Solved 0883

Author: guangsheng.li01

src/a0883_projection_area_of_3d_shapes.rs

@@ -0,0 +1,42 @@
+/*
+ * [0883] projection-area-of-3d-shapes
+ */
+
+pub struct Solution {}
+
+// solution impl starts here
+
+use std::cmp::max;
+impl Solution {
+    pub fn projection_area(grid: Vec<Vec<i32>>) -> i32 {
+        let mut area = 0;
+        let (mut max_row, mut max_col);
+        for i in 0..grid.len() {
+            max_row = 0;
+            max_col = 0;
+            for j in 0..grid.len() {
+                area += if grid[i][j] > 0 { 1 } else { 0 };
+                max_row = max(max_row, grid[i][j]);
+                max_col = max(max_col, grid[j][i]);
+            }
+            area += max_row + max_col;
+        }
+        area
+    }
+}
+
+// solution impl ends here
+
+// solution tests starts here
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_case0() {
+        assert_eq!(Solution::projection_area(vec![vec![2]]), 5);
+    }
+}
+
+// solution tests ends here

src/lib.rs

@@ -27,6 +27,7 @@ mod a0617_merge_two_binary_trees;
 mod a0643_maximum_average_subarray_i;
 mod a0646_maximum_length_of_pair_chain;
 mod a0867_transpose_matrix;
+mod a0883_projection_area_of_3d_shapes;
 mod a0929_unique_email_addresses;
 mod a0931_minimum_falling_path_sum;
 mod a0937_reorder_data_in_log_files;