addition: add row and column

src/lib.rs

@@ -157,6 +157,34 @@ impl Matrix {
         None
     }
 
+    pub fn add_column(&mut self, data: Vec<Fraction>) -> Option<MatrixError> {
+        if data.len() != self.columns {
+            return Some(MatrixError::InvalidDataSize);
+        }
+
+        for i in 0..data.len() {
+            self.data.insert((i * self.rows) + self.rows - 1, data[i]);
+        }
+
+        self.columns += 1;
+
+        None
+    }
+
+    pub fn add_row(&mut self, data: Vec<Fraction>) -> Option<MatrixError> {
+        if data.len() != self.rows {
+            return Some(MatrixError::InvalidDataSize);
+        }
+
+        for i in 0..data.len() {
+            self.data.push(data[i]);
+        }
+
+        self.rows += 1;
+
+        None
+    }
+
     fn partial_pivoting(&mut self, col: usize, sign: &mut Fraction) -> Result<bool, MatrixError> {
         if col >= self.columns {
             return Err(MatrixError::ColumnOutOfRange);