You have a genealogy: 1) Describe a data structure to represent it. 2) Given any two people within the genealogy, describe an algorithm to determine if they share a common ancestor. You just need to return true/false, not all ancestors.
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You have a n number of cities. Lets say city 1 has some information that needs to be sent to all other n-1 cities using minimal cost. Cost between each pair of cities is given. any number of cities can transmit the information once they receive the information but the overall total cost should be minimum
Given two files that has list of words (one per line), write a program to show the intersection.
Reverse words in a sentence (a char[]) without using additional space. eg. "Hello there children" -> "children there Hello"
Three of my 150 friends have phone numbers ending in a permutation of the digits 0, 1, 4, and 9. Is this surprising?
Determine if a string is valid based on placement of parenthesis. i.e. "123(13(44))" is valid but ")234(12)(" is not.
Given an array of strings with commit ids, and a predicate isBuggy that returns if a single commit is buggy, write a program that finds the first buggy commit. - When a commit is buggy, we assume that all its children are buggy. - When a commit is not buggy, we assume that all its ancestors are not buggy. After solving it, I had to describe its time complexity and spatial complexity and how would I choose the test cases.
How do you swap 2 variable without using temporaries. (My version is given 2 register and 1 ALU, how do you swap the value of the 2 register without using external register or temporaries)
Use basic arithmetic operations (+-*/) to implement sqrt function.
Given a string write a function which prints all the subsets of the string. Now make the function to return only unique solutions. For example if they give you "abc" you print out a ab abc ac b bc c Now for the unique solution constraint, if they give you "aba" the output should be: a ab aba b
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