| 1501. Countries You Can Safely Invest In | Solution | Solve | Medium | - | |
| 1502. Can Make Arithmetic Progression From Sequence | Solution | Solve | Easy | | |
| 1503. Last Moment Before All Ants Fall Out of a Plank | Solution | Solve | Medium | | |
| 1504. Count Submatrices With All Ones | Solution | Solve | Medium | | |
| 1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits | Solution | Solve | Hard | - | |
| 1506. Find Root of N-Ary Tree | Solution | Solve | Medium | | |
| 1507. Reformat Date | Solution | Solve | Easy | | |
| 1508. Range Sum of Sorted Subarray Sums | Solution | Solve | Medium | | |
| 1509. Minimum Difference Between Largest and Smallest Value in Three Moves | Solution | Solve | Medium | | |
| 1510. Stone Game IV | Solution | Solve | Hard | | |
| 1511. Customer Order Frequency | Solution | Solve | Easy | | |
| 1512. Number of Good Pairs | Solution | Solve | Easy | | |
| 1513. Number of Substrings With Only 1s | Solution | Solve | Medium | | |
| 1514. Path with Maximum Probability | Solution | Solve | Medium | | |
| 1515. Best Position for a Service Centre | Solution | Solve | Hard | | |
| 1516. Move Sub-Tree of N-Ary Tree | Solution | Solve | Hard | | |
| 1517. Find Users With Valid E-Mails | Solution | Solve | Easy | | |
| 1518. Water Bottles | Solution | Solve | Easy | | |
| 1519. Number of Nodes in the Sub-Tree With the Same Label | Solution | Solve | Medium | | |
| 1520. Maximum Number of Non-Overlapping Substrings | Solution | Solve | Hard | | |
| 1521. Find a Value of a Mysterious Function Closest to Target | Solution | Solve | Hard | | |
| 1522. Diameter of N-Ary Tree | Solution | Solve | Medium | | |
| 1523. Count Odd Numbers in an Interval Range | Solution | Solve | Easy | | |
| 1524. Number of Sub-arrays With Odd Sum | Solution | Solve | Medium | | |
| 1525. Number of Good Ways to Split a String | Solution | Solve | Medium | | |
| 1526. Minimum Number of Increments on Subarrays to Form a Target Array | Solution | Solve | Hard | | |
| 1527. Patients With a Condition | Solution | Solve | Easy | | |
| 1528. Shuffle String | Solution | Solve | Easy | | |
| 1529. Minimum Suffix Flips | Solution | Solve | Medium | | |
| 1530. Number of Good Leaf Nodes Pairs | Solution | Solve | Medium | | |
| 1531. String Compression II | Solution | Solve | Hard | | |
| 1532. The Most Recent Three Orders | Solution | Solve | Medium | - | |
| 1533. Find the Index of the Large Integer | Solution | Solve | Medium | | |
| 1534. Count Good Triplets | Solution | Solve | Easy | | |
| 1535. Find the Winner of an Array Game | Solution | Solve | Medium | | |
| 1536. Minimum Swaps to Arrange a Binary Grid | Solution | Solve | Medium | - | |
| 1537. Get the Maximum Score | Solution | Solve | Hard | | |
| 1538. Guess the Majority in a Hidden Array | Solution | Solve | Medium | | |
| 1539. Kth Missing Positive Number | Solution | Solve | Easy | | |
| 1540. Can Convert String in K Moves | Solution | Solve | Medium | | |
| 1541. Minimum Insertions to Balance a Parentheses String | Solution | Solve | Medium | | |
| 1542. Find Longest Awesome Substring | Solution | Solve | Hard | | |
| 1543. Fix Product Name Format | Solution | Solve | Easy | - | |
| 1544. Make The String Great | Solution | Solve | Easy | | |
| 1545. Find Kth Bit in Nth Binary String | Solution | Solve | Medium | | |
| 1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target | Solution | Solve | Medium | | |
| 1547. Minimum Cost to Cut a Stick | Solution | Solve | Hard | | |
| 1548. The Most Similar Path in a Graph | Solution | Solve | Hard | | |
| 1549. The Most Recent Orders for Each Product | Solution | Solve | Medium | | |
| 1550. Three Consecutive Odds | Solution | Solve | Easy | | |
