20240831 finished.

src/problem/mod.rs

@@ -220,4 +220,5 @@ mod p698_partition_to_k_equal_sum_subsets;
 mod p3134_find_the_median_of_the_uniqueness_array;
 mod p3144_minimum_substring_partition_of_equal_character_frequency;
 mod p3142_check_if_grid_satisfies_conditions;
-mod p3153_sum_of_digit_differences_of_all_pairs;
+mod p3153_sum_of_digit_differences_of_all_pairs;
+mod p3127_make_a_square_with_the_same_color;

src/problem/p3127_make_a_square_with_the_same_color.rs

@@ -0,0 +1,45 @@
+/**
+ * [3127] Make a Square with the Same Color
+ */
+pub struct Solution {}
+
+
+// submission codes start here
+
+const DELTA: [(usize, usize); 4] = [(0, 0), (0, 1), (1, 0), (1, 1)];
+
+impl Solution {
+    pub fn can_make_square(grid: Vec<Vec<char>>) -> bool {
+        for i in 0..2 {
+            for j in 0.. 2 {
+                let mut white: i32 = 0;
+                let mut black: i32 = 0;
+                
+                for (x, y) in DELTA {
+                    match grid[i + x][j + y] {
+                        'B' => black += 1,
+                        'W' => white += 1,
+                        _ => {}
+                    }
+                }
+                
+                if white.abs_diff(black) == 2 || white.abs_diff(black) == 4 {
+                    return true;
+                }
+            }
+        }
+        
+        false
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_3127() {
+    }
+}