20250101 finished.

src/problem/mod.rs

@@ -404,3 +404,5 @@ mod p1366_rank_teams_by_votes;
 mod p1367_linked_list_in_binary_tree;
 
 mod p3219_minimum_cost_for_cutting_cake_ii;
+
+mod p3280_convert_date_to_binary;

src/problem/p3280_convert_date_to_binary.rs

@@ -0,0 +1,49 @@
+/**
+ * [3280] Convert Date to Binary
+ */
+pub struct Solution {}
+
+// submission codes start here
+use std::str::FromStr;
+
+impl Solution {
+    pub fn convert_date_to_binary(date: String) -> String {
+        date.split('-')
+            .map(|x| u32::from_str(x).unwrap())
+            .map(|mut x| {
+                let mut result = vec![];
+
+                while x != 0 {
+                    result.push(x % 2);
+                    x = x / 2;
+                }
+
+                result
+                    .iter()
+                    .rev()
+                    .map(|c| c.to_string())
+                    .collect::<String>()
+            })
+            .reduce(|acc, e| acc + "-" + e.as_str())
+            .unwrap()
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_3280() {
+        assert_eq!(
+            "100000100000-10-11101".to_owned(),
+            Solution::convert_date_to_binary("2080-02-29".to_owned())
+        );
+        assert_eq!(
+            "11101101100-1-1".to_owned(),
+            Solution::convert_date_to_binary("1900-01-01".to_owned())
+        );
+    }
+}