Vertices added to graph

src/prob8.rs

@@ -0,0 +1,33 @@
+use petgraph::prelude::*;
+use petgraph::matrix_graph::MatrixGraph;
+
+pub fn solve_part1(content: &str) -> color_eyre::Result<u32> {
+    let (n_line, numbers) = {
+        let mut num_rows = 0_usize;
+        let mut inner_number = Vec::<u32>::new();
+        content.lines().for_each(|line| {
+            let mut line_numbers = line
+                .chars()
+                .map(|c| c.to_digit(10).unwrap())
+                .collect::<Vec<u32>>();
+            inner_number.append(&mut line_numbers);
+            num_rows += 1;
+        });
+        (num_rows, inner_number)
+    };
+    let m_element = numbers.len() / n_line;
+    let _visible_border = (m_element + n_line) * 2 - 4;
+
+    let num_slice = numbers.as_slice();
+    let mut node_indices = vec![NodeIndex::<u16>::default(); num_slice.len()];
+    let idx_slice = node_indices.as_mut_slice();
+    let mut graph = MatrixGraph::<u32, u32, Directed>::with_capacity(m_element * n_line);
+    for j in 0..n_line {
+        for i in 0..m_element {
+            let idx = j * m_element + i;
+            idx_slice[idx] = graph.add_node(num_slice[idx]);
+        }
+    }
+
+    Ok(0)
+}