Merge pull request #6683 from deadmarshal/challenge180

challenge180

1 files changed, 37 insertions, 0 deletions

diff --git a/challenge-180/deadmarshal/cpp/ch-1.cpp b/challenge-180/deadmarshal/cpp/ch-1.cpp
new file mode 100644
index 0000000000..389fdd96e6
--- /dev/null
+++ b/challenge-180/deadmarshal/cpp/ch-1.cpp
@@ -0,0 +1,37 @@
+#include<cstdio>
+#include<vector>
+#include<string>
+#include<unordered_map>
+
+char *first_unique_character(const std::string& str)
+{
+  char *buffer = new char[39]; 
+  std::vector<char> chars{str.begin(), str.end()};
+  std::unordered_map<char, unsigned> hash{};
+  for(const char& c : str) hash[c]++;
+  for(std::size_t i = 0; i < chars.size(); ++i)
+    if(hash[chars[i]] == 1)
+    {
+      std::snprintf(buffer,
+		    39,
+		    "%zu as '%c' is the first unique character",
+		    i,
+		    chars[i]);
+      break;
+    }
+  return buffer;
+}
+
+int main(int argc, char *argv[])
+{
+  if(argc < 2)
+  {
+    fprintf(stderr, "No arg(s) provided!");
+    exit(1);
+  }
+  char *buffer = first_unique_character(argv[1]);
+  printf("%s\n", buffer);
+  delete buffer;
+  
+  return 0;
+}