2025DSA

this is the code which i solved in the leetcode

LeetCode Topics

Math

0007-reverse-integer
0009-palindrome-number
0048-rotate-image
0069-sqrtx
0189-rotate-array
0258-add-digits
0268-missing-number
1013-fibonacci-number
2032-largest-odd-number-in-string
2520-count-the-digits-that-divide-a-number

Dynamic Programming

0121-best-time-to-buy-and-sell-stock
0124-binary-tree-maximum-path-sum
1013-fibonacci-number

Recursion

1013-fibonacci-number

Memoization

1013-fibonacci-number

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0014-longest-common-prefix
0026-remove-duplicates-from-sorted-array
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0048-rotate-image
0054-spiral-matrix
0074-search-a-2d-matrix
0075-sort-colors
0121-best-time-to-buy-and-sell-stock
0136-single-number
0153-find-minimum-in-rotated-sorted-array
0169-majority-element
0189-rotate-array
0217-contains-duplicate
0229-majority-element-ii
0268-missing-number
0283-move-zeroes
0485-max-consecutive-ones
0560-subarray-sum-equals-k
0792-binary-search
0948-sort-an-array
1207-unique-number-of-occurrences
1408-find-the-smallest-divisor-given-a-threshold
1646-kth-missing-positive-number
2271-rearrange-array-elements-by-sign
2342-max-sum-of-a-pair-with-equal-sum-of-digits
2737-row-with-maximum-ones

Divide and Conquer

0004-median-of-two-sorted-arrays
0169-majority-element
0948-sort-an-array

Sorting

0075-sort-colors
0169-majority-element
0217-contains-duplicate
0229-majority-element-ii
0242-valid-anagram
0268-missing-number
0948-sort-an-array
2342-max-sum-of-a-pair-with-equal-sum-of-digits

Heap (Priority Queue)

0948-sort-an-array
2342-max-sum-of-a-pair-with-equal-sum-of-digits

Merge Sort

0948-sort-an-array

Bucket Sort

0948-sort-an-array

Radix Sort

0948-sort-an-array

Counting Sort

0169-majority-element
0229-majority-element-ii
0948-sort-an-array

Two Pointers

0026-remove-duplicates-from-sorted-array
0075-sort-colors
0151-reverse-words-in-a-string
0189-rotate-array
0283-move-zeroes
2271-rearrange-array-elements-by-sign

Hash Table

0001-two-sum
0169-majority-element
0217-contains-duplicate
0229-majority-element-ii
0242-valid-anagram
0268-missing-number
0560-subarray-sum-equals-k
1207-unique-number-of-occurrences
2342-max-sum-of-a-pair-with-equal-sum-of-digits

Binary Search

0004-median-of-two-sorted-arrays
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position
0069-sqrtx
0074-search-a-2d-matrix
0153-find-minimum-in-rotated-sorted-array
0268-missing-number
0792-binary-search
1408-find-the-smallest-divisor-given-a-threshold
1646-kth-missing-positive-number

Bit Manipulation

0136-single-number
0268-missing-number

Simulation

0054-spiral-matrix
0258-add-digits
2271-rearrange-array-elements-by-sign

Prefix Sum

0560-subarray-sum-equals-k

Matrix

0048-rotate-image
0054-spiral-matrix
0074-search-a-2d-matrix
2737-row-with-maximum-ones

String

0014-longest-common-prefix
0151-reverse-words-in-a-string
0242-valid-anagram
0812-rotate-string
1078-remove-outermost-parentheses
2032-largest-odd-number-in-string

Stack

0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
1078-remove-outermost-parentheses

Greedy

2032-largest-odd-number-in-string

String Matching

0812-rotate-string

Trie

0014-longest-common-prefix

Tree

0100-same-tree
0102-binary-tree-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0124-binary-tree-maximum-path-sum
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0543-diameter-of-binary-tree

Breadth-First Search

0100-same-tree
0102-binary-tree-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree

Binary Tree

0100-same-tree
0102-binary-tree-level-order-traversal
0103-binary-tree-zigzag-level-order-traversal
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0124-binary-tree-maximum-path-sum
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0543-diameter-of-binary-tree

Depth-First Search

0100-same-tree
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0124-binary-tree-maximum-path-sum
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0543-diameter-of-binary-tree

Number Theory

0258-add-digits