Interview Prep/Companies/ServiceNow

ServiceNow

84 questions tracked80 with solutions

🔍

Frequency scoreSorted highest → lowest frequency✓ Our Solution = we have a detailed walkthrough

Showing 84 of 84 questions

HardTrapping Rain Water✓ Our Solution

100

ArrayTwo PointersDynamic ProgrammingStack+1

LeetCode ↗65% acc.

MediumSubarray Product Less Than K✓ Our Solution

100

ArrayBinary SearchSliding WindowPrefix Sum

LeetCode ↗53% acc.

EasyValid Parentheses✓ Our Solution

StringStack

LeetCode ↗42% acc.

MediumGroup Anagrams✓ Our Solution

ArrayHash TableStringSorting

LeetCode ↗71% acc.

MediumLRU Cache✓ Our Solution

Hash TableLinked ListDesignDoubly-Linked List

LeetCode ↗45% acc.

MediumLexicographically Smallest String After Operations With Constraint✓ Our Solution

StringGreedy

LeetCode ↗62% acc.

MediumGenerate Parentheses✓ Our Solution

StringDynamic ProgrammingBacktracking

LeetCode ↗77% acc.

HardNumber of Distinct Roll Sequences✓ Our Solution

Dynamic ProgrammingMemoization

LeetCode ↗57% acc.

HardFind Minimum Diameter After Merging Two Trees✓ Our Solution

TreeDepth-First SearchBreadth-First SearchGraph

LeetCode ↗57% acc.

MediumLongest Substring Without Repeating Characters✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗37% acc.

EasyBest Time to Buy and Sell Stock✓ Our Solution

ArrayDynamic Programming

LeetCode ↗55% acc.

EasyMove Zeroes✓ Our Solution

ArrayTwo Pointers

LeetCode ↗63% acc.

MediumZigzag Conversion✓ Our Solution

String

LeetCode ↗52% acc.

EasyDesign HashMap✓ Our Solution

ArrayHash TableLinked ListDesign+1

LeetCode ↗66% acc.

MediumMerge Intervals✓ Our Solution

ArraySorting

LeetCode ↗49% acc.

MediumDaily Temperatures✓ Our Solution

ArrayStackMonotonic Stack

LeetCode ↗67% acc.

MediumMaximal Square✓ Our Solution

ArrayDynamic ProgrammingMatrix

LeetCode ↗49% acc.

MediumKth Largest Element in an Array✓ Our Solution

ArrayDivide and ConquerSortingHeap (Priority Queue)+1

LeetCode ↗68% acc.

EasyTwo Sum✓ Our Solution

ArrayHash Table

LeetCode ↗56% acc.

MediumContainer With Most Water✓ Our Solution

ArrayTwo PointersGreedy

LeetCode ↗58% acc.

HardFirst Missing Positive✓ Our Solution

ArrayHash Table

LeetCode ↗41% acc.

MediumNumber of Islands✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗62% acc.

MediumLongest Palindromic Substring✓ Our Solution

Two PointersStringDynamic Programming

LeetCode ↗36% acc.

HardMedian of Two Sorted Arrays✓ Our Solution

ArrayBinary SearchDivide and Conquer

LeetCode ↗44% acc.

MediumSearch in Rotated Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗43% acc.

MediumPacific Atlantic Water Flow✓ Our Solution

ArrayDepth-First SearchBreadth-First SearchMatrix

LeetCode ↗58% acc.

MediumTop K Frequent Words✓ Our Solution

ArrayHash TableStringTrie+4

LeetCode ↗59% acc.

EasyReverse Linked List✓ Our Solution

Linked ListRecursion

LeetCode ↗79% acc.

HardLFU Cache✓ Our Solution

Hash TableLinked ListDesignDoubly-Linked List

LeetCode ↗47% acc.

MediumMaximum Product Subarray✓ Our Solution

ArrayDynamic Programming

LeetCode ↗35% acc.

MediumValidate Binary Search Tree✓ Our Solution

TreeDepth-First SearchBinary Search TreeBinary Tree

LeetCode ↗34% acc.

MediumString Compression✓ Our Solution

Two PointersString

LeetCode ↗58% acc.

MediumSet Matrix Zeroes✓ Our Solution

ArrayHash TableMatrix

LeetCode ↗61% acc.

HardNumber of Visible People in a Queue✓ Our Solution

ArrayStackMonotonic Stack

LeetCode ↗71% acc.

MediumValidate IP Address✓ Our Solution

String

LeetCode ↗28% acc.

EasyFirst Unique Character in a String✓ Our Solution

Hash TableStringQueueCounting

LeetCode ↗64% acc.

MediumNumber of Distinct Substrings in a String

StringTrieRolling HashSuffix Array+1

LeetCode ↗65% acc.

MediumBinary Tree Right Side View✓ Our Solution

TreeDepth-First SearchBreadth-First SearchBinary Tree

LeetCode ↗67% acc.

MediumLongest Consecutive Sequence✓ Our Solution

ArrayHash TableUnion Find

LeetCode ↗47% acc.

MediumAsteroid Collision✓ Our Solution

ArrayStackSimulation

LeetCode ↗46% acc.

MediumSum Root to Leaf Numbers✓ Our Solution

TreeDepth-First SearchBinary Tree

LeetCode ↗69% acc.

MediumFraction to Recurring Decimal✓ Our Solution

Hash TableMathString

LeetCode ↗26% acc.

MediumVowels of All Substrings✓ Our Solution

MathStringDynamic ProgrammingCombinatorics

LeetCode ↗55% acc.

MediumMeeting Rooms II

ArrayTwo PointersGreedySorting+2

LeetCode ↗52% acc.

MediumReverse Words in a String II

Two PointersString

LeetCode ↗56% acc.

MediumMaximum Subarray✓ Our Solution

ArrayDivide and ConquerDynamic Programming

LeetCode ↗52% acc.

MediumLargest Number✓ Our Solution

ArrayStringGreedySorting

LeetCode ↗41% acc.

MediumValid Parenthesis String✓ Our Solution

StringDynamic ProgrammingStackGreedy

LeetCode ↗39% acc.

MediumHouse Robber✓ Our Solution

ArrayDynamic Programming

LeetCode ↗52% acc.

MediumLetter Combinations of a Phone Number✓ Our Solution

Hash TableStringBacktracking

LeetCode ↗64% acc.

MediumNumber of Distinct Islands

Hash TableDepth-First SearchBreadth-First SearchUnion Find+1

LeetCode ↗62% acc.

EasyPalindrome Linked List✓ Our Solution

Linked ListTwo PointersStackRecursion

LeetCode ↗56% acc.

Medium4Sum✓ Our Solution

ArrayTwo PointersSorting

LeetCode ↗38% acc.

MediumBasic Calculator II✓ Our Solution

MathStringStack

LeetCode ↗46% acc.

MediumCombination Sum✓ Our Solution

ArrayBacktracking

LeetCode ↗75% acc.

MediumTime Needed to Rearrange a Binary String✓ Our Solution

StringDynamic ProgrammingSimulation

LeetCode ↗52% acc.

MediumSubarray Sum Equals K✓ Our Solution

ArrayHash TablePrefix Sum

LeetCode ↗45% acc.

MediumNext Permutation✓ Our Solution

ArrayTwo Pointers

LeetCode ↗43% acc.

MediumGas Station✓ Our Solution

ArrayGreedy

LeetCode ↗46% acc.

MediumJump Game✓ Our Solution

ArrayDynamic ProgrammingGreedy

LeetCode ↗39% acc.

MediumFind Peak Element✓ Our Solution

ArrayBinary Search

LeetCode ↗47% acc.

MediumTarget Sum✓ Our Solution

ArrayDynamic ProgrammingBacktracking

LeetCode ↗51% acc.

MediumSingle Element in a Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗59% acc.

HardSliding Window Maximum✓ Our Solution

ArrayQueueSliding WindowHeap (Priority Queue)+1

LeetCode ↗48% acc.

MediumBinary Tree Zigzag Level Order Traversal✓ Our Solution

TreeBreadth-First SearchBinary Tree

LeetCode ↗62% acc.

MediumAmount of Time for Binary Tree to Be Infected✓ Our Solution

Hash TableTreeDepth-First SearchBreadth-First Search+1

LeetCode ↗64% acc.

MediumCoin Change✓ Our Solution

ArrayDynamic ProgrammingBreadth-First Search

LeetCode ↗46% acc.

EasyValid Palindrome✓ Our Solution

Two PointersString

LeetCode ↗51% acc.

HardWord Break II✓ Our Solution

ArrayHash TableStringDynamic Programming+3

LeetCode ↗54% acc.

EasyMerge Sorted Array✓ Our Solution

ArrayTwo PointersSorting

LeetCode ↗53% acc.

MediumFind Minimum in Rotated Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗53% acc.

MediumImplement Trie (Prefix Tree)✓ Our Solution

Hash TableStringDesignTrie

LeetCode ↗68% acc.

MediumPermutations✓ Our Solution

ArrayBacktracking

LeetCode ↗81% acc.

MediumFind First and Last Position of Element in Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗47% acc.

Medium3Sum✓ Our Solution

ArrayTwo PointersSorting

LeetCode ↗37% acc.

MediumPow(x, n)✓ Our Solution

MathRecursion

LeetCode ↗37% acc.

MediumSearch Suggestions System✓ Our Solution

ArrayStringBinary SearchTrie+2

LeetCode ↗65% acc.

MediumPartition Equal Subset Sum✓ Our Solution

ArrayDynamic Programming

LeetCode ↗48% acc.

HardMinimum Number of Taps to Open to Water a Garden✓ Our Solution

ArrayDynamic ProgrammingGreedy

LeetCode ↗51% acc.

MediumPopulating Next Right Pointers in Each Node✓ Our Solution

Linked ListTreeDepth-First SearchBreadth-First Search+1

LeetCode ↗65% acc.

MediumRotting Oranges✓ Our Solution

ArrayBreadth-First SearchMatrix

LeetCode ↗57% acc.

MediumRotate Array✓ Our Solution

ArrayMathTwo Pointers

LeetCode ↗43% acc.

HardMinimum One Bit Operations to Make Integers Zero✓ Our Solution

Dynamic ProgrammingBit ManipulationMemoization

LeetCode ↗73% acc.

MediumCheck if a Parentheses String Can Be Valid✓ Our Solution

StringStackGreedy

LeetCode ↗45% acc.