n people are standing in a queue to buy entry ticket for the carnival. People present there strongly believe in chivalry. Therefore, at time = t, if a man at position x, finds a woman standing behind him then he exchanges his position with her and therefore, at time = t+1, woman is standing at position x while man is standing behind her.
Given the total number of people standing in a queue as n, particular instant of time as t and the initial arrangement of the queue in the form of a string containing ‘M’ representing man at position i and ‘W’ representing woman is at position i, find out the arrangement of the queue at time = t.
Input : n = 6, t = 2
At t = 1, 'B' at position 2 will swap
with 'G' at position 3 and 'B' at
position 5 will swap with 'G' at
position 6. String after t = 1 changes
to "BGBBGB". Now at t = 2, 'B' at
position = 1 will swap with 'G' at
position = 2 and 'B' at position = 4
will swap with 'G' at position 5.
String changes to "GBBGBB". Since,
we have to display arrangement at
t = 2, the current arrangement is
Input : n = 8, t = 3