feat(content): function signatures + test cases

backend/data/questions/bitwise-xor-of-all-pairings.yaml

@@ -9,6 +9,28 @@ categories:
 patterns:
   - greedy
 
+function_signature: "def xor_all_nums(nums1: list[int], nums2: list[int]) -> int:"
+
+test_cases:
+  visible:
+    - input: { nums1: [2, 1, 3], nums2: [10, 2, 5, 0] }
+      expected: 13
+    - input: { nums1: [1, 2], nums2: [3, 4] }
+      expected: 0
+  hidden:
+    - input: { nums1: [1], nums2: [1] }
+      expected: 0
+    - input: { nums1: [5], nums2: [3, 7] }
+      expected: 0
+    - input: { nums1: [1, 2, 3], nums2: [4] }
+      expected: 4
+    - input: { nums1: [0], nums2: [0, 0, 0] }
+      expected: 0
+    - input: { nums1: [1, 1], nums2: [2, 2] }
+      expected: 0
+    - input: { nums1: [7, 8, 9], nums2: [1, 2, 3] }
+      expected: 0
+
 description: |
   You are given two **0-indexed** arrays, `nums1` and `nums2`, consisting of non-negative integers.