feat: refactor + remove trading section

public/code/algorithms/extrema-circular-buffer/naive.cpp

@@ -0,0 +1,38 @@
+#include <algorithm>
+#include <deque>
+#include <stdexcept>
+
+class ExtremaCircularBuffer {
+public:
+  ExtremaCircularBuffer(size_t capacity) : capacity(capacity) {}
+
+  void push_back(double value) {
+    if (prices.size() == capacity) {
+      prices.pop_front();
+    }
+
+    prices.push_back(value);
+  }
+
+  void pop_front() {
+    if (prices.empty()) {
+      throw std::out_of_range("Cannot pop_front() from empty buffer");
+    }
+
+    prices.pop_front();
+  }
+
+  size_t size() const { return prices.size(); }
+
+  double get() const {
+    if (prices.empty()) {
+      throw std::out_of_range("Cannot find max() of empty buffer");
+    }
+
+    return *std::max_element(prices.begin(), prices.end());
+  }
+
+private:
+  std::deque<double> prices;
+  size_t capacity;
+};