Same as above but another one is taken out again. Find the two missing nubmers
Programmer Developer Interview Questions
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Implement division without using multiplication or division. It should work most efficient and fast.
10 people can share a bucket of coins equally. A monkey steals one coin. The no of coins are one less than equal share. one person after the other tries to take the coin but monkey kills them(killing spree?? :-)). each time a person dies the no of coins are always one short of equal share. what were the no of coins originally?.
out of 25 horses select the fastest three in minimum number of races where in each race there would be exactly five horses.
Traverse nodes in a binary tree
In a stream of integers from 1 to n, only one number will be repeated. How can you tell what that number is?
An abstract question about ways to simulate behavior of workers who move stools around a workspace in some controlled way, and what the expected results would be.
Scan an integer and print the alphabet so that: 1-A; 2-B...26-Z; 27-AA,28-AB,29-AC...52-AZ; 53-AAA,54-AAB,55-AAC...78-AAZ...etc.. If you provide an integer, say 28-it should print AB. If you scan another integer say 55, it should show AAC
Given two (dictionary) words as Strings, determine if they are isomorphic. Two words are called isomorphic if the letters in one word can be remapped to get the second word. Remapping a letter means replacing all occurrences of it with another letter while the ordering of the letters remains unchanged. No two letters may map to the same letter, but a letter may map to itself. Example: Given "foo", "app"; returns true we can map 'f' -> 'a' and 'o' -> 'p' Given "bar", "foo"; returns false we can't map both 'a' and 'r' to 'o' Given "turtle", "tletur"; returns true we can map 't' -> 't', 'u' -> 'l', 'r' -> 'e', 'l' -> 'u', 'e' -'r' Given "ab", "ca"; returns true we can map 'a' -> 'c', 'b'
1. Count the number of positive integers less than N that does not contains digit 4. 2. Design a data structure that can do the followings in O(1) time: (1) insert (2) remove (3) getRandom
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