C/C++ Coding Exercise – Find Two Single Numbers
Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two elements that appear only …
Category: algorithms
How to Delete Node in a Linked List (Given Only Access to That Node)?
Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 -> 2 …
C++ Coding Exercise – Palindrome Pairs
This is classified as a hard puzzle: https://leetcode.com/problems/palindrome-pairs/ A palindrome string is a string whose reverse string is exactly the same, e.g. ABBA, 1, UIU… Brute Force Almost every …
Counting Number of Set Bits for N Integers using Dynamic Programming Algorithm in Linear Time
Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1’s in their binary representation and …
The Machine Learning Case Study – How to Predict Weight over Height/Gender using Linear Regression?
Machine learning is very popular nowadays. Everybody claims that they are doing it 🙂 This tutorial will try to explain a few terms in the field of machine learning …