements: List[int], num: int): for i in range(len(elements)): for j in range(i + 1): if elements[i] + elements[j] == num: return True return False Study above function and answer below questions: A. What is time complexity of two_sum? B. Is it possible to improve on above algorithm performance (in terms of its asymptotic cost)? If yes, describe your algorithm, be detailed as much as possible.

two_sum is a Python function that takes in a list of integers (elements) and an integer number (num) and returns True if there exist two values in elements that add up to num, otherwise, function returns False. def two_sum(elements: List[int], num: int): for i in range(len(elements)): for j in range(i + 1): if elements[i] + elements[j] == num: return True return False Study above function and answer below questions: A. What is time complexity of two_sum? B. Is it possible to improve on above algorithm performance (in terms of its asymptotic cost)? If yes, describe your algorithm, be detailed as much as possible.

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter7: Arrays

Section7.5: Case Studies

Problem 3E

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Python please! Generalized image blender function Create a function blend images() which takes multiple RGB images as an input, and outputs a blended image. The function should accept following parameters 1. image list- A Python list of 3D arrays where each 3D array corresponds to an RGB image 2. weight list-A Python list of float values between (0, 1) corresponding to the pixel weight to be given to each image-e.g. [0.2, 0.3, 0.1, 0.4] for 4 images. The sum of the weights should be equal to 1. Test your function against a provided list of 5 images with following weight lists (i.e. 2 blended images) [0.2, 0.2, 0.2, 0.2, 0.2]- blend all 5 images [0.2, 0.3, 0.5]- blend first 3 images NOTE: DO NOT USE pre-existing image blending functions.
Please use Python when answering the question: Question 2: numPairs Write a function numPairs that accepts two arguments, a target number and a list of numbers. The function then returns the count of pairs of numbers from the list that sum to the target number. In the first example the answer is 2 because the pairs (0,3) and (1,2) both sum to 3. The pair can be two of the same number, e.g. (2,2) but only if the two 2’s are separate twos in the list. In the last example below, there are three 2’s, so there are three different pairs (2,2) so there are 5 pairs total that sum to 4. Output is shown in the picture:
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