Fix the inconsistency between src/lib.rs and new problem-solving files, and rustfmt everything

Author: mapx

src/lib.rs

@@ -186,11 +186,11 @@ mod n0215_kth_largest_element_in_an_array;
 mod n0216_combination_sum_iii;
 mod n0217_contains_duplicate;
 mod n0218_the_skyline_problem;
-mod n0220_contains_duplicate_iii;
 mod n0219_contains_duplicate_ii;
+mod n0220_contains_duplicate_iii;
 mod n0221_maximal_square;
-mod n0223_rectangle_area;
 mod n0222_count_complete_tree_nodes;
+mod n0223_rectangle_area;
 mod n0224_basic_calculator;
 mod n0225_implement_stack_using_queues;
 mod n0226_invert_binary_tree;
@@ -227,12 +227,14 @@ mod n0300_longest_increasing_subsequence;
 mod n0301_remove_invalid_parentheses;
 mod n0303_range_sum_query_immutable;
 mod n0304_range_sum_query_2d_immutable;
-mod n1009_pancake_sorting;
 mod n0306_additive_number;
 mod n0307_range_sum_query_mutable;
 mod n0309_best_time_to_buy_and_sell_stock_with_cooldown;
 mod n0310_minimum_height_trees;
 mod n0312_burst_balloons;
 mod n0313_super_ugly_number;
-mod n1013_fibonacci_number;
 mod n0792_binary_search;
+mod n1009_pancake_sorting;
+mod n1013_fibonacci_number;
+mod n1071_binary_prefix_divisible_by_5;
+mod n1127_last_stone_weight;

src/main.rs

@@ -7,20 +7,21 @@ mod problem;
 
 use std::env;
 use std::fs;
-use std::path::{Path};
-use std::io::Write;
 use std::io;
+use std::io::Write;
+use std::path::Path;
 
 /// main() helps to generate the submission template .rs
 fn main() {
     println!("Welcome to leetcode-rust system.");
     let mut solved_ids = get_solved_ids();
     loop {
-        println!("Please enter a problem id, or enter \"random\" to generate a random problem.");
+        println!("Please enter a frontend problem id, or \"random\" to generate a random one.");
         let mut is_random = false;
-        let mut id :u32 = 0;
+        let mut id: u32 = 0;
         let mut id_arg = String::new();
-        io::stdin().read_line(&mut id_arg)
+        io::stdin()
+            .read_line(&mut id_arg)
             .expect("Failed to read line");
         let id_arg = id_arg.trim();
         match id_arg {
@@ -29,23 +30,30 @@ fn main() {
                 id = generate_random_id(&solved_ids);
                 is_random = true;
                 println!("Generate random problem: {}", &id);
-            },
+            }
             _ => {
-                id = id_arg.parse::<u32>().expect(&format!("not a number: {}", id_arg));
+                id = id_arg
+                    .parse::<u32>()
+                    .expect(&format!("not a number: {}", id_arg));
                 if solved_ids.contains(&id) {
-                    println!("The problem you chose is invalid (the problem may have been solved \
-                              or may have no rust version).");
+                    println!(
+                        "The problem you chose is invalid (the problem may have been solved \
+                         or may have no rust version)."
+                    );
                     continue;
                 }
             }
         }
 
-        let problem = problem::get_problem(id)
-            .expect(&format!("Error: failed to get problem #{} \
-                              (The problem may be paid-only or may not be exist).",
-                             id));
-        let code = problem.code_definition.iter()
-            .filter(|&d| { d.value == "rust" })
+        let problem = problem::get_problem(id).expect(&format!(
+            "Error: failed to get problem #{} \
+             (The problem may be paid-only or may not be exist).",
+            id
+        ));
+        let code = problem
+            .code_definition
+            .iter()
+            .filter(|&d| d.value == "rust")
             .next();
         if code.is_none() {
             println!("Problem {} has no rust version.", &id);
@@ -54,7 +62,11 @@ fn main() {
         }
         let code = code.unwrap();
 
-        let file_name = format!("n{:04}_{}", problem.question_id, problem.title_slug.replace("-", "_"));
+        let file_name = format!(
+            "n{:04}_{}",
+            problem.question_id,
+            problem.title_slug.replace("-", "_")
+        );
         let file_path = Path::new("./src").join(format!("{}.rs", file_name));
         if file_path.exists() {
             panic!("problem already initialized");
@@ -88,17 +100,20 @@ fn main() {
     }
 }
 
-fn generate_random_id(except_ids : &Vec<u32>) -> u32 {
-    use std::fs;
+fn generate_random_id(except_ids: &Vec<u32>) -> u32 {
     use rand::Rng;
+    use std::fs;
     let mut rng = rand::thread_rng();
     loop {
-        let res :u32 = rng.gen_range(1, 1106);
+        let res: u32 = rng.gen_range(1, 1106);
         if !except_ids.contains(&res) {
             return res;
         }
-        println!("Generate a random num ({}), but it is invalid (the problem may have been solved \
-                  or may have no rust version). Regenerate..", res);
+        println!(
+            "Generate a random num ({}), but it is invalid (the problem may have been solved \
+             or may have no rust version). Regenerate..",
+            res
+        );
     }
 }
 

src/n0001_two_sum.rs

@@ -26,8 +26,10 @@ impl Solution {
         let mut map = HashMap::with_capacity(nums.len());
         for (index, num) in nums.iter().enumerate() {
             match map.get(&(target - num)) {
-                None => { map.insert(num, index); },
-                Some(sub_index) => { return vec![*sub_index as i32, index as i32] },
+                None => {
+                    map.insert(num, index);
+                }
+                Some(sub_index) => return vec![*sub_index as i32, index as i32],
             }
         }
         vec![]

src/n0002_add_two_numbers.rs

@@ -4,10 +4,10 @@
  * You are given two non-empty linked lists representing two non-negative
  * integers. The digits are stored in reverse order and each of their nodes
  * contain a single digit. Add the two numbers and return it as a linked list.
- * 
+ *
  * You may assume the two numbers do not contain any leading zero, except the
  * number 0 itself.
- * 
+ *
  * Example:
  *
  *
@@ -17,31 +17,52 @@
  *
  */
 pub struct Solution {}
-use super::util::linked_list::{ListNode, to_list};
+use super::util::linked_list::{to_list, ListNode};
 
 // submission codes start here
 
 impl Solution {
-    pub fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
+    pub fn add_two_numbers(
+        l1: Option<Box<ListNode>>,
+        l2: Option<Box<ListNode>>,
+    ) -> Option<Box<ListNode>> {
         let (mut l1, mut l2) = (l1, l2);
         let mut dummy_head = Some(Box::new(ListNode::new(0)));
         let mut tail = &mut dummy_head;
         let (mut l1_end, mut l2_end, mut overflow) = (false, false, false);
         loop {
             let lhs = match l1 {
-                Some(node) => { l1 = node.next; node.val },
-                None => { l1_end = true; 0 },
+                Some(node) => {
+                    l1 = node.next;
+                    node.val
+                }
+                None => {
+                    l1_end = true;
+                    0
+                }
             };
             let rhs = match l2 {
-                Some(node) => { l2 = node.next; node.val },
-                None => { l2_end = true; 0 }
+                Some(node) => {
+                    l2 = node.next;
+                    node.val
+                }
+                None => {
+                    l2_end = true;
+                    0
+                }
             };
             // if l1, l2 end and there is not overflow from previous operation, return the result
             if l1_end && l2_end && !overflow {
-                break dummy_head.unwrap().next
+                break dummy_head.unwrap().next;
             }
             let sum = lhs + rhs + if overflow { 1 } else { 0 };
-            let sum = if sum >= 10 { overflow = true; sum - 10 } else { overflow = false; sum };
+            let sum = if sum >= 10 {
+                overflow = true;
+                sum - 10
+            } else {
+                overflow = false;
+                sum
+            };
             tail.as_mut().unwrap().next = Some(Box::new(ListNode::new(sum)));
             tail = &mut tail.as_mut().unwrap().next
         }
@@ -50,17 +71,25 @@ impl Solution {
 
 // submission codes end
 
-
 #[cfg(test)]
 mod tests {
     use super::*;
 
     #[test]
     fn test_2() {
-        assert_eq!(Solution::add_two_numbers(to_list(vec![2, 4, 3]), to_list(vec![5, 6, 4])), to_list(vec![7, 0, 8]));
+        assert_eq!(
+            Solution::add_two_numbers(to_list(vec![2, 4, 3]), to_list(vec![5, 6, 4])),
+            to_list(vec![7, 0, 8])
+        );
 
-        assert_eq!(Solution::add_two_numbers(to_list(vec![9, 9, 9, 9]), to_list(vec![9, 9, 9, 9, 9, 9])), to_list(vec![8, 9, 9, 9, 0, 0, 1]));
+        assert_eq!(
+            Solution::add_two_numbers(to_list(vec![9, 9, 9, 9]), to_list(vec![9, 9, 9, 9, 9, 9])),
+            to_list(vec![8, 9, 9, 9, 0, 0, 1])
+        );
 
-        assert_eq!(Solution::add_two_numbers(to_list(vec![0]), to_list(vec![0])), to_list(vec![0]))
+        assert_eq!(
+            Solution::add_two_numbers(to_list(vec![0]), to_list(vec![0])),
+            to_list(vec![0])
+        )
     }
 }

src/n0003_longest_substring.rs

@@ -24,11 +24,13 @@ impl Solution {
             for idx in start..end {
                 if seq[end] == seq[idx] {
                     start = idx + 1;
-                    break
+                    break;
                 }
             }
             let curr = end - start + 1;
-            if curr > max { max = curr }
+            if curr > max {
+                max = curr
+            }
             end += 1
         }
         max as i32
@@ -43,8 +45,14 @@ mod tests {
 
     #[test]
     fn test_3() {
-        assert_eq!(Solution::length_of_longest_substring("abcabcbb".to_string()), 3);
+        assert_eq!(
+            Solution::length_of_longest_substring("abcabcbb".to_string()),
+            3
+        );
         assert_eq!(Solution::length_of_longest_substring("bbbb".to_string()), 1);
-        assert_eq!(Solution::length_of_longest_substring("pwwkew".to_string()), 3);
+        assert_eq!(
+            Solution::length_of_longest_substring("pwwkew".to_string()),
+            3
+        );
     }
 }

src/n0004_median_of_two_sorted_arrays.rs

@@ -2,29 +2,29 @@
  * [4] Median of Two Sorted Arrays
  *
  * There are two sorted arrays nums1 and nums2 of size m and n respectively.
- * 
+ *
  * Find the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)).
- * 
+ *
  * You may assume nums1 and nums2 cannot be both empty.
- * 
+ *
  * Example 1:
- * 
+ *
  *
  * nums1 = [1, 3]
  * nums2 = [2]
- * 
+ *
  * The median is 2.0
- * 
- * 
+ *
+ *
  * Example 2:
- * 
- * 
+ *
+ *
  * nums1 = [1, 2]
  * nums2 = [3, 4]
- * 
+ *
  * The median is (2 + 3)/2 = 2.5
- * 
- * 
+ *
+ *
  */
 pub struct Solution {}
 
@@ -47,7 +47,13 @@ mod tests {
     #[test]
     #[ignore]
     fn test_4() {
-        assert_eq!(Solution::find_median_sorted_arrays(vec![1, 3], vec![2]), 2.0);
-        assert_eq!(Solution::find_median_sorted_arrays(vec![1, 2], vec![3, 4]), 2.5);
+        assert_eq!(
+            Solution::find_median_sorted_arrays(vec![1, 3], vec![2]),
+            2.0
+        );
+        assert_eq!(
+            Solution::find_median_sorted_arrays(vec![1, 2], vec![3, 4]),
+            2.5
+        );
     }
 }