feat(content): function signatures + test cases

backend/data/questions/bitwise-and-of-numbers-range.yaml

@@ -8,6 +8,32 @@ categories:
 patterns:
   - binary-search
 
+function_signature: "def range_bitwise_and(left: int, right: int) -> int:"
+
+test_cases:
+  visible:
+    - input: { left: 5, right: 7 }
+      expected: 4
+    - input: { left: 0, right: 0 }
+      expected: 0
+    - input: { left: 1, right: 2147483647 }
+      expected: 0
+  hidden:
+    - input: { left: 1, right: 1 }
+      expected: 1
+    - input: { left: 10, right: 10 }
+      expected: 10
+    - input: { left: 0, right: 1 }
+      expected: 0
+    - input: { left: 12, right: 15 }
+      expected: 12
+    - input: { left: 8, right: 10 }
+      expected: 8
+    - input: { left: 1073741824, right: 2147483647 }
+      expected: 1073741824
+    - input: { left: 600000000, right: 600000001 }
+      expected: 600000000
+
 description: |
   Given two integers `left` and `right` that represent the range `[left, right]`, return *the bitwise AND of all numbers in this range, inclusive*.