LeetHubv2

Collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Array

0001-two-sum
0822-unique-morse-code-words
0861-flipping-an-image
1241-decompress-run-length-encoded-list
1482-how-many-numbers-are-smaller-than-the-current-number
1505-create-target-array-in-the-given-order
1528-kids-with-the-greatest-number-of-candies
1574-maximum-product-of-two-elements-in-an-array
1580-shuffle-the-array
1603-running-sum-of-1d-array
1635-number-of-good-pairs
1651-shuffle-string
1656-count-good-triplets
1677-matrix-diagonal-sum
1781-check-if-two-string-arrays-are-equivalent
1786-count-the-number-of-consistent-strings
1791-richest-customer-wealth
1833-find-the-highest-altitude
1899-count-items-matching-a-rule
1944-truncate-sentence
2042-maximum-product-difference-between-two-pairs
2048-build-array-from-permutation
2058-concatenation-of-array
2116-count-number-of-pairs-with-absolute-difference-k
2137-final-value-of-variable-after-performing-operations
2148-minimum-number-of-moves-to-seat-everyone
2219-maximum-number-of-words-found-in-sentences
2231-find-first-palindromic-string-in-the-array
2292-counting-words-with-a-given-prefix
2442-number-of-arithmetic-triplets
2502-sort-the-people
2624-difference-between-element-sum-and-digit-sum-of-an-array
2714-left-and-right-sum-differences
2727-number-of-senior-citizens
2876-number-of-employees-who-met-the-target
2917-count-pairs-whose-sum-is-less-than-target
3194-find-words-containing-character
3206-find-common-elements-between-two-arrays
3226-minimum-number-game
3429-special-array-i
3471-minimum-average-of-smallest-and-largest-elements
3476-find-minimum-operations-to-make-all-elements-divisible-by-three
3555-final-array-state-after-k-multiplication-operations-i
3581-the-two-sneaky-numbers-of-digitville
3606-minimum-element-after-replacement-with-digit-sum
3778-transform-array-by-parity

Prefix Sum

1603-running-sum-of-1d-array
1833-find-the-highest-altitude
2714-left-and-right-sum-differences

Matrix

0861-flipping-an-image
1677-matrix-diagonal-sum
1791-richest-customer-wealth

Math

0069-sqrtx
0412-fizz-buzz
1406-subtract-the-product-and-sum-of-digits-of-an-integer
1444-number-of-steps-to-reduce-a-number-to-zero
1448-maximum-69-number
1610-xor-operation-in-an-array
1635-number-of-good-pairs
1806-count-of-matches-in-tournament
2383-add-two-integers
2491-smallest-even-multiple
2556-convert-the-temperature
2608-count-the-digits-that-divide-a-number
2624-difference-between-element-sum-and-digit-sum-of-an-array
2752-sum-multiples
2812-find-the-maximum-achievable-number
3172-divisible-and-non-divisible-sums-difference
3371-harshad-number
3476-find-minimum-operations-to-make-all-elements-divisible-by-three
3555-final-array-state-after-k-multiplication-operations-i
3581-the-two-sneaky-numbers-of-digitville
3606-minimum-element-after-replacement-with-digit-sum

String

0383-ransom-note
0412-fizz-buzz
0742-to-lower-case
0782-jewels-and-stones
0822-unique-morse-code-words
1205-defanging-an-ip-address
1302-delete-characters-to-make-fancy-string
1651-shuffle-string
1737-maximum-nesting-depth-of-the-parentheses
1781-check-if-two-string-arrays-are-equivalent
1786-count-the-number-of-consistent-strings
1797-goal-parser-interpretation
1899-count-items-matching-a-rule
1944-truncate-sentence
1960-check-if-the-sentence-is-pangram
2128-reverse-prefix-of-word
2137-final-value-of-variable-after-performing-operations
2219-maximum-number-of-words-found-in-sentences
2231-find-first-palindromic-string-in-the-array
2292-counting-words-with-a-given-prefix
2502-sort-the-people
2580-circular-sentence
2727-number-of-senior-citizens
2886-faulty-keyboard
3194-find-words-containing-character
3379-score-of-a-string
3412-permutation-difference-between-two-strings
3636-check-balanced-string

Simulation

0412-fizz-buzz
0861-flipping-an-image
1505-create-target-array-in-the-given-order
1708-design-parking-system
1806-count-of-matches-in-tournament
2048-build-array-from-permutation
2058-concatenation-of-array
2137-final-value-of-variable-after-performing-operations
2886-faulty-keyboard
3226-minimum-number-game
3555-final-array-state-after-k-multiplication-operations-i

Bit Manipulation

0861-flipping-an-image
1444-number-of-steps-to-reduce-a-number-to-zero
1610-xor-operation-in-an-array
1786-count-the-number-of-consistent-strings

Linked List

0908-middle-of-the-linked-list

Two Pointers

0861-flipping-an-image
0908-middle-of-the-linked-list
2128-reverse-prefix-of-word
2231-find-first-palindromic-string-in-the-array
2442-number-of-arithmetic-triplets
2917-count-pairs-whose-sum-is-less-than-target
3471-minimum-average-of-smallest-and-largest-elements

Hash Table

0001-two-sum
0383-ransom-note
0782-jewels-and-stones
0822-unique-morse-code-words
1482-how-many-numbers-are-smaller-than-the-current-number
1635-number-of-good-pairs
1786-count-the-number-of-consistent-strings
1960-check-if-the-sentence-is-pangram
2116-count-number-of-pairs-with-absolute-difference-k
2442-number-of-arithmetic-triplets
2502-sort-the-people
3206-find-common-elements-between-two-arrays
3412-permutation-difference-between-two-strings
3581-the-two-sneaky-numbers-of-digitville

Counting

0383-ransom-note
1482-how-many-numbers-are-smaller-than-the-current-number
1635-number-of-good-pairs
1708-design-parking-system
1786-count-the-number-of-consistent-strings
2116-count-number-of-pairs-with-absolute-difference-k
3778-transform-array-by-parity

Design

1708-design-parking-system

Number Theory

2491-smallest-even-multiple

Heap (Priority Queue)

1574-maximum-product-of-two-elements-in-an-array
3226-minimum-number-game
3555-final-array-state-after-k-multiplication-operations-i

Binary Search

0069-sqrtx
2917-count-pairs-whose-sum-is-less-than-target

Sorting

1482-how-many-numbers-are-smaller-than-the-current-number
1574-maximum-product-of-two-elements-in-an-array
2042-maximum-product-difference-between-two-pairs
2148-minimum-number-of-moves-to-seat-everyone
2502-sort-the-people
2917-count-pairs-whose-sum-is-less-than-target
3226-minimum-number-game
3471-minimum-average-of-smallest-and-largest-elements
3778-transform-array-by-parity

Stack

1737-maximum-nesting-depth-of-the-parentheses
2128-reverse-prefix-of-word

Greedy

1448-maximum-69-number
2148-minimum-number-of-moves-to-seat-everyone

Counting Sort

2148-minimum-number-of-moves-to-seat-everyone

Graph

1916-find-center-of-star-graph

Tree

0975-range-sum-of-bst
2384-root-equals-sum-of-children

Binary Tree

0975-range-sum-of-bst
2384-root-equals-sum-of-children

Enumeration

1656-count-good-triplets
2442-number-of-arithmetic-triplets

Depth-First Search

0975-range-sum-of-bst

Binary Search Tree

0975-range-sum-of-bst

String Matching

2292-counting-words-with-a-given-prefix