Given a set of inputs <number, userid> in a log file: log: <number, userid> example: 1,2 1,1 2,1 3,1 1,2 out: <number, count> 1,2 2,1 3,1 The output should be all the unique numbers and the count associated with them.
Engineer Interview Questions
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Design a linked list operation that takes a singly-linked list (only forward ptrs, no backward ptrs) as input and reverses the list.
You are given intervals of contiguous integers, like [1, 10), [15, 25), [40, 50), which are non-overlapping and of a fixed size. Design a data structure to store these intervals and have the operations of insert, delete, and find functions
Signed NDA. But phone interview questions were same as mentioned many times here: flatten array, optimize a function, implement a simple Observable.
It was a mathematical questions about finding the greatest number (but less than the given number) by reordering the digits in the number.
Round 1: Given a string and a style array render HTML pretty much like a rich text editor. For example: 'Hello, world', [[0, 2, 'i'], [4, 9, 'b'], [7, 10, 'u']] Output: '<i>Hel</i>l<b>o, w<u>orl</u></b><u>d</u> something like that.
Check if a string is a pallindrome Find the longest distance between any two nodes in a binary tree.
How do you see which disks are currently mounted?
2 leetcode easies, 2 leetcode mediums (Codesignal)
Sort a matrix in diagonal order after manipulation
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