An efficient Python solution using list comprehension, achieving linear time and space complexity.
This Python solution iterates over a list of strings, using list comprehension and the enumerate function to identify indices of words containing a specified character.
Solving 'Number of Good Pairs' with a hashmap, achieving O(N) time and O(U) space by utilizing the combination formula n*(n-1)/2 for pair counting.
Presenting an in-place algorithm to compute the running sum of an array with O(n) time complexity, directly modifying the input array.
A straightforward Python solution to the LeetCode Two Sum problem, utilizing a hashmap for efficient number pairing and aiming for optimal time and space complexity.