No Pairs Allowed Description For each word in a list of words, if any two adjacent characters are equal, change one of them. Determine the minimum numbe…

Given an integer array nums , rotate the array to the right by k steps, where k is non-negative. Example 1: Input: nums = [1,2,3,4,5,6,7], k = 3 Output:…

Given 2 dates in the format yyyy/mm/dd , return the number of days between them. Do not use any library; parse it manually. Consider leap years and diff…

Evaluate Boolean Expression Given a boolean expression containing the symbols T , F , & , | , ^ , and parentheses, evaluate the expression and retur…

Given a list, e.g. [“apple”, “banana”, “ant”, …] , with an input prefix, find all the words starting with the prefix from the above list. Examples: pr…

def format_data_for_modelling(schema, training_data, label_data): Takes in a list of headers, a training data set and info on the eventual outcome (a.k….

Write a function that returns the smallest nonnegative number which can be generated by using all the digits with odd values of a given number. Example:…

Design a key-value store with snapshot support. Implement the following functions: void put(string key, string value) void delete(string key) string get…

Implement a channel (like the Golang primitive) that can be used for communicating between threads, such that all data sent will become available for re…

Sampling profilers are a performance analysis tool for finding the slow parts of your code by periodically sampling the entire call stack. In this probl…

Create a React app that allows a user to search entries received from the following “posts” API: https://jsonplaceholder.typicode.com/posts A post will…

We want you to add an extra method, quantile_clip , to pandas.Series and pandas.DataFrame . quantile_clip has a couple of modes: my_series.quantile_clip…

Word Search Collection Given a grid of letters and a list of words, return all words from the list that can be formed in the grid. Words can be formed b…

You are a new engineer at a Databricks competitor startup named DataTricks, which is implementing its own Lakehouse platform. They have assigned you to…

Given two strings s and t of lengths m and n respectively, return the minimum window substring of s such that every character in t (including duplicates…

Grouping Sums Given a string s made of digits ( 0-9 ), treat consecutive equal digits as a group. For each group, add it to a running total. Return the…

Given a string text and a list of words word_bank , insert spaces into text to construct all possible sentences where every word is found in word_bank ….

Implement a prototype of a simple cache query handler. There are n data entries stored in the cache. Each entry is of the form {timestamp, key, value} ,…

Given a file of currency conversion rates, write a function that converts one currency to another. Sample log file entries: {“from”:”USD”, “to”:”EUR”, “…

You’re working at Amazon retail and you’re in charge of implementing a method/function to be used by the promotions team to apply a discount to each ind…