Problem intelligence
Check if a Parentheses String Can Be Valid
MEDIUM · 8 companies · Bracket Sequences · Greedy · Stack · String
Interview priority
50
medium
Target overlap
0/0
Recency
30
Trend
50
Frequency
81
Company observations
Amazonolder15.6
Amazonall15.7
Bloombergolder9.8
Bloombergall13.4
Expediaall54.1
Googleolder12.6
Googleall12.6
IBMolder37.9
IBMall33.4
Metaolder18
Metaall17
Molocoolder81.1
Molocoall80.4
ServiceNowolder65.9
ServiceNowall65.2
Why this score
unsolved100
high frequency81
Local progress
unseen