20250112 finished.

src/problem/mod.rs

@@ -426,3 +426,5 @@ mod p3297_count_substrings_that_can_be_rearranged_to_contain_a_string_i;
 mod p3298_count_substrings_that_can_be_rearranged_to_contain_a_string_ii;
 
 mod p3270_find_the_key_of_the_numbers;
+
+mod p2275_largest_combination_with_bitwise_and_greater_than_zero;

src/problem/p2275_largest_combination_with_bitwise_and_greater_than_zero.rs

@@ -0,0 +1,39 @@
+/**
+ * [2275] Largest Combination With Bitwise AND Greater Than Zero
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn largest_combination(candidates: Vec<i32>) -> i32 {
+        let mut result = 0;
+
+        for i in 0..31 {
+            result = result.max(
+                candidates
+                    .iter()
+                    .filter_map(|&x| if x & (1 << i) > 0 { Some(()) } else { None })
+                    .count(),
+            );
+        }
+
+        result as i32
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_2275() {
+        assert_eq!(
+            4,
+            Solution::largest_combination(vec![16, 17, 71, 62, 12, 24, 14])
+        );
+        assert_eq!(2, Solution::largest_combination(vec![8, 8]));
+    }
+}