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Monthly Archives: January 2012
Programming Interview Questions 27: Squareroot of a Number
Find the squareroot of a given number rounded down to the nearest integer, without using the sqrt function. For example, squareroot of a number between [9, 15] should return 3, and [16, 24] should be 4.
Posted in Programming Interview
18 Comments
Programming Interview Questions 26: Trim Binary Search Tree
Given the root of a binary search tree and 2 numbers min and max, trim the tree such that all the numbers in the new tree are between min and max (inclusive). The resulting tree should still be a valid binary … Continue reading
Posted in Programming Interview
16 Comments
Implementing Search Engines
Welcome to my ‘how to implement a search engine’ series. I describe how to implement an actual search engine with working code in python. Here you can find pointers to original detailed articles. I will continue to share in this … Continue reading
Posted in Search Engines
5 Comments
Programming Interview Questions
The complete list of all my programming interview question articles with pointers to original posts. There are 28 questions in total, and since 28 is a perfect number (as Donald Knuth also mentioned) I decided that’s a good place to stop.
Posted in Programming Interview
30 Comments
Programming Interview Questions 25: Remove Duplicate Characters in String
Remove duplicate characters in a given string keeping only the first occurrences. For example, if the input is ‘tree traversal’ the output will be ‘tre avsl’.
Posted in Programming Interview
13 Comments
Programming Interview Questions 24: Find Next Higher Number With Same Digits
Given a number, find the next higher number using only the digits in the given number. For example if the given number is 1234, next higher number with same digits is 1243.
Posted in Programming Interview
33 Comments