list.json

{
  "easy": [
    "https://leetcode.com/problems/two-sum/",
    "https://leetcode.com/problems/maximum-subarray/",
    "https://leetcode.com/problems/valid-parentheses/",
    "https://leetcode.com/problems/best-time-to-buy-and-sell-stock/",
    "https://leetcode.com/problems/house-robber/",
    "https://leetcode.com/problems/reverse-linked-list/",
    "https://leetcode.com/problems/single-number/",
    "https://leetcode.com/problems/merge-two-sorted-lists/",
    "https://leetcode.com/problems/climbing-stairs/",
    "https://leetcode.com/problems/symmetric-tree/",
    "https://leetcode.com/problems/intersection-of-two-linked-lists/",
    "https://leetcode.com/problems/reverse-integer/",
    "https://leetcode.com/problems/move-zeroes/",
    "https://leetcode.com/problems/path-sum-iii/",
    "https://leetcode.com/problems/min-stack/",
    "https://leetcode.com/problems/inverse-binary-tree/",
    "https://leetcode.com/problems/merge-two-binary-tree/",
    "https://leetcode.com/problems/majority-element/",
    "https://leetcode.com/problems/palindrome-linked-list/",
    "https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/",
    "https://leetcode.com/problems/linked-list-cycle/",
    "https://leetcode.com/problems/remove-duplicates-from-sorted-array/",
    "https://leetcode.com/problems/diameter-of-binary-tree/",
    "https://leetcode.com/problems/shortest-unsorted-continuous-subarray/",
    "https://leetcode.com/problems/rotate-array/",
    "https://leetcode.com/problems/longest-common-prefix/",
    "https://leetcode.com/problems/palindrome-number/",
    "https://leetcode.com/problems/maximum-depth-of-binary-tree/",
    "https://leetcode.com/problems/jewels-and-stones/",
    "https://leetcode.com/problems/search-insert-position/",
    "https://leetcode.com/problems/balanced-binary-tree/",
    "https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/",
    "https://leetcode.com/problems/subtree-of-another-tree/",
    "https://leetcode.com/problems/roman-to-integer/",
    "https://leetcode.com/problems/convert-bst-to-greater-tree/",
    "https://leetcode.com/problems/same-tree/",
    "https://leetcode.com/problems/merge-sorted-array/",
    "https://leetcode.com/problems/hamming-distance/",
    "https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/",
    "https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/",
    "https://leetcode.com/problems/count-primes/",
    "https://leetcode.com/problems/min-cost-climbing-stairs/",
    "https://leetcode.com/problems/trim-a-binary-search-tree/",
    "https://leetcode.com/problems/non-decreasing-array/",
    "https://leetcode.com/problems/island-perimeter/",
    "https://leetcode.com/problems/first-unique-character-in-a-string/",
    "https://leetcode.com/problems/add-binary/",
    "https://leetcode.com/problems/path-sum/",
    "https://leetcode.com/problems/longest-univalue-path/",
    "https://leetcode.com/problems/happy-number/",
    "https://leetcode.com/problems//"
  ],
  "middle": [
    "https://leetcode.com/problems//",
    "https://leetcode.com/problems/longest-substring-without-repeating-characters/",
    "https://leetcode.com/problems/add-two-numbers/",
    "https://leetcode.com/problems/3sum/",
    "https://leetcode.com/problems/longest-palindromic-substring/",
    "https://leetcode.com/problems/container-with-most-water/",
    "https://leetcode.com/problems/generate-parentheses/",
    "https://leetcode.com/problems/number-of-islands/",
    "https://leetcode.com/problems/search-in-rotated-sorted-array/",
    "https://leetcode.com/problems/longest-increasing-subsequence/",
    "https://leetcode.com/problems/find-the-duplicate-number/",
    "https://leetcode.com/problems/product-of-array-except-self/",
    "https://leetcode.com/problems/word-break/",
    "https://leetcode.com/problems/merge-intervals/",
    "https://leetcode.com/problems/letter-combinations-of-a-phone-number/",
    "https://leetcode.com/problems/subarray-sum-equals-k/",
    "https://leetcode.com/problems/maximum-product-subarray/",
    "https://leetcode.com/problems/permutations/",
    "https://leetcode.com/problems/combination-sum/",
    "https://leetcode.com/problems/validate-binary-search-tree/",
    "https://leetcode.com/problems/jump-game/",
    "https://leetcode.com/problems/kth-largest-element-in-an-array/",
    "https://leetcode.com/problems/subsets/",
    "https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/",
    "https://leetcode.com/problems/coin-change/",
    "https://leetcode.com/problems/course-schedule/",
    "https://leetcode.com/problems/word-search/",
    "https://leetcode.com/problems/next-permutation/",
    "https://leetcode.com/problems/remove-nth-node-from-end-of-list/",
    "https://leetcode.com/problems/unique-binary-search-trees/",
    "https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/",
    "https://leetcode.com/problems/group-anagrams/",
    "https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/",
    "https://leetcode.com/problems/sort-colors/",
    "https://leetcode.com/problems/binary-tree-inorder-traversal/",
    "https://leetcode.com/problems/copy-list-with-random-pointer/",
    "https://leetcode.com/problems/task-scheduler/",
    "https://leetcode.com/problems/decode-string/",
    "https://leetcode.com/problems/search-a-2d-matrix-ii/",
    "https://leetcode.com/problems/unique-paths/",
    "https://leetcode.com/problems/rotate-image/",
    "https://leetcode.com/problems/word-ladder/",
    "https://leetcode.com/problems/top-k-frequent-elements/",
    "https://leetcode.com/problems/implement-trie-prefix-tree/",
    "https://leetcode.com/problems/binary-tree-level-order-traversal/",
    "https://leetcode.com/problems/find-all-anagrams-in-a-string/",
    "https://leetcode.com/problems/flatten-binary-tree-to-linked-list/",
    "https://leetcode.com/problems/queue-reconstruction-by-height/",
    "https://leetcode.com/problems/meeting-rooms-ii/",
    "https://leetcode.com/problems/sort-list/",
    "https://leetcode.com/problems/house-robber-iii/"
  ]
}