Tag: String Algorithms

Almost every programmer needs to write a function to reverse a given string and this exercise is kinda a favourite question in first round interviews. To reverse a string, …

The problem is from codeforces: http://www.codeforces.com/problemset/problem/158/C Using a stack will help solve this problem. Luckly, python supports stack structure by using list. The append() and pop() are used to …