Algorithmic Patterns with Stacks, Monotonic Deques, and Priority Queues in C++
Evaluating Reverse Polish Notation
Reverse Polish Notation (RPN) eliminates the need for parentheses by placing operators after their operands. A stack-based approach efficiently processes tokens in a single pass.
class Solution {
public:
int evalRPN(vector<string>& expr) {
stack<int> eval_stack;
for (const a ...
Posted on Sat, 09 May 2026 00:38:32 +0000 by tazgalsinh