add solutions

1 files changed, 37 insertions, 0 deletions

diff --git a/challenge-250/witawayar/cpp/ch-2.cpp b/challenge-250/witawayar/cpp/ch-2.cpp
new file mode 100644
index 0000000000..290e1efc60
--- /dev/null
+++ b/challenge-250/witawayar/cpp/ch-2.cpp
@@ -0,0 +1,37 @@
+// g++ -Wall -Wextra -Wpedantic -std=c++17 cpp/ch-2.cpp
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+int fun(std::vector<std::string> alpha_num_strs) {
+    int max = -1;
+    for (const std::string& str : alpha_num_strs) {
+        int current =
+            str.find_first_not_of("0123456789") == std::string::npos
+              ? std::stoi(str)
+              : str.size();
+        if (current > max) {
+            max = current;
+        }
+    }
+    return max;
+}
+
+int main(void) {
+    std::vector<std::pair<std::vector<std::string>, int>> tests = {
+        {{"perl", "2", "000", "python", "r4ku"}, 6},
+        {{"001", "1", "000", "0001"}, 1},
+        {{"-12", "2"}, 3}
+    };
+    
+    for (const auto& [input, expected_output] : tests) {
+        int got = fun(input);
+        if (got != expected_output) {
+            std::stringstream error_msg;
+            error_msg << "Expected " << expected_output << ", got " << got;
+            throw std::runtime_error(error_msg.str());
+        }
+    }
+    
+    std::cout << "done-testing, success\n";
+}