Collection - II | tutorials

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Collection - II

1. Match quoted words
Word Wrap
Find and match all the quoted word in the given text. We can achieve this output in two ways.
Enter input string
Thoreau argues that people blindly accept "shams and delusions" as the "soundest truths", while regarding reality as "fabulous".
"[^"]+" looks for a quote " followed by one or more non-quotes [^"], and then the closing quote ".
Enter regex pattern
i - Ignore Case
g - Global Match
m - Multiline
s - Dot All
u - Unicode
y - Sticky
With lastIndex^?
/"[^"]+"/gCount:3
Thoreau argues that people blindly accept "shams and delusions" as the "soundest truths", while regarding reality as "fabulous".
match position
"shams and delusions" 42
"soundest truths" 72
"fabulous" 118
Using the non-greedy pattern ".+?", we get the same output.
Enter regex pattern
i - Ignore Case
g - Global Match
m - Multiline
s - Dot All
u - Unicode
y - Sticky
With lastIndex^?
/".+?"/gCount:3
Thoreau argues that people blindly accept "shams and delusions" as the "soundest truths", while regarding reality as "fabulous".
match position
"shams and delusions" 42
"soundest truths" 72
"fabulous" 118
2. Match words with doubled letters
Word Wrap
Find and match all the words with doubled letters in the given text.
Enter input string
The successful bookkeeper's favorite paragraph: His sole child, my lord, and bequeathed to my overlooking. I have those hopes of her good that her education promises. Her dispositions she inherits, which makes fair gifts fairer; for where an unclean mind carries virtuous qualities, there commendations go with pity--they are virtues and traitors too. In her they are the better for their simpleness. She derives her honesty and achieves her goodness, happiness and respect.
Firstly, let match all the doubled letters with ([a-z])\1. In this pattern, the combination of capturing group and back reference is used.
Enter regex pattern
i - Ignore Case
g - Global Match
m - Multiline
s - Dot All
u - Unicode
y - Sticky
With lastIndex^?
/([a-z])\1/gCount:16
The successful bookkeeper's favorite paragraph: His sole child, my lord, and bequeathed to my overlooking. I have those hopes of her good that her education promises. Her dispositions she inherits, which makes fair gifts fairer; for where an unclean mind carries virtuous qualities, there commendations go with pity--they are virtues and traitors too. In her they are the better for their simpleness. She derives her honesty and achieves her goodness, happiness and respect.
match position $1
cc 6 c
ss 9 s
oo 16 o
kk 18 k
ee 20 e
oo 99 o
oo 134 o
rr 257 r
mm 291 m
oo 348 o
tt 374 t
ss 397 s
oo 443 o
ss 448 s
pp 454 p
ss 459 s
And then extend the match up to the word boundary using \b. Find out why the word simpleness is not matched here.
Enter regex pattern
i - Ignore Case
g - Global Match
m - Multiline
s - Dot All
u - Unicode
y - Sticky
With lastIndex^?
/\b\w+([a-z])\1\w+\b/gCount:9
The successful bookkeeper's favorite paragraph: His sole child, my lord, and bequeathed to my overlooking. I have those hopes of her good that her education promises. Her dispositions she inherits, which makes fair gifts fairer; for where an unclean mind carries virtuous qualities, there commendations go with pity--they are virtues and traitors too. In her they are the better for their simpleness. She derives her honesty and achieves her goodness, happiness and respect.
match position $1
successful 4 s
bookkeeper 15 e
overlooking 94 o
good 133 o
carries 255 r
commendations 289 m
better 372 t
goodness 442 o
happiness 452 p

match	position	$1
cc	6	c
ss	9	s
oo	16	o
kk	18	k
ee	20	e
oo	99	o
oo	134	o
rr	257	r
mm	291	m
oo	348	o
tt	374	t
ss	397	s
oo	443	o
ss	448	s
pp	454	p
ss	459	s

match	position	$1
successful	4	s
bookkeeper	15	e
overlooking	94	o
good	133	o
carries	255	r
commendations	289	m
better	372	t
goodness	442	o
happiness	452	p

match	position
"shams and delusions"	42
"soundest truths"	72
"fabulous"	118

match	position
"shams and delusions"	42
"soundest truths"	72
"fabulous"	118

match	position	$1
cc	6	c
ss	9	s
oo	16	o
kk	18	k
ee	20	e
oo	99	o
oo	134	o
rr	257	r
mm	291	m
oo	348	o
tt	374	t
ss	397	s
oo	443	o
ss	448	s
pp	454	p
ss	459	s

match	position	$1
cc	6	c
ss	9	s
oo	16	o
kk	18	k
ee	20	e
oo	99	o
oo	134	o
rr	257	r
mm	291	m
oo	348	o
tt	374	t
ss	397	s
oo	443	o
ss	448	s
pp	454	p
ss	459	s