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Project Euler 29

Project Euler

Problem29を解きました.

  • Distinct powers

Consider all integer combinations of ab for 2 ≤ a ≤ 5 and 2 ≤ b ≤ 5:

2^2=4, 2^3=8, 2^4=16, 2^5=32
3^2=9, 3^3=27, 3^4=81, 3^5=243
4^2=16, 4^3=64, 4^4=256, 4^5=1024
5^2=25, 5^3=125, 5^4=625, 5^5=3125
If they are then placed in numerical order, with any repeats removed, we get the following sequence of 15 distinct terms:

4, 8, 9, 16, 25, 27, 32, 64, 81, 125, 243, 256, 625, 1024, 3125

How many distinct terms are in the sequence generated by ab for 2 ≤ a ≤ 100 and 2 ≤ b ≤ 100?

https://projecteuler.net/problem=29

問題は「上記の例にしたがって,2 ≤ a ≤ 100, 2 ≤ b ≤ 100 で同様にした場合,異なる項はいくつ存在するか求めよ」.

data = Array.new()
for a in 2..100 do
	for b in 2..100 do
		data.push(a ** b)
	end
end

p data.sort.uniq.length

sortは余計です.
uniqだけで問題ないです.