Algorithms to Compute the Sum of the Number of Digits for First N Natural Integers
Given a integer n, find all the sum of the number of the digits up to n, for example, given n=5, we return 5, because 1,2,3,4,5 are all 1 …
Tag: math
Teaching Kids Programming – Introduction to Two’s Complement (Storing Negative Integers)
Teaching Kids Programming: Videos on Data Structures and Algorithms Two’s complement is a mathematical method used in computers to represent positive and negative integers. It’s the most common method …
Teaching Kids Programming – Last Moment Before All Ants Fall Out of a Plank
November 20, 2023
algorithms, math, programming languages, Python, python, teaching kids programming, youtube video
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Teaching Kids Programming: Videos on Data Structures and Algorithms We have a wooden plank of the length n units. Some ants are walking on the plank, each ant moves …
Teaching Kids Programming – 0/1 Knapsack: Length of the Longest Subsequence That Sums to Target (Recursion+Memoization=Top Down Dynamic Programming)
November 15, 2023
algorithms, Dynamic Programming, Knapsack Problems, math, Permutation, python, Python, Recursion, teaching kids programming, youtube video
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Teaching Kids Programming: Videos on Data Structures and Algorithms You are given a 0-indexed array of integers nums, and an integer target. Return the length of the longest subsequence …
Teaching Kids Programming – Count the Digits That Divide a Number (Three Algorithms)
November 6, 2023
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Teaching Kids Programming: Videos on Data Structures and Algorithms Given an integer num, return the number of digits in num that divide num. An integer val divides nums if …