Calculating Time and Cost of Building Floors in Tiny Tower

calculate-construction-cost.md

Calculating Construction Cost

According to the Tiny Tower Wiki the equation for calculating how much it costs to build a given floor is:

cost = 150 × floor_number 2

A simple way to evaluate this equation in Ruby would be:

floor_number = 10
cost = 150*(floor_number**2)

For those that build in chunks, rather than one floor at a time, it's nice to know how much you need to save before you can build a certain number of floors. Using Ruby once again, this is a trivial operation:

def calculate_building_cost_for(floor_numbers)
  floor_numbers.inject(0) { |total_cost, floor_number| total_cost + (150*(floor_number**2)) }
end

# Let's say we want to build floors 50 to 59
floor_numbers = 50..59
# Pass that range into our Ruby method
calculate_building_cost_for(floor_numbers)

Running the above operation would evaluate to 4467750.

calculate-construction-time.md

Calculating Construction Time

According to the Tiny Tower Wiki the equation for calculating how long it takes to build a given floor is:

time_in_minutes = 30 × (floor_number - 1)

A simple way to evaluate this equation in Ruby would be:

floor_number = 10
time_in_minutes = 30*(floor_number-1)

# Wrapped in a method
def calculate_construction_time_for(floor_number)
  30*(floor_number-1)
end

# Let's say we want to build floor 52
floor_number = 52
# Pass that floor number into our Ruby method
calculate_construction_time_for(floor_number)

Running the above operation would evaluate to 1530 minutes, or approximately 25 hours.

It does not make sense to calculate the construction time for a group of floors because the construction time is always based on the top floor of the tower.