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Ozon
Ozon
12 questions
Interview frequency breakdown: 30-day, 3-month, 6-month & all-time
6 Easy
5 Med
1 Hard
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12
questions
#56
Merge Intervals
Medium
array
NeetCode
100% Freq
3m
#896
Monotonic Array
Easy
array
WalkCCC
100% Freq
#20
Valid Parentheses
Easy
string
NeetCode
90% Freq
#394
Decode String
Medium
string
NeetCode
83% Freq
#1
Two Sum
Easy
array
NeetCode
74% Freq
#3
Longest Substring Without Repeating Characters
Medium
hash table
NeetCode
74% Freq
#121
Best Time to Buy and Sell Stock
Easy
array
NeetCode
74% Freq
#155
Min Stack
Medium
stack
NeetCode
74% Freq
#185
Department Top Three Salaries
Hard
database
WalkCCC
74% Freq
#242
Valid Anagram
Easy
hash table
NeetCode
74% Freq
#977
Squares of a Sorted Array
Easy
array
NeetCode
74% Freq
#184
Department Highest Salary
Medium
database
WalkCCC
70% Freq