Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.
5ヶ月 前
解決済み
swap sign sum & multiply castles
It is an easy problem, if you know the answer.
Given a square matrix of NxN ordinary numbers.
Initially place N identical indi...
5ヶ月 前
解決済み
Remove a specific character with another
Remove any (-) dash sign with (_) underscore
Ex = 'The-Journey-of-thoudsands-miles-starts-with-a-single-step'
y = 'The_Jour...
5ヶ月 前
解決済み
Sum of series
a(n) = n^2 - (n-1)^2
find the summation of the series upto n i.e.
a(1)+a(2)+...+a(n)