Keyword Analysis & Research: longest valid parentheses substring

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
longest valid parentheses substring	1.49	0.9	6259	66	35
longest	1.87	0.2	4354	69	7
valid	0.95	0.8	6654	57	5
parentheses	0.15	0.7	5919	33	11
substring	1.14	0.9	1635	37	9

Keyword	CPC	PCC	Volume	Score
longest valid parentheses substring	0.25	0.8	8721	93