Solve Problem 2490. Circular Sentence

README.md

@@ -368,6 +368,7 @@ LeetSpace serves as a dedicated workspace and archive for my [LeetCode](https://
 | [2485. Find the Pivot Integer](https://leetcode.com/problems/find-the-pivot-integer/) | Easy | [C](./old-problems/2485/c/solution.c) [C++](./old-problems/2485/solution.cpp) |
 | [2486. Append Characters to String to Make Subsequence](https://leetcode.com/problems/append-characters-to-string-to-make-subsequence/) | Medium | [C](./old-problems/2486/c/solution.c) [C++](./old-problems/2486/solution.cpp) |
 | [2487. Remove Nodes From Linked List](https://leetcode.com/problems/remove-nodes-from-linked-list/) | Medium | [C++](./old-problems/2487/solution.cpp) |
+| [2490. Circular Sentence](https://leetcode.com/problems/circular-sentence/) | Easy | [C++](./old-problems/2490/solution.cpp) |
 | [2497. Maximum Star Sum of a Graph](https://leetcode.com/problems/maximum-star-sum-of-a-graph/) | Medium | [C++](./old-problems/2497/solution.cpp) |
 | [2511. Maximum Enemy Forts That Can Be Captured](https://leetcode.com/problems/maximum-enemy-forts-that-can-be-captured/) | Easy | [C](./old-problems/2511/c/solution.c) [C++](./old-problems/2511/solution.cpp) |
 | [2525. Categorize Box According to Criteria](https://leetcode.com/problems/categorize-box-according-to-criteria/) | Easy | [C](./old-problems/2525/c/solution.c) [C++](./old-problems/2525/solution.cpp) |

old-problems/2490/CMakeLists.txt

@@ -0,0 +1,2 @@
+get_dir_name(id)
+add_problem_test(test-${id} test.yaml)

old-problems/2490/solution.cpp

@@ -0,0 +1,14 @@
+#include <string>
+
+class Solution {
+ public:
+  bool isCircularSentence(std::string sentence) {
+    if (sentence.front() != sentence.back()) return false;
+    for (int i = sentence.size() - 2; i > 0; --i) {
+      if (sentence[i] == ' ' && sentence[i - 1] != sentence[i + 1]) {
+        return false;
+      }
+    }
+    return true;
+  }
+};

old-problems/2490/test.yaml

@@ -0,0 +1,26 @@
+name: 2490. Circular Sentence
+
+types:
+  inputs:
+    sentence: std::string
+  output: bool
+
+solutions:
+  cpp:
+    function: isCircularSentence
+
+test_cases:
+  example_1:
+    inputs:
+      sentence: leetcode exercises sound delightful
+    output: true
+
+  example_2:
+    inputs:
+      sentence: eetcode
+    output: true
+
+  example_3:
+    inputs:
+      sentence: Leetcode is cool
+    output: false