Even Frequency of Array using Sort or Hash Map
Given a list of integers nums, return whether all numbers appear an even number of times. Constraints n ≤ 100,000 where n is the length of nums Example 1 …
Teaching Kids Programming – Reversing a List using Stack
November 24, 2020
algorithms, data structure, python, teaching kids programming, youtube video
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Teaching Kids Programming: Videos on Data Structures and Algorithms Introduction to Stack Stack is an important and commonly-used data structure that implements First In Last Out. The first item …
Teaching Kids Programming – Computing Fibonacci Numbers using 3 Methods
November 23, 2020
algorithms, dynamic programming, python, recursive, teaching kids programming, youtube video
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Teaching Kids Programming: Videos on Data Structures and Algorithms Mathematically, the Fibonacci Numbers are: Fibonacci Number – Recursion def f(n): if n == 0: return 0 if n == …
Two Pointer Sliding Window to Compute the Longest Substring with At Most Two Distinct Characters
Given a string s , find the length of the longest substring t that contains at most 2 distinct characters. Example 1: Input: “eceba” Output: 3 Explanation: t is …
Teaching Kids Programming – From Linear Search to Binary Search Algorithm
November 23, 2020
algorithms, binary search, brute force, python, teaching kids programming, youtube video
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Teaching Kids Programming: Videos on Data Structures and Algorithms Linear Search Algorithm to Find Square Root Taking sqrt(n) for example, the linear search (a kind of a bruteforce search …
Check If an Array Represents a Max Heap (Danny Heap Algorithm)
Given a list of integers nums, return whether it represents a max heap. That is, for every i we have that: nums ≥ nums if 2*i + 1 is …