Structured solutions to LeetCode problems in Java, focusing on DSA patterns, optimized approaches, and interview readiness.
| 0002-add-two-numbers |
| 0021-merge-two-sorted-lists |
| 0141-linked-list-cycle |
| 0206-reverse-linked-list |
| 0328-odd-even-linked-list |
| 1290-convert-binary-number-in-a-linked-list-to-integer |
| 0002-add-two-numbers |
| 0021-merge-two-sorted-lists |
| 0050-powx-n |
| 0206-reverse-linked-list |
| 0004-median-of-two-sorted-arrays |
| 0053-maximum-subarray |
| 0169-majority-element |
| 0190-reverse-bits |
| 0191-number-of-1-bits |
| 0347-top-k-frequent-elements |
| 0493-reverse-pairs |
| 0912-sort-an-array |
| 0018-4sum |
| 0056-merge-intervals |
| 0075-sort-colors |
| 0088-merge-sorted-array |
| 0169-majority-element |
| 0229-majority-element-ii |
| 0347-top-k-frequent-elements |
| 0912-sort-an-array |
| 0078-subsets |
| 0090-subsets-ii |
| 0136-single-number |
| 0190-reverse-bits |
| 0191-number-of-1-bits |
| 0287-find-the-duplicate-number |
| 0338-counting-bits |
| 0371-sum-of-two-integers |
| 0169-majority-element |
| 0229-majority-element-ii |
| 0347-top-k-frequent-elements |
| 0048-rotate-image |
| 0054-spiral-matrix |
| 0073-set-matrix-zeroes |
| 0074-search-a-2d-matrix |
| 0128-longest-consecutive-sequence |
| 0239-sliding-window-maximum |
| 0347-top-k-frequent-elements |
| 0912-sort-an-array |
| 0493-reverse-pairs |
| 0912-sort-an-array |
| 0347-top-k-frequent-elements |
| 0912-sort-an-array |
| 0912-sort-an-array |
| 0912-sort-an-array |
| 0493-reverse-pairs |
| 0493-reverse-pairs |
| 0493-reverse-pairs |
| 0347-top-k-frequent-elements |
| 0042-trapping-rain-water |
| 0150-evaluate-reverse-polish-notation |
| 0042-trapping-rain-water |
| 0076-minimum-window-substring |
| 0239-sliding-window-maximum |
| 0567-permutation-in-string |
| 0239-sliding-window-maximum |
| 0239-sliding-window-maximum |
| 0981-time-based-key-value-store |
| 0022-generate-parentheses |
| 0039-combination-sum |
| 0040-combination-sum-ii |
| 0046-permutations |
| 0078-subsets |
| 0090-subsets-ii |
| 0131-palindrome-partitioning |
| 0070-climbing-stairs |
| 1979-find-greatest-common-divisor-of-array |
| 0043-multiply-strings |
| 0054-spiral-matrix |