See the original problem on HackerRank.
Solutions
This exercise is very easy. At Coding Gym we experiment with such exercises to learn more.
Some solutions follow.
C++:
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int N; cin >> N;
for (auto i=1; i<=N; ++i)
{
cout << string(N-i, ' ') << string(i, '#') << endl;
}
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C#:
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int n = Convert.ToInt32(Console.ReadLine());
for (int i = 1; i <= n; i++)
Console.WriteLine(new String(' ', n - i) + new String('#', i));
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Python:
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n = input()
for i in range(1,n+1):
print " "*(n-i) + "#"*i
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Ruby:
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n = gets.strip.to_i
(1..n).each do |i|
puts( " " * (n-i) + "#"*(i))
end
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Haskell:
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staircase :: Int -> String
staircase n =
unlines $ (\m -> replicate (n - m) ' ' ++ replicate m '#') <$> [1 .. n]
main = interact $ staircase . read
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