Sharpening problem-solving skills one problem at a time!
| Problem Name | Difficulty |
|---|---|
| 0022-generate-parentheses | Medium |
| 0039-combination-sum | Medium |
| 0051-n-queens | Hard |
| 0078-subsets | Medium |
| 0494-target-sum | Medium |
| 2597-the-number-of-beautiful-subsets | Medium |
| Problem Name | Difficulty |
|---|---|
| 0078-subsets | Medium |
| 0371-sum-of-two-integers | Medium |
| 2657-find-the-prefix-common-array-of-two-arrays | Medium |
| Problem Name | Difficulty |
|---|---|
| 0001-two-sum | Easy |
| 0535-encode-and-decode-tinyurl | Medium |
| 0560-subarray-sum-equals-k | Medium |
| 0916-word-subsets | Medium |
| 1282-group-the-people-given-the-group-size-they-belong-to | Medium |
| 1512-number-of-good-pairs | Easy |
| 2395-find-subarrays-with-equal-sum | Easy |
| 2540-minimum-common-value | Easy |
| 2597-the-number-of-beautiful-subsets | Medium |
| 2657-find-the-prefix-common-array-of-two-arrays | Medium |
| 3120-count-the-number-of-special-characters-i | Easy |
| 3121-count-the-number-of-special-characters-ii | Medium |
| 3760-maximum-substrings-with-distinct-start | Medium |
| 3945-digit-frequency-score | Easy |
| Problem Name | Difficulty |
|---|---|
| 0022-generate-parentheses | Medium |
| 0053-maximum-subarray | Medium |
| 0055-jump-game | Medium |
| 0121-best-time-to-buy-and-sell-stock | Easy |
| 0122-best-time-to-buy-and-sell-stock-ii | Medium |
| 0494-target-sum | Medium |
| 1137-n-th-tribonacci-number | Easy |
| 1143-longest-common-subsequence | Medium |
| 2597-the-number-of-beautiful-subsets | Medium |
| 3751-total-waviness-of-numbers-in-range-i | Medium |
| Problem Name | Difficulty |
|---|---|
| 0019-remove-nth-node-from-end-of-list | Medium |
| 0024-swap-nodes-in-pairs | Medium |
| 0082-remove-duplicates-from-sorted-list-ii | Medium |
| 0083-remove-duplicates-from-sorted-list | Easy |
| 0114-flatten-binary-tree-to-linked-list | Medium |
| 0237-delete-node-in-a-linked-list | Medium |
| 2095-delete-the-middle-node-of-a-linked-list | Medium |
| 2181-merge-nodes-in-between-zeros | Medium |
| 2807-insert-greatest-common-divisors-in-linked-list | Medium |
| Problem Name | Difficulty |
|---|---|
| 0015-3sum | Medium |
| 0019-remove-nth-node-from-end-of-list | Medium |
| 0075-sort-colors | Medium |
| 0082-remove-duplicates-from-sorted-list-ii | Medium |
| 2095-delete-the-middle-node-of-a-linked-list | Medium |
| 2161-partition-array-according-to-given-pivot | Medium |
| 2540-minimum-common-value | Easy |
| 3633-earliest-finish-time-for-land-and-water-rides-i | Easy |
| 3635-earliest-finish-time-for-land-and-water-rides-ii | Medium |
| Problem Name | Difficulty |
|---|---|
| 0024-swap-nodes-in-pairs | Medium |
| Problem Name | Difficulty |
|---|---|
| 0584-find-customer-referee | Easy |
| 0595-big-countries | Easy |
| 1683-invalid-tweets | Easy |
| 1757-recyclable-and-low-fat-products | Easy |
| Problem Name | Difficulty |
|---|---|
| 0114-flatten-binary-tree-to-linked-list | Medium |
| 0230-kth-smallest-element-in-a-bst | Medium |
| 2265-count-nodes-equal-to-average-of-subtree | Medium |
| Problem Name | Difficulty |
|---|---|
| 0114-flatten-binary-tree-to-linked-list | Medium |
| 0230-kth-smallest-element-in-a-bst | Medium |
| 2265-count-nodes-equal-to-average-of-subtree | Medium |
| Problem Name | Difficulty |
|---|---|
| 0004-median-of-two-sorted-arrays | Hard |
| 0033-search-in-rotated-sorted-array | Medium |
| 0209-minimum-size-subarray-sum | Medium |
| 0230-kth-smallest-element-in-a-bst | Medium |
| 2540-minimum-common-value | Easy |
| 3633-earliest-finish-time-for-land-and-water-rides-i | Easy |
| 3635-earliest-finish-time-for-land-and-water-rides-ii | Medium |
| Problem Name | Difficulty |
|---|---|
| 0114-flatten-binary-tree-to-linked-list | Medium |
| 0230-kth-smallest-element-in-a-bst | Medium |
| 2265-count-nodes-equal-to-average-of-subtree | Medium |
| Problem Name | Difficulty |
|---|---|
| 0114-flatten-binary-tree-to-linked-list | Medium |
| Problem Name | Difficulty |
|---|---|
| 0004-median-of-two-sorted-arrays | Hard |
| 0053-maximum-subarray | Medium |
| Problem Name | Difficulty |
|---|---|
| 0055-jump-game | Medium |
| 0122-best-time-to-buy-and-sell-stock-ii | Medium |
| 1282-group-the-people-given-the-group-size-they-belong-to | Medium |
| 1710-maximum-units-on-a-truck | Easy |
| 2126-destroying-asteroids | Medium |
| 2144-minimum-cost-of-buying-candies-with-discount | Easy |
| 3633-earliest-finish-time-for-land-and-water-rides-i | Easy |
| 3635-earliest-finish-time-for-land-and-water-rides-ii | Medium |
| Problem Name | Difficulty |
|---|---|
| 0209-minimum-size-subarray-sum | Medium |
| 0560-subarray-sum-equals-k | Medium |
| 1769-minimum-number-of-operations-to-move-all-balls-to-each-box | Medium |
| 2574-left-and-right-sum-differences | Easy |
| Problem Name | Difficulty |
|---|---|
| 0015-3sum | Medium |
| 0075-sort-colors | Medium |
| 1710-maximum-units-on-a-truck | Easy |
| 2126-destroying-asteroids | Medium |
| 2144-minimum-cost-of-buying-candies-with-discount | Easy |
| 2597-the-number-of-beautiful-subsets | Medium |
| 3633-earliest-finish-time-for-land-and-water-rides-i | Easy |
| 3635-earliest-finish-time-for-land-and-water-rides-ii | Medium |
| Problem Name | Difficulty |
|---|---|
| 0209-minimum-size-subarray-sum | Medium |
| Problem Name | Difficulty |
|---|---|
| 2597-the-number-of-beautiful-subsets | Medium |
| Problem Name | Difficulty |
|---|---|
| 1137-n-th-tribonacci-number | Easy |
| Problem Name | Difficulty |
|---|---|
| 0535-encode-and-decode-tinyurl | Medium |
| Problem Name | Difficulty |
|---|---|
| 0535-encode-and-decode-tinyurl | Medium |
| Problem Name | Difficulty |
|---|---|
| 2120-execution-of-all-suffix-instructions-staying-in-a-grid | Medium |
| 2161-partition-array-according-to-given-pivot | Medium |
| 2181-merge-nodes-in-between-zeros | Medium |
| 3925-concatenate-array-with-reverse | Easy |
| Problem Name | Difficulty |
|---|---|
| 1828-queries-on-number-of-points-inside-a-circle | Medium |
| Problem Name | Difficulty |
|---|---|
| 2807-insert-greatest-common-divisors-in-linked-list | Medium |
| Problem Name | Difficulty |
|---|---|
| 3898-find-the-degree-of-each-vertex | Easy |
| Problem Name | Difficulty |
|---|---|
| 3898-find-the-degree-of-each-vertex | Easy |
| Problem Name | Difficulty |
|---|---|
| 1512-number-of-good-pairs | Easy |
| Problem Name | Difficulty |
|---|---|
| 3751-total-waviness-of-numbers-in-range-i | Medium |