20250519 finished.

src/problem/mod.rs

@@ -662,3 +662,5 @@ mod p2901_longest_unequal_adjacent_groups_subsequence_ii;
 mod p75_sort_colors;
 
 mod p1931_painting_a_grid_with_three_different_colors;
+
+mod p3024_type_of_triangle;

src/problem/p3024_type_of_triangle.rs

@@ -0,0 +1,40 @@
+/**
+ * [3024] Type of Triangle
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn triangle_type(nums: Vec<i32>) -> String {
+        if nums[0] + nums[1] <= nums[2]
+            || nums[0] + nums[2] <= nums[1]
+            || nums[1] + nums[2] <= nums[0]
+        {
+            return "none".to_string();
+        }
+
+        if nums[0] == nums[1] || nums[0] == nums[2] || nums[1] == nums[2] {
+            if nums[0] == nums[1] && nums[1] == nums[2] {
+                "equilateral".to_string()
+            } else {
+                "isosceles".to_string()
+            }
+        } else {
+            "scalene".to_string()
+        }
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_3024() {
+        assert_eq!("equilateral", Solution::triangle_type(vec![3, 3, 3]));
+        assert_eq!("scalene", Solution::triangle_type(vec![3, 4, 5]));
+    }
+}