feat: update rust solution to lc problem: No.106 (doocs#2362)

Author: yanglbme

solution/0100-0199/0106.Construct Binary Tree from Inorder and Postorder Traversal/README.md

@@ -249,7 +249,6 @@ impl Solution {
             d.insert(inorder[i], i);
         }
         fn dfs(
-            inorder: &[i32],
             postorder: &[i32],
             d: &HashMap<i32, usize>,
             i: usize,
@@ -259,13 +258,13 @@ impl Solution {
             if n <= 0 {
                 return None;
             }
-            let v = postorder[j + n - 1];
-            let k = *d.get(&v).unwrap();
-            let l = dfs(inorder, postorder, d, i, j, k - i);
-            let r = dfs(inorder, postorder, d, k + 1, j + k - i, n - 1 - (k - i));
-            Some(Rc::new(RefCell::new(TreeNode { val: v, left: l, right: r })))
+            let val = postorder[j + n - 1];
+            let k = *d.get(&val).unwrap();
+            let left = dfs(postorder, d, i, j, k - i);
+            let right = dfs(postorder, d, k + 1, j + k - i, n - 1 - (k - i));
+            Some(Rc::new(RefCell::new(TreeNode { val, left, right })))
         }
-        dfs(&inorder, &postorder, &d, 0, 0, n)
+        dfs(&postorder, &d, 0, 0, n)
     }
 }
 ```

solution/0100-0199/0106.Construct Binary Tree from Inorder and Postorder Traversal/README_EN.md

@@ -245,7 +245,6 @@ impl Solution {
             d.insert(inorder[i], i);
         }
         fn dfs(
-            inorder: &[i32],
             postorder: &[i32],
             d: &HashMap<i32, usize>,
             i: usize,
@@ -255,13 +254,13 @@ impl Solution {
             if n <= 0 {
                 return None;
             }
-            let v = postorder[j + n - 1];
-            let k = *d.get(&v).unwrap();
-            let l = dfs(inorder, postorder, d, i, j, k - i);
-            let r = dfs(inorder, postorder, d, k + 1, j + k - i, n - 1 - (k - i));
-            Some(Rc::new(RefCell::new(TreeNode { val: v, left: l, right: r })))
+            let val = postorder[j + n - 1];
+            let k = *d.get(&val).unwrap();
+            let left = dfs(postorder, d, i, j, k - i);
+            let right = dfs(postorder, d, k + 1, j + k - i, n - 1 - (k - i));
+            Some(Rc::new(RefCell::new(TreeNode { val, left, right })))
         }
-        dfs(&inorder, &postorder, &d, 0, 0, n)
+        dfs(&postorder, &d, 0, 0, n)
     }
 }
 ```

solution/0100-0199/0106.Construct Binary Tree from Inorder and Postorder Traversal/Solution.rs

@@ -27,7 +27,6 @@ impl Solution {
             d.insert(inorder[i], i);
         }
         fn dfs(
-            inorder: &[i32],
             postorder: &[i32],
             d: &HashMap<i32, usize>,
             i: usize,
@@ -37,12 +36,12 @@ impl Solution {
             if n <= 0 {
                 return None;
             }
-            let v = postorder[j + n - 1];
-            let k = *d.get(&v).unwrap();
-            let l = dfs(inorder, postorder, d, i, j, k - i);
-            let r = dfs(inorder, postorder, d, k + 1, j + k - i, n - 1 - (k - i));
-            Some(Rc::new(RefCell::new(TreeNode { val: v, left: l, right: r })))
+            let val = postorder[j + n - 1];
+            let k = *d.get(&val).unwrap();
+            let left = dfs(postorder, d, i, j, k - i);
+            let right = dfs(postorder, d, k + 1, j + k - i, n - 1 - (k - i));
+            Some(Rc::new(RefCell::new(TreeNode { val, left, right })))
         }
-        dfs(&inorder, &postorder, &d, 0, 0, n)
+        dfs(&postorder, &d, 0, 0, n)
     }
 }

solution/util.py

@@ -181,9 +181,7 @@ def generate_question_readme(result):
 def generate_category_summary(result, category=""):
     """generate category summary files"""
     summary_cn = (
-        "- " + category_dict.get(category, category) + "专项练习\n\n"
-        if category
-        else ""
+        "- " + category_dict.get(category, category) + "专项练习\n\n" if category else ""
     )
     summary_en = "- " + category + " Practice\n\n" if category else ""
     category = category.lower() if category else ""
@@ -308,9 +306,7 @@ def refresh(result):
             )
 
         # update question content
-        old_content = re.search(
-            "<!-- 这里写题目描述 -->(.*?)## 解法", cn_content, re.S
-        ).group(1)
+        old_content = re.search("<!-- 这里写题目描述 -->(.*?)## 解法", cn_content, re.S).group(1)
         if question.get("content_cn"):
             cn_content = cn_content.replace(
                 old_content, "\n\n" + question["content_cn"] + "\n\n"