Algorithms : add 03-algorithms_on_graphs 01-decomposition

3 files changed, 28 insertions, 0 deletions

diff --git a/03-algorithms_on_graphs/01-decomposition/02-connected_components/connected_components.cpp b/03-algorithms_on_graphs/01-decomposition/02-connected_components/connected_components.cpp
new file mode 100644
index 0000000..8e6b531
--- /dev/null
+++ b/03-algorithms_on_graphs/01-decomposition/02-connected_components/connected_components.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <vector>
+
+using std::vector;
+using std::pair;
+
+int number_of_components(vector<vector<int> > &adj) {
+  int res = 0;
+  //write your code here
+  return res;
+}
+
+int main() {
+  size_t n, m;
+  std::cin >> n >> m;
+  vector<vector<int> > adj(n, vector<int>());
+  for (size_t i = 0; i < m; i++) {
+    int x, y;
+    std::cin >> x >> y;
+    adj[x - 1].push_back(y - 1);
+    adj[y - 1].push_back(x - 1);
+  }
+  std::cout << number_of_components(adj);
+}
diff --git a/03-algorithms_on_graphs/01-decomposition/02-connected_components/tests/01 b/03-algorithms_on_graphs/01-decomposition/02-connected_components/tests/01
new file mode 100644
index 0000000..174151f
--- /dev/null
+++ b/03-algorithms_on_graphs/01-decomposition/02-connected_components/tests/01
@@ -0,0 +1,3 @@
+4 2
+1 2
+3 2
diff --git a/03-algorithms_on_graphs/01-decomposition/02-connected_components/tests/01.a b/03-algorithms_on_graphs/01-decomposition/02-connected_components/tests/01.a
new file mode 100644
index 0000000..0cfbf08
--- /dev/null
+++ b/03-algorithms_on_graphs/01-decomposition/02-connected_components/tests/01.a
@@ -0,0 +1 @@
+2