requiring you to devise and articulate a solution to a problem. While these aren’t always C# specific, you’ll need to demonstrate proficiency in using C# constructs to implement your solution. Lastly, the cod
The Editorial provides a Fast Fourier Transformation solution O(nlgn)... which is too maths for me. In the leaderboard, I found a not-that-fast O(n^2)
import java.util.*; class Solution{ public static void main(String []argh) { Scanner in = new Scanner(System.in); while(in.hasNext()){ String s = in.next(); Stack<Character> st = new Stack<Character>(); for(int i = 0;i < s.length();i++){ if(!st.empty()){ switch(s....