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ServiceNow
65 questions
Interview frequency breakdown: 30-day, 3-month, 6-month & all-time
6 Easy
45 Med
14 Hard
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65
questions
#146
LRU Cache
Medium
hash table
NeetCode
100% Freq
#920
Number of Music Playlists
Hard
math
WalkCCC
100% Freq
3m
#3
Longest Substring Without Repeating Characters
Medium
hash table
NeetCode
92% Freq
#2318
Number of Distinct Roll Sequences
Hard
dynamic programming
WalkCCC
92% Freq
#3106
Lexicographically Smallest String After Operations With Constraint
Medium
string
WalkCCC
92% Freq
#3203
Find Minimum Diameter After Merging Two Trees
Hard
tree
WalkCCC
92% Freq
#3953
Maximum Score with Co-Prime Element
Hard
array
WalkCCC
92% Freq
#140
Word Break II
Hard
array
NeetCode
90% Freq
6m
#42
Trapping Rain Water
Hard
array
NeetCode
88% Freq
#200
Number of Islands
Medium
array
NeetCode
84% Freq
#11
Container With Most Water
Medium
array
NeetCode
80% Freq
#41
First Missing Positive
Hard
array
NeetCode
80% Freq
#443
String Compression
Medium
two pointers
WalkCCC
80% Freq
#22
Generate Parentheses
Medium
string
NeetCode
79% Freq
#20
Valid Parentheses
Easy
string
NeetCode
74% Freq
#122
Best Time to Buy and Sell Stock II
Medium
array
NeetCode
74% Freq
#239
Sliding Window Maximum
Hard
array
NeetCode
74% Freq
#424
Longest Repeating Character Replacement
Medium
hash table
NeetCode
74% Freq
#21
Merge Two Sorted Lists
Easy
linked list
NeetCode
66% Freq
#45
Jump Game II
Medium
array
NeetCode
66% Freq
#53
Maximum Subarray
Medium
array
NeetCode
66% Freq
#322
Coin Change
Medium
array
NeetCode
66% Freq
#1944
Number of Visible People in a Queue
Hard
array
WalkCCC
66% Freq
#1963
Minimum Number of Swaps to Make the String Balanced
Medium
two pointers
WalkCCC
66% Freq
#2116
Check if a Parentheses String Can Be Valid
Medium
string
WalkCCC
66% Freq
#1
Two Sum
Easy
array
NeetCode
56% Freq
#5
Longest Palindromic Substring
Medium
two pointers
NeetCode
56% Freq
#17
Letter Combinations of a Phone Number
Medium
hash table
NeetCode
56% Freq
#18
4Sum
Medium
array
NeetCode
56% Freq
#31
Next Permutation
Medium
array
WalkCCC
56% Freq
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