Adding easy puzzles

puzzles/easy/chuck-norris.cpp

@@ -0,0 +1,69 @@
+// https://www.codingame.com/ide/puzzle/chuck-norris
+// Xavier Morel - 2014-10-16
+
+#include <iostream>
+#include <string>
+#include <vector>
+#include <algorithm>
+
+using namespace std;
+
+void print_bits(bool bit, int len)
+{
+    static bool first_char = true;
+
+    if (!first_char) {
+        cout << ' ';
+    }
+
+    cout << '0';
+    if (!bit) {
+        cout << '0';
+    }
+    cout << ' ';
+
+    for (int i = 0; i < len; i++) {
+        cout << '0';
+    }
+
+    first_char = false;
+}
+
+/**
+ * Auto-generated code below aims at helping you parse
+ * the standard input according to the problem statement.
+ **/
+int main()
+{
+    string MESSAGE;
+    getline(cin, MESSAGE);
+
+    // Write an action using cout. DON'T FORGET THE "<< endl"
+    // To debug: cerr << "Debug messages..." << endl;
+
+    bool bit;
+    int len = 0;
+
+    for (char c : MESSAGE) {
+        // cerr << "Letter " << c << endl;
+        for (int w = 7; w > 0; w--) {
+            bool cur_bit = (c & 1 << (w - 1));
+            if (len == 0 || bit == cur_bit) {
+                bit = cur_bit;
+                len++;
+            } else if (bit != cur_bit) {
+                // cerr << "printing " << len << " bits " << (bit ? '1' : '0') << endl;
+                print_bits(bit, len);
+                bit = cur_bit;
+                len = 1;
+            }
+
+            // cerr << "weight " << w << ": " << (bit ? '1' : '0') << endl;
+        }
+        // cerr << "printing " << len << " bits " << (bit ? '1' : '0') << endl;
+    }
+
+    print_bits(bit, len);
+
+    cout << endl;
+}