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Question bank
Interview questions.
Frequently asked coding problems at HCL.
View all problems
9 of 9 questions
#001
Two Sum
Easy
#002
Longest Substring Without Repeating Characters
Med
#003
Palindrome Number
Easy
#004
Longest Common Prefix
Easy
#005
3Sum
Med
#006
Valid Parentheses
Easy
#007
Group Anagrams
Med
#008
Merge Sorted Array
Easy
#009
Reverse String
Easy
All 9 questions loaded