Tag: math

Teaching Kids Programming: Videos on Data Structures and Algorithms Permutation and Combination are the math concepts to count. Given N items, if we want to choose M items (M …

Write a method to return all subsets of a set. The elements in a set are pairwise distinct. Note: The result set should not contain duplicated subsets. Example: Input: nums …

Teaching Kids Programming: Videos on Data Structures and Algorithms Given an integer n, return whether its prime factors only include 2, 3 or 5. Constraints 0 ≤ n < …

You are given a lists of non-negative integers nums. Sort the list in ascending order by the number of 1s in binary representation for each number. If there are …

X of a Kind in a Deck of Cards In a deck of cards, each card has an integer written on it. Return true if and only if you …