feat: 3484_design_spread_sheet

3484_design_spread_sheet/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "design_spread_sheet"
+version = "0.1.0"

3484_design_spread_sheet/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "design_spread_sheet"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

3484_design_spread_sheet/src/lib.rs

@@ -0,0 +1,41 @@
+pub struct Spreadsheet {
+    cells: Vec<i32>,
+}
+
+impl Spreadsheet {
+    pub fn new(rows: i32) -> Self {
+        Self {
+            cells: vec![0; rows as usize * 26],
+        }
+    }
+
+    pub fn set_cell(&mut self, cell: String, value: i32) {
+        let index = Spreadsheet::count_index(&cell);
+        self.cells[index] = value;
+    }
+
+    pub fn reset_cell(&mut self, cell: String) {
+        self.set_cell(cell, 0);
+    }
+
+    pub fn get_value(&self, formula: String) -> i32 {
+        let mut result = 0;
+
+        for cell in formula[1..].split('+') {
+            if let Ok(val) = cell.parse::<i32>() {
+                result += val
+            } else {
+                let index = Spreadsheet::count_index(cell);
+                result += self.cells[index];
+            }
+        }
+
+        result
+    }
+
+    fn count_index(cell: &str) -> usize {
+        let col = (cell[..1].as_bytes()[0] - b'A') as usize;
+        let row = cell[1..].parse::<usize>().unwrap() - 1;
+        row * 26 + col
+    }
+}