1 files changed, 45 insertions, 0 deletions
diff --git a/structures/task14.cpp b/structures/task14.cpp
new file mode 100644
index 0000000..fcd9d63
--- /dev/null
+++ b/structures/task14.cpp
@@ -0,0 +1,45 @@
+#include <iostream>
+#include "queue.h"
+
+using namespace std;
+
+void result(queue *&h, queue *&t, queue *&hr, queue *&tr)
+{
+    while (h)
+    {
+        int el = char(pop(h, t));
+        if (  '0' <= el && el <= '9'
+           || 'a' <= el && el <= 'z' 
+           || 'A' <= el && el <= 'Z' )
+        {
+            push(hr, tr, int(el));
+        }
+    }
+}
+
+int main()
+{
+    int n;
+    cout << "n = ";
+    cin >> n;
+
+    queue *head = NULL;
+    queue *tail = NULL;
+    char x;
+    for (int i = 0; i < n; i++)
+    {
+        cin >> x;
+        push(head, tail, int(x));
+    }
+
+    queue *head_res = NULL;
+    queue *tail_res = NULL;
+
+    result(head, tail, head_res, tail_res);
+    while (head_res)
+        cout << char(pop(head_res, tail_res)) << " ";
+    cout << endl;
+
+    return 0;
+
+}