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0019-remove-nth-node-from-end-of-list
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0023-merge-k-sorted-lists
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0026-remove-duplicates-from-sorted-array
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0031-next-permutation
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0033-search-in-rotated-sorted-array
0033-search-in-rotated-sorted-array
 
 
0034-find-first-and-last-position-of-element-in-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
 
 
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0144-binary-tree-preorder-traversal
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0145-binary-tree-postorder-traversal
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0151-reverse-words-in-a-string
0151-reverse-words-in-a-string
 
 
0153-find-minimum-in-rotated-sorted-array
0153-find-minimum-in-rotated-sorted-array
 
 
0155-min-stack
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0160-intersection-of-two-linked-lists
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0234-palindrome-linked-list
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1021-remove-outermost-parentheses
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1029-vertical-order-traversal-of-a-binary-tree
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1046-last-stone-weight
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1056-capacity-to-ship-packages-within-d-days
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1290-convert-binary-number-in-a-linked-list-to-integer
1290-convert-binary-number-in-a-linked-list-to-integer
 
 
131-palindrome-partitioning
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1337-the-k-weakest-rows-in-a-matrix
1337-the-k-weakest-rows-in-a-matrix
 
 
1338-reduce-array-size-to-the-half
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1346-check-if-n-and-its-double-exist
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1351-count-negative-numbers-in-a-sorted-matrix
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1385-find-the-distance-value-between-two-arrays
1385-find-the-distance-value-between-two-arrays
 
 
1408-find-the-smallest-divisor-given-a-threshold
1408-find-the-smallest-divisor-given-a-threshold
 
 
141-linked-list-cycle
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1464-maximum-product-of-two-elements-in-an-array
 
 
153-find-minimum-in-rotated-sorted-array
153-find-minimum-in-rotated-sorted-array
 
 

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Leetcode-Problems

LeetCode Topics

Tree
0102-binary-tree-level-order-traversal

Breadth-First Search
0102-binary-tree-level-order-traversal
0200-number-of-islands

Binary Tree
0102-binary-tree-level-order-traversal

Array
0001-two-sum
0033-search-in-rotated-sorted-array
0048-rotate-image
0053-maximum-subarray
0074-search-a-2d-matrix
0075-sort-colors
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0128-longest-consecutive-sequence
0169-majority-element
0200-number-of-islands
0287-find-the-duplicate-number
0303-range-sum-query-immutable
0496-next-greater-element-i
0525-contiguous-array
0540-single-element-in-a-sorted-array
0560-subarray-sum-equals-k
0739-daily-temperatures

Depth-First Search
0200-number-of-islands

Union Find
0128-longest-consecutive-sequence
0200-number-of-islands

Matrix
0048-rotate-image
0074-search-a-2d-matrix
0200-number-of-islands

Design
0303-range-sum-query-immutable

Prefix Sum
0303-range-sum-query-immutable
0525-contiguous-array
0560-subarray-sum-equals-k

Hash Table
0001-two-sum
0003-longest-substring-without-repeating-characters
0128-longest-consecutive-sequence
0169-majority-element
0496-next-greater-element-i
0525-contiguous-array
0560-subarray-sum-equals-k

Stack
0496-next-greater-element-i
0739-daily-temperatures

Monotonic Stack
0496-next-greater-element-i
0739-daily-temperatures

Divide and Conquer
0053-maximum-subarray
0169-majority-element

Dynamic Programming
0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock

Two Pointers
0075-sort-colors
0088-merge-sorted-array
0287-find-the-duplicate-number

Sorting
0075-sort-colors
0088-merge-sorted-array
0169-majority-element

Math
0048-rotate-image

Binary Search
0033-search-in-rotated-sorted-array
0074-search-a-2d-matrix
0287-find-the-duplicate-number
0540-single-element-in-a-sorted-array

Bit Manipulation
0287-find-the-duplicate-number

Counting
0169-majority-element

String
0003-longest-substring-without-repeating-characters

Sliding Window
0003-longest-substring-without-repeating-characters

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LeetCode Problems Solution

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