Daily Coding Problem: Problem #225 [Easy]

Good morning!

Here's a solution to yesterday's problem.

This is your coding interview problem for today.

This problem was asked by Bloomberg.

There are N prisoners standing in a circle, waiting to be executed. The executions are carried out starting with the kth person, and removing every successive kth person going clockwise until there is no one left.

Given N and k, write an algorithm to determine where a prisoner should stand in order to be the last survivor.

For example, if N = 5 and k = 2, the order of executions would be [2, 4, 1, 5, 3], so you should return 3.

Bonus: Find an O(log N) solution if k = 2.

We will be sending the solution tomorrow, along with tomorrow's question. As always, feel free to shoot us an email if there's anything we can help with.

Have a great day!

Master algorithms together on Binary Search. Create a room, invite your friends, and race to finish the problem!