-CrackYourPlacement

45 days coding challenge

LeetCode Topics

Array

0011-container-with-most-water
0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0040-combination-sum-ii
0054-spiral-matrix
0055-jump-game
0073-set-matrix-zeroes
0075-sort-colors
0084-largest-rectangle-in-histogram
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0287-find-the-duplicate-number
0289-game-of-life
0442-find-all-duplicates-in-an-array
0719-find-k-th-smallest-pair-distance
0721-accounts-merge
0870-magic-squares-in-grid
0921-spiral-matrix-iii
0999-regions-cut-by-slashes
1016-subarray-sums-divisible-by-k
1196-filling-bookcase-shelves
1511-count-number-of-teams
1538-maximum-points-you-can-obtain-from-cards
1556-make-two-arrays-equal-by-reversing-subarrays
1615-range-sum-of-sorted-subarray-sums
1622-max-value-of-equation
1691-minimum-number-of-days-to-disconnect-island
1753-path-with-minimum-effort
2163-kth-distinct-string-in-an-array
2255-minimum-swaps-to-group-all-1s-together-ii
2727-number-of-senior-citizens
3235-minimum-cost-to-convert-string-i

Two Pointers

0011-container-with-most-water
0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0028-find-the-index-of-the-first-occurrence-in-a-string
0075-sort-colors
0088-merge-sorted-array
0287-find-the-duplicate-number
0680-valid-palindrome-ii
0719-find-k-th-smallest-pair-distance
1615-range-sum-of-sorted-subarray-sums

Binary Search

0287-find-the-duplicate-number
0719-find-k-th-smallest-pair-distance
1615-range-sum-of-sorted-subarray-sums
1753-path-with-minimum-effort

Bit Manipulation

0287-find-the-duplicate-number

Sorting

0015-3sum
0018-4sum
0075-sort-colors
0088-merge-sorted-array
0719-find-k-th-smallest-pair-distance
0721-accounts-merge
1556-make-two-arrays-equal-by-reversing-subarrays
1615-range-sum-of-sorted-subarray-sums
3276-minimum-number-of-pushes-to-type-word-ii

Hash Table

0073-set-matrix-zeroes
0442-find-all-duplicates-in-an-array
0721-accounts-merge
0870-magic-squares-in-grid
0984-most-stones-removed-with-same-row-or-column
0999-regions-cut-by-slashes
1016-subarray-sums-divisible-by-k
1556-make-two-arrays-equal-by-reversing-subarrays
2163-kth-distinct-string-in-an-array
3276-minimum-number-of-pushes-to-type-word-ii

Matrix

0054-spiral-matrix
0073-set-matrix-zeroes
0289-game-of-life
0870-magic-squares-in-grid
0921-spiral-matrix-iii
0999-regions-cut-by-slashes
1691-minimum-number-of-days-to-disconnect-island
1753-path-with-minimum-effort

Dynamic Programming

0055-jump-game
0070-climbing-stairs
0121-best-time-to-buy-and-sell-stock
0803-cheapest-flights-within-k-stops
1196-filling-bookcase-shelves
1456-find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance
1511-count-number-of-teams
1756-minimum-deletions-to-make-string-balanced
2090-number-of-ways-to-arrive-at-destination

String

0028-find-the-index-of-the-first-occurrence-in-a-string
0273-integer-to-english-words
0680-valid-palindrome-ii
0721-accounts-merge
1146-greatest-common-divisor-of-strings
1756-minimum-deletions-to-make-string-balanced
2163-kth-distinct-string-in-an-array
2727-number-of-senior-citizens
3235-minimum-cost-to-convert-string-i
3275-minimum-number-of-pushes-to-type-word-i
3276-minimum-number-of-pushes-to-type-word-ii

Graph

0744-network-delay-time
0803-cheapest-flights-within-k-stops
0984-most-stones-removed-with-same-row-or-column
1300-critical-connections-in-a-network
1442-number-of-operations-to-make-network-connected
1456-find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance
2090-number-of-ways-to-arrive-at-destination
2171-second-minimum-time-to-reach-destination
3235-minimum-cost-to-convert-string-i

Shortest Path

0744-network-delay-time
0803-cheapest-flights-within-k-stops
1456-find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance
2090-number-of-ways-to-arrive-at-destination
2171-second-minimum-time-to-reach-destination
3235-minimum-cost-to-convert-string-i

Depth-First Search

0721-accounts-merge
0744-network-delay-time
0803-cheapest-flights-within-k-stops
0984-most-stones-removed-with-same-row-or-column
0999-regions-cut-by-slashes
1300-critical-connections-in-a-network
1442-number-of-operations-to-make-network-connected
1691-minimum-number-of-days-to-disconnect-island
1753-path-with-minimum-effort

Breadth-First Search

0721-accounts-merge
0744-network-delay-time
0803-cheapest-flights-within-k-stops
0999-regions-cut-by-slashes
1442-number-of-operations-to-make-network-connected
1691-minimum-number-of-days-to-disconnect-island
1753-path-with-minimum-effort
2171-second-minimum-time-to-reach-destination

Union Find

0721-accounts-merge
0984-most-stones-removed-with-same-row-or-column
0999-regions-cut-by-slashes
1442-number-of-operations-to-make-network-connected
1753-path-with-minimum-effort

Heap (Priority Queue)

0744-network-delay-time
0789-kth-largest-element-in-a-stream
0803-cheapest-flights-within-k-stops
1622-max-value-of-equation
1753-path-with-minimum-effort

Greedy

0011-container-with-most-water
0055-jump-game
0680-valid-palindrome-ii
3275-minimum-number-of-pushes-to-type-word-i
3276-minimum-number-of-pushes-to-type-word-ii

Prefix Sum

1016-subarray-sums-divisible-by-k
1538-maximum-points-you-can-obtain-from-cards

Topological Sort

2090-number-of-ways-to-arrive-at-destination

Binary Indexed Tree

1511-count-number-of-teams

Sliding Window

1538-maximum-points-you-can-obtain-from-cards
1622-max-value-of-equation
2255-minimum-swaps-to-group-all-1s-together-ii

Simulation

0054-spiral-matrix
0289-game-of-life
0921-spiral-matrix-iii

Stack

0084-largest-rectangle-in-histogram
1756-minimum-deletions-to-make-string-balanced

Math

0070-climbing-stairs
0273-integer-to-english-words
0870-magic-squares-in-grid
1146-greatest-common-divisor-of-strings
3275-minimum-number-of-pushes-to-type-word-i

Biconnected Component

1300-critical-connections-in-a-network

Counting

2163-kth-distinct-string-in-an-array
3276-minimum-number-of-pushes-to-type-word-ii

Queue

1622-max-value-of-equation

Monotonic Queue

1622-max-value-of-equation

Monotonic Stack

0084-largest-rectangle-in-histogram

Recursion

0273-integer-to-english-words

Memoization

0070-climbing-stairs

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string

Strongly Connected Component

1691-minimum-number-of-days-to-disconnect-island

Tree

0789-kth-largest-element-in-a-stream

Design

0789-kth-largest-element-in-a-stream

Binary Search Tree

0789-kth-largest-element-in-a-stream

Binary Tree

0789-kth-largest-element-in-a-stream

Data Stream

0789-kth-largest-element-in-a-stream

Backtracking

0040-combination-sum-ii