20250120 finished.

src/problem/mod.rs

@@ -442,3 +442,5 @@ mod p3097_shortest_subarray_with_or_at_least_k_ii;
 mod p3287_find_the_maximum_sequence_value_of_array;
 
 mod p2266_count_number_of_texts;
+
+mod p2239_find_closest_number_to_zero;

src/problem/p2239_find_closest_number_to_zero.rs

@@ -0,0 +1,34 @@
+/**
+ * [2239] Find Closest Number to Zero
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn find_closest_number(nums: Vec<i32>) -> i32 {
+        nums.into_iter().fold(i32::MAX, |acc, v| {
+            if v.abs() < acc.abs() {
+                v
+            } else if v.abs() == acc.abs() && v > acc {
+                v
+            } else {
+                acc
+            }
+        })
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_2239() {
+        assert_eq!(-1, Solution::find_closest_number(vec![-1, -1]));
+        assert_eq!(1, Solution::find_closest_number(vec![-4, -2, 1, 4, 8]));
+        assert_eq!(1, Solution::find_closest_number(vec![-2, -1, 1]));
+    }
+}