- 1401. Circle and Rectangle Overlapping 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Math 🔗
- Geometry 🔗
|
|
- 1402. Reducing Dishes 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
- Greedy 🔗
- Sorting 🔗
|
|
- 1403. Minimum Subsequence in Non-Increasing Order 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
- Greedy 🔗
- Sorting 🔗
|
- 2210. Count Hills and Valleys in an Array 🔗 📝
|
- 1404. Number of Steps to Reduce a Number in Binary Representation to One 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- String 🔗
- Bit Manipulation 🔗
|
- 2139. Minimum Moves to Reach Target Score 🔗 📝
|
- 1405. Longest Happy String 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- String 🔗
- Greedy 🔗
- Heap (Priority Queue) 🔗
|
- 767. Reorganize String 🔗 📝
|
- 1406. Stone Game III 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Math 🔗
- Dynamic Programming 🔗
- Game Theory 🔗
|
- 1563. Stone Game V 🔗 📝
- 1686. Stone Game VI 🔗 📝
- 1690. Stone Game VII 🔗 📝
- 1872. Stone Game VIII 🔗 📝
- 2029. Stone Game IX 🔗 📝
|
- 1407. Top Travellers 🔗 📝
|
🆓 |
|
⭐️ |
- Database 🔗
|
|
- 1408. String Matching in an Array 🔗 📝
|
🆓 |
|
⭐️ |
- Array 🔗
- String 🔗
- String Matching 🔗
|
|
- 1409. Queries on a Permutation With Key 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Binary Indexed Tree 🔗
- Simulation 🔗
|
|
- 1410. HTML Entity Parser 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Hash Table 🔗
- String 🔗
|
|
- 1411. Number of Ways to Paint N × 3 Grid 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Dynamic Programming 🔗
|
- 1931. Painting a Grid With Three Different Colors 🔗 📝
|
- 1412. Find the Quiet Students in All Exams 🔗 📝
|
💰 |
|
⭐️⭐️⭐️ |
- Database 🔗
|
|
- 1413. Minimum Value to Get Positive Step by Step Sum 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
- Prefix Sum 🔗
|
|
- 1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Greedy 🔗
|
|
- 1415. The k-th Lexicographical String of All Happy Strings of Length n 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- String 🔗
- Backtracking 🔗
|
|
- 1416. Restore The Array 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- String 🔗
- Dynamic Programming 🔗
|
- 1977. Number of Ways to Separate Numbers 🔗 📝
|
- 1417. Reformat The String 🔗 📝
|
🆓 |
✅ |
⭐️ |
- String 🔗
|
|
- 1418. Display Table of Food Orders in a Restaurant 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- String 🔗
- Sorting 🔗
- Ordered Set 🔗
|
|
- 1419. Minimum Number of Frogs Croaking 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- String 🔗
- Counting 🔗
|
|
- 1420. Build Array Where You Can Find The Maximum Exactly K Comparisons 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Dynamic Programming 🔗
|
|
- 1421. NPV Queries 🔗 📝
|
💰 |
|
⭐️ |
- Database 🔗
|
|
- 1422. Maximum Score After Splitting a String 🔗 📝
|
🆓 |
|
⭐️ |
- String 🔗
|
|
- 1423. Maximum Points You Can Obtain from Cards 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Sliding Window 🔗
- Prefix Sum 🔗
|
- 1770. Maximum Score from Performing Multiplication Operations 🔗 📝
- 2091. Removing Minimum and Maximum From Array 🔗 📝
|
- 1424. Diagonal Traverse II 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Array 🔗
- Sorting 🔗
- Heap (Priority Queue) 🔗
|
|
- 1425. Constrained Subsequence Sum 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
- Queue 🔗
- Sliding Window 🔗
- Heap (Priority Queue) 🔗
- Monotonic Queue 🔗
|
|
- 1426. Counting Elements 🔗 📝
|
💰 |
|
⭐️ |
- Array 🔗
- Hash Table 🔗
|
|
- 1427. Perform String Shifts 🔗 📝
|
💰 |
|
⭐️ |
- Array 🔗
- Math 🔗
- String 🔗
|
|
- 1428. Leftmost Column with at Least a One 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Array 🔗
- Binary Search 🔗
- Matrix 🔗
- Interactive 🔗
|
|
- 1429. First Unique Number 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- Design 🔗
- Queue 🔗
- Data Stream 🔗
|
|
- 1430. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Binary Tree 🔗
|
|
- 1431. Kids With the Greatest Number of Candies 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
|
|
- 1432. Max Difference You Can Get From Changing an Integer 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Math 🔗
- Greedy 🔗
|
|
- 1433. Check If a String Can Break Another String 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- String 🔗
- Greedy 🔗
- Sorting 🔗
|
|
- 1434. Number of Ways to Wear Different Hats to Each Other 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
- Bit Manipulation 🔗
- Bitmask 🔗
|
- 1994. The Number of Good Subsets 🔗 📝
|
- 1435. Create a Session Bar Chart 🔗 📝
|
💰 |
|
⭐️ |
- Database 🔗
|
- 1907. Count Salary Categories 🔗 📝
|
- 1436. Destination City 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Hash Table 🔗
- String 🔗
|
|
- 1437. Check If All 1's Are at Least Length K Places Away 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
|
- 2365. Task Scheduler II 🔗 📝
|
- 1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Queue 🔗
- Sliding Window 🔗
- Heap (Priority Queue) 🔗
- Ordered Set 🔗
- Monotonic Queue 🔗
|
- 2294. Partition Array Such That Maximum Difference Is K 🔗 📝
|
- 1439. Find the Kth Smallest Sum of a Matrix With Sorted Rows 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Binary Search 🔗
- Heap (Priority Queue) 🔗
- Matrix 🔗
|
|
- 1440. Evaluate Boolean Expression 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Database 🔗
|
|
- 1441. Build an Array With Stack Operations 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
- Stack 🔗
- Simulation 🔗
|
|
- 1442. Count Triplets That Can Form Two Arrays of Equal XOR 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- Math 🔗
- Bit Manipulation 🔗
- Prefix Sum 🔗
|
|
- 1443. Minimum Time to Collect All Apples in a Tree 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Hash Table 🔗
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
|
|
- 1444. Number of Ways of Cutting a Pizza 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
- Memoization 🔗
- Matrix 🔗
|
- 2312. Selling Pieces of Wood 🔗 📝
|
- 1445. Apples & Oranges 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Database 🔗
|
|
- 1446. Consecutive Characters 🔗 📝
|
🆓 |
✅ |
⭐️ |
- String 🔗
|
- 485. Max Consecutive Ones 🔗 📝
- 1759. Count Number of Homogenous Substrings 🔗 📝
- 2213. Longest Substring of One Repeating Character 🔗 📝
- 2229. Check if an Array Is Consecutive 🔗 📝
|
- 1447. Simplified Fractions 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Math 🔗
- String 🔗
- Number Theory 🔗
|
|
- 1448. Count Good Nodes in Binary Tree 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Binary Tree 🔗
|
|
- 1449. Form Largest Integer With Digits That Add up to Target 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
|
|
- 1450. Number of Students Doing Homework at a Given Time 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
|
|
- 1451. Rearrange Words in a Sentence 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- String 🔗
- Sorting 🔗
|
|
- 1452. People Whose List of Favorite Companies Is Not a Subset of Another List 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- String 🔗
|
|
- 1453. Maximum Number of Darts Inside of a Circular Dartboard 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Math 🔗
- Geometry 🔗
|
|
- 1454. Active Users 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Database 🔗
|
|
- 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence 🔗 📝
|
🆓 |
|
⭐️ |
- String 🔗
- String Matching 🔗
|
- 2185. Counting Words With a Given Prefix 🔗 📝
- 2255. Count Prefixes of a Given String 🔗 📝
|
- 1456. Maximum Number of Vowels in a Substring of Given Length 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- String 🔗
- Sliding Window 🔗
|
- 2271. Maximum White Tiles Covered by a Carpet 🔗 📝
|
- 1457. Pseudo-Palindromic Paths in a Binary Tree 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Bit Manipulation 🔗
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Binary Tree 🔗
|
|
- 1458. Max Dot Product of Two Subsequences 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
|
|
- 1459. Rectangles Area 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Database 🔗
|
|
- 1460. Make Two Arrays Equal by Reversing Sub-arrays 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
- Hash Table 🔗
- Sorting 🔗
|
|
- 1461. Check If a String Contains All Binary Codes of Size K 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Hash Table 🔗
- String 🔗
- Bit Manipulation 🔗
- Rolling Hash 🔗
- Hash Function 🔗
|
|
- 1462. Course Schedule IV 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Graph 🔗
- Topological Sort 🔗
|
|
- 1463. Cherry Pickup II 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
- Matrix 🔗
|
|
- 1464. Maximum Product of Two Elements in an Array 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
- Sorting 🔗
- Heap (Priority Queue) 🔗
|
|
- 1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Greedy 🔗
- Sorting 🔗
|
|
- 1466. Reorder Routes to Make All Paths Lead to the City Zero 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Graph 🔗
|
|
- 1467. Probability of a Two Boxes Having The Same Number of Distinct Balls 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Math 🔗
- Dynamic Programming 🔗
- Backtracking 🔗
- Combinatorics 🔗
- Probability and Statistics 🔗
|
|
- 1468. Calculate Salaries 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Database 🔗
|
|
- 1469. Find All The Lonely Nodes 🔗 📝
|
💰 |
|
⭐️ |
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Binary Tree 🔗
|
- 563. Binary Tree Tilt 🔗 📝
- 965. Univalued Binary Tree 🔗 📝
|
- 1470. Shuffle the Array 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
|
|
- 1471. The k Strongest Values in an Array 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Two Pointers 🔗
- Sorting 🔗
|
|
- 1472. Design Browser History 🔗 📝
|
🆓 |
✅ |
⭐️⭐️ |
- Array 🔗
- Linked List 🔗
- Stack 🔗
- Design 🔗
- Doubly-Linked List 🔗
- Data Stream 🔗
|
- 2254. Design Video Sharing Platform 🔗 📝
|
- 1473. Paint House III 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
|
- 2318. Number of Distinct Roll Sequences 🔗 📝
|
- 1474. Delete N Nodes After M Nodes of a Linked List 🔗 📝
|
💰 |
|
⭐️ |
- Linked List 🔗
|
- 19. Remove Nth Node From End of List 🔗 📝
- 1171. Remove Zero Sum Consecutive Nodes from Linked List 🔗 📝
|
- 1475. Final Prices With a Special Discount in a Shop 🔗 📝
|
🆓 |
|
⭐️ |
- Array 🔗
- Stack 🔗
- Monotonic Stack 🔗
|
|
- 1476. Subrectangle Queries 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Design 🔗
- Matrix 🔗
|
|
- 1477. Find Two Non-overlapping Sub-arrays Each With Target Sum 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- Binary Search 🔗
- Dynamic Programming 🔗
- Sliding Window 🔗
|
|
- 1478. Allocate Mailboxes 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Array 🔗
- Math 🔗
- Dynamic Programming 🔗
- Sorting 🔗
|
|
- 1479. Sales by Day of the Week 🔗 📝
|
💰 |
|
⭐️⭐️⭐️ |
- Database 🔗
|
|
- 1480. Running Sum of 1d Array 🔗 📝
|
🆓 |
✅ |
⭐️ |
- Array 🔗
- Prefix Sum 🔗
|
|
- 1481. Least Number of Unique Integers after K Removals 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- Greedy 🔗
- Sorting 🔗
- Counting 🔗
|
|
- 1482. Minimum Number of Days to Make m Bouquets 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Binary Search 🔗
|
- 2024. Maximize the Confusion of an Exam 🔗 📝
- 2136. Earliest Possible Day of Full Bloom 🔗 📝
|
- 1483. Kth Ancestor of a Tree Node 🔗 📝
|
🆓 |
👀 |
⭐️⭐️⭐️ |
- Binary Search 🔗
- Dynamic Programming 🔗
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Design 🔗
|
|
- 1484. Group Sold Products By The Date 🔗 📝
|
🆓 |
|
⭐️ |
- Database 🔗
|
- 2199. Finding the Topic of Each Post 🔗 📝
|
- 1485. Clone Binary Tree With Random Pointer 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Hash Table 🔗
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
- Binary Tree 🔗
|
- 133. Clone Graph 🔗 📝
- 138. Copy List with Random Pointer 🔗 📝
- 1490. Clone N-ary Tree 🔗 📝
|
- 1486. XOR Operation in an Array 🔗 📝
|
🆓 |
|
⭐️ |
- Math 🔗
- Bit Manipulation 🔗
|
|
- 1487. Making File Names Unique 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- String 🔗
|
|
- 1488. Avoid Flood in The City 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- Binary Search 🔗
- Greedy 🔗
- Heap (Priority Queue) 🔗
|
|
- 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Union Find 🔗
- Graph 🔗
- Sorting 🔗
- Minimum Spanning Tree 🔗
- Strongly Connected Component 🔗
|
|
- 1490. Clone N-ary Tree 🔗 📝
|
💰 |
|
⭐️⭐️ |
- Hash Table 🔗
- Tree 🔗
- Depth-First Search 🔗
- Breadth-First Search 🔗
|
- 133. Clone Graph 🔗 📝
- 138. Copy List with Random Pointer 🔗 📝
- 1485. Clone Binary Tree With Random Pointer 🔗 📝
|
- 1491. Average Salary Excluding the Minimum and Maximum Salary 🔗 📝
|
🆓 |
|
⭐️ |
- Array 🔗
- Sorting 🔗
|
|
- 1492. The kth Factor of n 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Math 🔗
|
|
- 1493. Longest Subarray of 1's After Deleting One Element 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Dynamic Programming 🔗
- Sliding Window 🔗
|
|
- 1494. Parallel Courses II 🔗 📝
|
🆓 |
|
⭐️⭐️⭐️ |
- Dynamic Programming 🔗
- Bit Manipulation 🔗
- Graph 🔗
- Bitmask 🔗
|
- 1136. Parallel Courses 🔗 📝
|
- 1495. Friendly Movies Streamed Last Month 🔗 📝
|
💰 |
|
⭐️ |
- Database 🔗
|
|
- 1496. Path Crossing 🔗 📝
|
🆓 |
|
⭐️ |
- Hash Table 🔗
- String 🔗
|
|
- 1497. Check If Array Pairs Are Divisible by k 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Hash Table 🔗
- Counting 🔗
|
- 2183. Count Array Pairs Divisible by K 🔗 📝
- 2344. Minimum Deletions to Make Array Divisible 🔗 📝
|
- 1498. Number of Subsequences That Satisfy the Given Sum Condition 🔗 📝
|
🆓 |
|
⭐️⭐️ |
- Array 🔗
- Two Pointers 🔗
- Binary Search 🔗
- Sorting 🔗
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|
- 1499. Max Value of Equation 🔗 📝
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🆓 |
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⭐️⭐️⭐️ |
- Array 🔗
- Queue 🔗
- Sliding Window 🔗
- Heap (Priority Queue) 🔗
- Monotonic Queue 🔗
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- 1885. Count Pairs in Two Arrays 🔗 📝
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- 1500. Design a File Sharing System 🔗 📝
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💰 |
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⭐️⭐️ |
- Hash Table 🔗
- Design 🔗
- Heap (Priority Queue) 🔗
- Data Stream 🔗
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- 355. Design Twitter 🔗 📝
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