build

docs/chapter_dynamic_programming/knapsack_problem.md

@@ -321,6 +321,12 @@ $$
     }
     ```
 
+=== "Ruby"
+
+    ```ruby title="knapsack.rb"
+    [class]{}-[func]{knapsack_dfs}
+    ```
+
 === "Zig"
 
     ```zig title="knapsack.zig"
@@ -691,6 +697,12 @@ $$
     }
     ```
 
+=== "Ruby"
+
+    ```ruby title="knapsack.rb"
+    [class]{}-[func]{knapsack_dfs_mem}
+    ```
+
 === "Zig"
 
     ```zig title="knapsack.zig"
@@ -1049,6 +1061,12 @@ $$
     }
     ```
 
+=== "Ruby"
+
+    ```ruby title="knapsack.rb"
+    [class]{}-[func]{knapsack_dp}
+    ```
+
 === "Zig"
 
     ```zig title="knapsack.zig"
@@ -1435,6 +1453,12 @@ $$
     }
     ```
 
+=== "Ruby"
+
+    ```ruby title="knapsack.rb"
+    [class]{}-[func]{knapsack_dp_comp}
+    ```
+
 === "Zig"
 
     ```zig title="knapsack.zig"