Arryn's PD calculator v1.01

[alexti]

Originally posted by Arryn:
I've put up on my website a Java utility I wrote to calculate PD costs for those that are too lazy to use a calculator, or that don't wish to use a spreadsheet.

Screenshot of the program showing:

code:

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Initial PD: 10

Target PD: 21

Cost to raise PD: 165

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May I ask you if the image shows the real output?To my knowledge, the cost to raise PD from 10 to 21 is 176, not 165. And for extremely lazy people (like me ) who can't be bothered to start the program to do the calculation, the formula seems to be (n1+n0+1)*(n1-n0)/2. n0 is starting PD, n1 is target PD.