Find lowest common ancestor (LCA).
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A professor wants to see if two students have cheated when writing a paper. Design a function : hasCheated(String s1,String s2, int N) that evaluates to true if two strings have a common substring of length N. Additional question after implementation. Assume you don't have the possibility of using String.contains() and String.substring(). How would you implement this. Questions about complexity of my solution. Overall a very friendly interviewer, was saying "Good" the entire time, but no idea if he wanted to keep me focused or if it was really good.
Give a set of objects and a function. Pass two objects to that function and it can tell you whether one object points to another one. Find one object that is pointed by all other objects.
Fibonacci: recursive and iterative.
1 sys design, 3 lc medium coding questions
Coding round : If A,B,C are 3 non-zero digits(1-9), find all combinations of A,B,C such that AB * AB = CAB.
Find the length of a C-string, given a pointer to the first character.
I have some cars. You have some cars. If I give you one of my cars, we'll have the same number of cars. If you give me one of your cars, I'll have twice as many cars as you. How many cars do we each have?
NDA
Given a 2D array, find the sum of all the elements in the array. O(n^2) solution is too slow, find ways to optimize (ended up adding a second parameter 2D array).
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