initial commit

maxprofit/src/main.cpp

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+#include <cassert>
+#include <vector>
+#include "maxprofit.hpp"
+#include <iostream>
+
+int main() {
+    std::vector<int> prices = {7,1,5,3,6,4};
+    int output = maxProfit(prices);
+    std::cout << "output: " << output << std::endl;
+    assert(output == 5);
+    prices = {7,6,4,3,1};
+    output = maxProfit(prices);
+    std::cout << "output: " << output << std::endl;
+    assert(output == 0);
+    return 0;
+}

maxprofit/src/maxprofit.hpp

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+#include <cmath>
+#include <vector>
+
+inline int maxProfit(std::vector<int> &prices) {
+  int max_profit = 0;
+  float min_price = INFINITY;
+  for (int i = 0; i < int(prices.size()); i++) {
+    if (prices[i] < min_price) min_price = prices[i];
+    int profit = prices[i] - min_price;
+    if (profit > max_profit) max_profit = profit;
+  }
+  return max_profit;
+}