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β€ŽREADME.md

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LeetCode is a website that has programming-related questions that are designed to be solved in a limited amount of time. This repository is a collection of some of my solutions written in [Rust](https://www.rust-lang.org/).
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## Solutions (76)
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## Solutions (80)
1010
| No. | Title | Solution | Problem | Difficulty |
1111
|:---:|:------|:--------:|:-------:|:----------:|
1212
| 1 | Two Sum | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/two_sum.rs) | [Leetcode](https://leetcode.com/problems/two-sum/) | Easy |
@@ -49,6 +49,7 @@ LeetCode is a website that has programming-related questions that are designed t
4949
| 463 | Island Perimeter | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/island_perimeter.rs) | [Leetcode](https://leetcode.com/problems/island-perimeter/) | Easy |
5050
| 485 | Max Consecutive Ones | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/find_max_consecutive_ones.rs) | [Leetcode](https://leetcode.com/problems/max-consecutive-ones/) | Easy |
5151
| 495 | Teemo Attacking | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/find_poisoned_duration.rs) | [Leetcode](https://leetcode.com/problems/teemo-attacking/) | Easy |
52+
| 547 | Number of Provinces | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/interview/amazon/find_circle_num.rs) | [Leetcode](https://leetcode.com/problems/number-of-provinces/) | Medium |
5253
| 698 | Partition to K Equal Sum Subsets | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/can_partition_k_subsets.rs) | [Leetcode](https://leetcode.com/problems/partition-to-k-equal-sum-subsets/) | Medium |
5354
| 713 | Subarray Product Less Than K | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/num_subarray_product_less_than_k.rs) | [Leetcode](https://leetcode.com/problems/subarray-product-less-than-k/) | Medium |
5455
| 725 | Split Linked List in Parts | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/split_list_to_parts.rs) | [Leetcode](https://leetcode.com/problems/split-linked-list-in-parts/) | Medium |
@@ -68,7 +69,9 @@ LeetCode is a website that has programming-related questions that are designed t
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| 1137 | N-th Tribonacci Number | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/tribonacci.rs) | [Leetcode](https://leetcode.com/problems/n-th-tribonacci-number/) | Easy |
6970
| 1143 | Longest Common Subsequence | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/longest_common_subsequence.rs) | [Leetcode](https://leetcode.com/problems/longest-common-subsequence/) | Medium |
7071
| 1161 | Maximum Level Sum of a Binary Tree | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/max_level_sum.rs) | [Leetcode](https://leetcode.com/problems/maximum-level-sum-of-a-binary-tree/) | Medium |
72+
| 1167 | Minimum Cost to Connect Sticks | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/interview/amazon/connect_sticks.rs) | [Leetcode](https://leetcode.com/problems/minimum-cost-to-connect-sticks/) | Medium |
7173
| 1239 | Maximum Length of a Concatenated String with Unique Characters | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/max_length.rs) | [Leetcode](https://leetcode.com/problems/maximum-length-of-a-concatenated-string-with-unique-characters/) | Medium |
74+
| 1268 | Search Suggestions System | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/interview/amazon/suggested_products.rs) | [Leetcode](https://leetcode.com/problems/search-suggestions-system/) | Medium |
7275
| 1275 | Find Winner on a Tic Tac Toe Game | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/tictactoe.rs) | [Leetcode](https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game/) | Easy |
7376
| 1293 | Shortest Path in a Grid with Obstacles Elimination | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/challenge/shortest_path.rs) | [Leetcode](https://leetcode.com/problems/shortest-path-in-a-grid-with-obstacles-elimination/) | Hard |
7477
| 1315 | Sum of Nodes with Even-Valued Grandparent | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/sum_even_grandparent.rs) | [Leetcode](https://leetcode.com/problems/sum-of-nodes-with-even-valued-grandparent/) | Medium |
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| 1457 | Pseudo-Palindromic Paths in a Binary Tree | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/pseudo_palindromic_paths.rs) | [Leetcode](https://leetcode.com/problems/pseudo-palindromic-paths-in-a-binary-tree/) | Easy |
7881
| 1570 | Dot Product of Two Sparse Vectors | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/dot_product.rs) | [Leetcode](https://leetcode.com/problems/dot-product-of-two-sparse-vectors/) | Medium |
7982
| 1604 | Alert Using Same Key-Card Three or More Times in a One Hour Period | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/interview/robinhood/alert_names.rs) | [Leetcode](https://leetcode.com/problems/alert-using-same-key-card-three-or-more-times-in-a-one-hour-period/) | Medium |
83+
| 1710 | Maximum Units on a Truck | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/interview/amazon/maximum_units.rs) | [Leetcode](https://leetcode.com/problems/maximum-units-on-a-truck/) | Easy |
8084
| 1801 | Number of Orders in the Backlog | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/get_number_of_backlog_orders.rs) | [Leetcode](https://leetcode.com/problems/number-of-orders-in-the-backlog/) | Medium |
8185
| 1962 | Remove Stones to Minimize the Total | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/problem/min_stone_sum.rs) | [Leetcode](https://leetcode.com/problems/remove-stones-to-minimize-the-total/) | Medium |
8286
| 2022 | Convert 1D Array Into 2D Array | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/biweekly_62.rs) | [Leetcode](https://leetcode.com/problems/convert-1d-array-into-2d-array/) | Easy |
8387
| 2023 | Number of Pairs of Strings With Concatenation Equal to Target | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/biweekly_62.rs) | [Leetcode](https://leetcode.com/problems/number-of-pairs-of-strings-with-concatenation-equal-to-target/) | Medium |
8488
| 2024 | Maximize the Confusion of an Exam | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/biweekly_62.rs) | [Leetcode](https://leetcode.com/problems/maximize-the-confusion-of-an-exam/) | Medium |
8589
| 2025 | Maximum Number of Ways to Partition an Array | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/biweekly_62.rs) | [Leetcode](https://leetcode.com/problems/maximum-number-of-ways-to-partition-an-array/) | Hard |
8690
| 2027 | Minimum Moves to Convert String | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/weekly_261.rs) | [Leetcode](https://leetcode.com/problems/minimum-moves-to-convert-string/) | Easy |
87-
| 2028 | Find Missing Observations | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/weekly_261.rs) | [Leetcode](https://leetcode.com/problems/find-missing-observations/) | Medium |
91+
| 2028 | Find Missing Observations | [Rust](https://github.com/martinxxd/leetcode-rust/tree/master/./src/leetcode/contest/weekly_261.rs) | [Leetcode](https://leetcode.com/problems/find-missing-observations/) | Medium |
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use std::collections::BinaryHeap;
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// 1167. Minimum Cost to Connect Sticks, Medium
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// https://leetcode.com/problems/minimum-cost-to-connect-sticks/
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impl Solution {
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pub fn connect_sticks(sticks: Vec<i32>) -> i32 {
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let sticks = sticks.iter().map(|x| -x).collect::<Vec<i32>>();
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let mut sticks_heap = BinaryHeap::from(sticks);
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let mut cost = 0;
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while sticks_heap.len() > 1 {
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let stick = sticks_heap.pop().unwrap() + sticks_heap.pop().unwrap();
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sticks_heap.push(stick);
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cost += -stick;
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}
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cost
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}
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}
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struct Solution {}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::vec_vec_i32;
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#[test]
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fn test_connect_sticks() {
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assert_eq!(Solution::connect_sticks(vec![2, 4, 3]), 14);
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}
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#[test]
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fn test_connect_sticks2() {
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assert_eq!(Solution::connect_sticks(vec![1, 8, 3, 5]), 30);
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}
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}
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// 547. Number of Provinces, Medium
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// https://leetcode.com/problems/number-of-provinces/
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impl Solution {
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pub fn find_circle_num(mut is_connected: Vec<Vec<i32>>) -> i32 {
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let n = is_connected.len();
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let mut provinces = 0;
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fn bfs(i: usize, is_connected: &mut Vec<Vec<i32>>) {
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let edges = is_connected[i].clone();
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is_connected[i] = vec![];
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for (i, is_edge) in edges.iter().enumerate() {
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if *is_edge == 1 {
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bfs(i as usize, is_connected);
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}
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}
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}
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for i in 0..n {
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if is_connected[i].len() > 0 {
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provinces += 1;
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}
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bfs(i, &mut is_connected);
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}
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provinces
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}
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}
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struct Solution {}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::vec_vec_i32;
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#[test]
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fn test_find_circle_num() {
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assert_eq!(Solution::find_circle_num(vec_vec_i32![[1, 1, 0], [1, 1, 0], [0, 0, 1]]), 2);
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}
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#[test]
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fn test_find_circle_num2() {
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assert_eq!(Solution::find_circle_num(vec_vec_i32![[1, 0, 0], [0, 1, 0], [0, 0, 1]]), 3);
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}
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}
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// 1710. Maximum Units on a Truck, Easy
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// https://leetcode.com/problems/maximum-units-on-a-truck/
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impl Solution {
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pub fn maximum_units(mut box_types: Vec<Vec<i32>>, mut truck_size: i32) -> i32 {
5+
box_types.sort_unstable_by(|a, b| b[1].cmp(&a[1]));
6+
7+
let mut loaded_boxes = 0;
8+
9+
for box_type in box_types {
10+
if truck_size > box_type[0] {
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truck_size -= box_type[0];
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loaded_boxes += box_type[0] * box_type[1];
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} else {
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loaded_boxes += truck_size * box_type[1];
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return loaded_boxes;
16+
}
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}
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loaded_boxes
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}
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}
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struct Solution {}
24+
25+
#[cfg(test)]
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mod tests {
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use super::*;
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use crate::vec_vec_i32;
29+
30+
#[test]
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fn test_maximum_units() {
32+
assert_eq!(Solution::maximum_units(vec_vec_i32![[1, 3], [2, 2], [3, 1]], 4), 8);
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}
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#[test]
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fn test_maximum_units2() {
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assert_eq!(Solution::maximum_units(vec_vec_i32![[5, 10], [2, 5], [4, 7], [3, 9]], 10), 91);
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}
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}
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// 1268. Search Suggestions System, Medium
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// https://leetcode.com/problems/search-suggestions-system/
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impl Solution {
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pub fn suggested_products(products: Vec<String>, search_word: String) -> Vec<Vec<String>> {
5+
let mut suggested_products = vec![];
6+
for i in 0..search_word.len() {
7+
println!("{}", &search_word[..i + 1]);
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let mut filtered = products
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.iter()
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.filter(|p| p.starts_with(&search_word[..i + 1]))
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.map(|p| p.to_string())
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.collect::<Vec<String>>();
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filtered.sort();
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suggested_products.push(filtered.iter().take(3).cloned().collect::<Vec<String>>());
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}
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suggested_products
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}
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}
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struct Solution {}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::{vec_string, vec_vec_string};
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#[test]
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fn test_suggested_products() {
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assert_eq!(
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Solution::suggested_products(vec_string!["mobile", "mouse", "moneypot", "monitor", "mousepad"], "mouse".to_string()),
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vec_vec_string![
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["mobile", "moneypot", "monitor"],
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["mobile", "moneypot", "monitor"],
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["mouse", "mousepad"],
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["mouse", "mousepad"],
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["mouse", "mousepad"]
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]
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);
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}
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#[test]
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fn test_suggested_products2() {
45+
assert_eq!(
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Solution::suggested_products(vec_string!["havana"], "havana".to_string()),
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vec_vec_string![["havana"], ["havana"], ["havana"], ["havana"], ["havana"], ["havana"]]
48+
);
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}
50+
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#[test]
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fn test_suggested_products3() {
53+
assert_eq!(
54+
Solution::suggested_products(vec_string!["bags", "baggage", "banner", "box", "cloths"], "bags".to_string()),
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vec_vec_string![["baggage", "bags", "banner"], ["baggage", "bags", "banner"], ["baggage", "bags"], ["bags"]]
56+
);
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}
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#[test]
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fn test_suggested_products4() {
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assert_eq!(
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Solution::suggested_products(vec_string!["havana"], "tatiana".to_string()),
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vec_vec_string![[], [], [], [], [], [], []]
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);
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}
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}

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