python

Data Structure

[Solved] Langford Pairing Contest Problem

Langford Pairing: You are given a positive integer N. Return a list of integers of size 2N containing all the integers from 1 to N (both inclusive) twice arranged according to Langford pairing. If no such pairing exists return -1 is…

Saurav Hathi
June 17, 2022

Pandas, Data Science, Python

[Solved] Column Order and New Entry using Pandas Python

Column Order and New Entry: Digvijay is going to manage the event data. He is having the data as dataframe, and his manager is requesting him to change the order as cost column and become the 2nd column of the dataframe,…

Saurav Hathi
June 13, 2022

LeetCode

[Solved] Naming a Company LeetCode Contest Problem

Naming a Company: You are given an array of strings ideas that represents a list of names to be used in the process of naming a company. The process of naming a company is as follows: Choose 2 distinct names from ideas, call them ideaA and ideaB. Swap…

Saurav Hathi
June 12, 2022

LeetCode

[Solved] Fair Distribution of Cookies LeetCode Contest Problem

Fair Distribution of Cookies: You are given an integer array cookies, where cookies[i] denotes the number of cookies in the ith bag. You are also given an integer k that denotes the number of children to distribute all the bags of cookies to. All the cookies in the same…

Saurav Hathi
June 12, 2022

LeetCode

[Solved] Minimum Path Cost in a Grid LeetCode Contest Problem

Minimum Path Cost in a Grid: You are given a 0-indexed m x n integer matrix grid consisting of distinct integers from 0 to m * n – 1. You can move in this matrix from a cell to any other cell in the next row. That is, if you are in…

Saurav Hathi
June 12, 2022

LeetCode

[Solved] Calculate Amount Paid in Taxes LeetCode Contest Problem

Calculate Amount Paid in Taxes: You are given a 0-indexed 2D integer array brackets where brackets[i] = [upperi, percenti] means that the ith tax bracket has an upper bound of upperi and is taxed at a rate of percenti. The brackets are sorted by upper bound (i.e. upperi-1 < upperi for 0 < i < brackets.length). Tax…

Saurav Hathi
June 12, 2022

LeetCode, C++, Java, Python

[Solved] Match Substring After Replacement LeetCode Contest Problem

Match Substring After Replacement: You are given two strings s and sub. You are also given a 2D character array mappings where mappings[i] = [oldi, newi] indicates that you may replace any number of oldi characters of sub with newi. Each character in sub cannot be replaced more than once. Return true if it is possible to make sub a substring…

Saurav Hathi
June 11, 2022

Python, Data Science

Top YouTube Channel for Python Data Science

Python has become the most popular programming language in data science and machine learning. There are many great Python data science channels on YouTube, but here are our top 2 favorites: YouTube is one of the best ways to learn…

Saurav Hathi
June 11, 2022

Python

MCQs Relationship with classes Advanced Python Programming

MCQs Relationship with classes 1. Do we’ve to use list() to perform one-many operation? FALSE TRUE Ans: True 2. How can you perform many to many relationship? By using dictionary in each class By using list in each class By…

Saransh Saurav
June 8, 2022

Pandas, Data Science, Python

Column Indexing using Pandas – Python

Praveen, MBA student decided to begin a business on his own in event management. He also set a good pace very soon but lately, it was difficult for him to keep things in track and note which is the upcoming event…

Saurav Hathi
June 7, 2022