Josephus Problem

Certified Associate Developer

100 people standing in a circle in an order 1 to 100. No. 1 has a sword. He kills the next person (i.e. No. 2) and gives the sword to the next (i.e. No. 3). All people do the same until only 1 survives. Which number survives at the last? 
There are 100 people starting from 1 to 100. 

can anyone please tell me how can i do it?

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