Breadth-First Search (71 completed) Back to top # Title Level Cats Solution Languages Date Complete 100 Same Tree Easy B75, N150 solution py Jul 03, 2024 102 Binary Tree Level Order Traversal Medium B75, N150 solution java Jul 04, 2024 103 Binary Tree Zigzag Level Order Traversal Medium solution py Jul 03, 2024 104 Maximum Depth of Binary Tree Easy B75, N150 solution py Jul 04, 2024 107 Binary Tree Level Order Traversal II Medium solution java Jul 04, 2024 111 Minimum Depth of Binary Tree Easy solution c, java Jun 07, 2024 112 Path Sum Easy solution py Jul 03, 2024 199 Binary Tree Right Side View Medium N150 solution cpp, java Jul 04, 2024 200 Number of Islands Medium B75, N150 solution py Jun 17, 2024 226 Invert Binary Tree Easy B75, N150 solution py Jul 03, 2024 261 Graph Valid Tree Medium B75, N150, Weekly Premium solution py Jan 29, 2025 286 Walls and Gates Medium N150 solution py Jun 15, 2024 314 Binary Tree Vertical Order Traversal Medium solution py Jun 12, 2024 322 Coin Change Medium B75, N150 solution py Sep 24, 2024 339 Nested List Weight Sum Medium solution c, py Jul 02, 2024 364 Nested List Weight Sum II Medium solution java, py Jul 02, 2024 429 N-ary Tree Level Order Traversal Medium solution py Jul 04, 2024 431 Encode N-ary Tree to Binary Tree Hard solution java, py Jun 28, 2024 513 Find Bottom Left Tree Value Medium solution java Jul 03, 2024 542 01 Matrix Medium solution py Jun 26, 2024 559 Maximum Depth of N-ary Tree Easy solution py Sep 24, 2024 637 Average of Levels in Binary Tree Easy solution py Jul 04, 2024 653 Two Sum IV - Input is a BST Easy solution py Jul 31, 2024 662 Maximum Width of Binary Tree Medium solution py Oct 28, 2024 684 Redundant Connection Medium Daily, N150 solution py Jan 29, 2025 690 Employee Importance Medium solution java Jul 02, 2024 695 Max Area of Island Medium N150 solution c Jun 24, 2024 743 Network Delay Time Medium N150 solution java, py Jul 28, 2024 797 All Paths From Source to Target Medium solution py Mar 05, 2025 827 Making A Large Island Hard Daily solution py Jan 31, 2025 863 All Nodes Distance K in Binary Tree Medium solution py Jun 26, 2024 909 Snakes and Ladders Medium solution py Jun 12, 2024 919 Complete Binary Tree Inserter Medium solution py Jul 05, 2024 959 Regions Cut By Slashes Medium Daily solution py Aug 10, 2024 987 Vertical Order Traversal of a Binary Tree Hard solution py Jun 12, 2024 993 Cousins in Binary Tree Easy solution py Jul 04, 2024 994 Rotting Oranges Medium N150 solution py Jun 15, 2024 1020 Number of Enclaves Medium solution py Jun 26, 2024 1087 Brace Expansion Medium solution py Jun 15, 2024 1161 Maximum Level Sum of a Binary Tree Medium solution py Jul 17, 2024 1254 Number of Closed Islands Medium solution py Jun 26, 2024 1261 Find Elements in a Contaminated Binary Tree Medium Daily solution py Feb 21, 2025 1267 Count Servers that Communicate Medium Daily solution py Jan 23, 2025 1284 Minimum Number of Flips to Convert Binary Matrix to Zero Matrix Hard solution py Jun 09, 2024 1302 Deepest Leaves Sum Medium solution c, js, py Jun 07, 2024 1315 Sum of Nodes with Even-Valued Grandparent Medium solution py Jun 12, 2024 1368 Minimum Cost to Make at Least One Valid Path in a Grid Hard Daily solution py Jan 18, 2025 1376 Time Needed to Inform All Employees Medium solution py Oct 26, 2024 1448 Count Good Nodes in Binary Tree Medium N150 solution java Jul 04, 2024 1457 Pseudo-Palindromic Paths in a Binary Tree Medium solution py Jul 05, 2024 1462 Course Schedule IV Medium Daily solution py Jan 27, 2025 1490 Clone N-ary Tree Medium solution java, py Jun 02, 2024 1568 Minimum Number of Days to Disconnect Island Hard Daily solution py Aug 11, 2024 1602 Find Nearest Right Node in Binary Tree Medium solution java, py Jul 03, 2024 1609 Even Odd Tree Medium solution py Jul 05, 2024 1660 Correct a Binary Tree Medium solution py Jun 27, 2024 1730 Shortest Path to Get Food Medium Weekly Premium solution py Jun 26, 2024 1740 Find Distance in a Binary Tree Medium Weekly Premium solution py Jul 15, 2024 1905 Count Sub Islands Medium Daily solution py Jun 24, 2024 1992 Find All Groups of Farmland Medium solution java, py Jun 24, 2024 2045 Second Minimum Time to Reach Destination Hard Daily solution py Jul 28, 2024 2192 All Ancestors of a Node in a Directed Acyclic Graph Medium Daily solution java, py Jun 29, 2024 2258 Escape the Spreading Fire Hard solution py Jun 15, 2024 2385 Amount of Time for Binary Tree to Be Infected Medium solution py Jun 26, 2024 2415 Reverse Odd Levels of Binary Tree Medium Daily solution py Jun 23, 2024 2458 Height of Binary Tree After Subtree Removal Queries Hard Daily solution py Oct 26, 2024 2493 Divide Nodes Into the Maximum Number of Groups Hard Daily solution py Jan 30, 2025 2583 Kth Largest Sum in a Binary Tree Medium Daily solution py Oct 22, 2024 2658 Maximum Number of Fish in a Grid Medium Daily solution py Jan 28, 2025 2852 Sum of Remoteness of All Cells Medium Weekly Premium solution py Jan 23, 2025 3157 Find the Level of Tree with Minimum Sum Medium solution py Jul 05, 2024