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how to get the indexes of all the occurences of words in string?

0

I want to get indexes of all the occurences of string_to_be_search

Input:

String line="hello this is prajakta , how are you?? hello this is prajakta!"
String text_to_search= "hello this is prajakta"

Here the occurrences of text_to_search is 2 so I need list of starting indexes

Output:

List l=[0,39]

Also I have tried a code below

 public List getIndexesOfMultipleOccuredString(String originalString,String textToSearch) 
 int i, last = 0, count = 0;
 List l = new ArrayList();
 do 
 i = originalString.indexOf(textToSearch, last);
 if (i != -1) l.add(i);
 last = i + textToSearch.length();
 while (i != -1);
 return l;

BUT
if my input is as follows

String line="hello this is prajakta ,i love to drive car and i am a carpainter"
String text_to_search="car"

Output:

It gives me two indexes as carpainter contains car which i don't want
Output should be [39]

android string indexing

share|improve this question

edited yesterday

PrajaktaParkhade

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What kind of solutions have you tried so far where the second scenario does not work as you would like?
  
  – SCCC
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @SCCC i have added my code
  
  – PrajaktaParkhade
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @zums: Please don't modify code posted by OP. It creates confusion and problems.
  
  – Rohit5k2
  yesterday
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Rohit5k2 I could not able modify directly the code. First it get reviewed.
  
  – zums
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Rohit5k2 you mean the output which posted above is correct for input??
  
  – zums
  yesterday
  

  
  
  
  

 | 
show 2 more comments

0

I want to get indexes of all the occurences of string_to_be_search

Input:

String line="hello this is prajakta , how are you?? hello this is prajakta!"
String text_to_search= "hello this is prajakta"

Here the occurrences of text_to_search is 2 so I need list of starting indexes

Output:

List l=[0,39]

Also I have tried a code below

 public List getIndexesOfMultipleOccuredString(String originalString,String textToSearch) 
 int i, last = 0, count = 0;
 List l = new ArrayList();
 do 
 i = originalString.indexOf(textToSearch, last);
 if (i != -1) l.add(i);
 last = i + textToSearch.length();
 while (i != -1);
 return l;

BUT
if my input is as follows

String line="hello this is prajakta ,i love to drive car and i am a carpainter"
String text_to_search="car"

Output:

It gives me two indexes as carpainter contains car which i don't want
Output should be [39]

android string indexing

share|improve this question

edited yesterday

PrajaktaParkhade

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What kind of solutions have you tried so far where the second scenario does not work as you would like?
  
  – SCCC
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @SCCC i have added my code
  
  – PrajaktaParkhade
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @zums: Please don't modify code posted by OP. It creates confusion and problems.
  
  – Rohit5k2
  yesterday
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Rohit5k2 I could not able modify directly the code. First it get reviewed.
  
  – zums
  yesterday
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Rohit5k2 you mean the output which posted above is correct for input??
  
  – zums
  yesterday
  

  
  
  
  

 | 
show 2 more comments

I want to get indexes of all the occurences of string_to_be_search

Input:

String line="hello this is prajakta , how are you?? hello this is prajakta!"
String text_to_search= "hello this is prajakta"

Here the occurrences of text_to_search is 2 so I need list of starting indexes

Output:

List l=[0,39]

Also I have tried a code below

 public List getIndexesOfMultipleOccuredString(String originalString,String textToSearch) 
 int i, last = 0, count = 0;
 List l = new ArrayList();
 do 
 i = originalString.indexOf(textToSearch, last);
 if (i != -1) l.add(i);
 last = i + textToSearch.length();
 while (i != -1);
 return l;

BUT
if my input is as follows

String line="hello this is prajakta ,i love to drive car and i am a carpainter"
String text_to_search="car"

Output:

It gives me two indexes as carpainter contains car which i don't want
Output should be [39]

android string indexing

share|improve this question

edited yesterday

PrajaktaParkhade

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

String line="hello this is prajakta , how are you?? hello this is prajakta!"
String text_to_search= "hello this is prajakta"

List l=[0,39]

 public List getIndexesOfMultipleOccuredString(String originalString,String textToSearch) 
 int i, last = 0, count = 0;
 List l = new ArrayList();
 do 
 i = originalString.indexOf(textToSearch, last);
 if (i != -1) l.add(i);
 last = i + textToSearch.length();
 while (i != -1);
 return l;

String line="hello this is prajakta ,i love to drive car and i am a carpainter"
String text_to_search="car"

It gives me two indexes as carpainter contains car which i don't want
Output should be [39]

android string indexing

android string indexing

share|improve this question

edited yesterday

PrajaktaParkhade

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

share|improve this question

edited yesterday

PrajaktaParkhade

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

asked yesterday

PrajaktaParkhadePrajaktaParkhade

136

1 Answer
1

active

oldest

votes

0

This is how you do it using regex(word matching)

String line= "hello this is prajakta , how are you?? hello this is prajakta!";
String text_to_search = "\bhello this is prajakta\b";
ArrayList<Integer> list = new ArrayList<>();
Pattern p = Pattern.compile(text_to_search);
Matcher m = p.matcher(line);

while (m.find()) 
 list.add(m.start());


Log.i("All occurrences", "values are " + list.toString());

Output: [0, 39]

If you search using these strings

String line="hello this is prajakta ,i love to drive car and i am a carpainter";
String text_to_search="car";// use as "\bcar\b"

Output [40]

share|improve this answer

edited yesterday

zums

959619

answered yesterday

Rohit5k2Rohit5k2

14.6k42651

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you so much !!!!
  
  – PrajaktaParkhade
  yesterday
  

  
  
  
  

add a comment | 

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0

This is how you do it using regex(word matching)

String line= "hello this is prajakta , how are you?? hello this is prajakta!";
String text_to_search = "\bhello this is prajakta\b";
ArrayList<Integer> list = new ArrayList<>();
Pattern p = Pattern.compile(text_to_search);
Matcher m = p.matcher(line);

while (m.find()) 
 list.add(m.start());


Log.i("All occurrences", "values are " + list.toString());

Output: [0, 39]

If you search using these strings

String line="hello this is prajakta ,i love to drive car and i am a carpainter";
String text_to_search="car";// use as "\bcar\b"

Output [40]

share|improve this answer

edited yesterday

zums

959619

answered yesterday

Rohit5k2Rohit5k2

14.6k42651

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you so much !!!!
  
  – PrajaktaParkhade
  yesterday
  

  
  
  
  

add a comment | 

0

This is how you do it using regex(word matching)

String line= "hello this is prajakta , how are you?? hello this is prajakta!";
String text_to_search = "\bhello this is prajakta\b";
ArrayList<Integer> list = new ArrayList<>();
Pattern p = Pattern.compile(text_to_search);
Matcher m = p.matcher(line);

while (m.find()) 
 list.add(m.start());


Log.i("All occurrences", "values are " + list.toString());

Output: [0, 39]

If you search using these strings

String line="hello this is prajakta ,i love to drive car and i am a carpainter";
String text_to_search="car";// use as "\bcar\b"

Output [40]

share|improve this answer

edited yesterday

zums

959619

answered yesterday

Rohit5k2Rohit5k2

14.6k42651

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you so much !!!!
  
  – PrajaktaParkhade
  yesterday
  

  
  
  
  

add a comment | 

This is how you do it using regex(word matching)

String line= "hello this is prajakta , how are you?? hello this is prajakta!";
String text_to_search = "\bhello this is prajakta\b";
ArrayList<Integer> list = new ArrayList<>();
Pattern p = Pattern.compile(text_to_search);
Matcher m = p.matcher(line);

while (m.find()) 
 list.add(m.start());


Log.i("All occurrences", "values are " + list.toString());

Output: [0, 39]

If you search using these strings

String line="hello this is prajakta ,i love to drive car and i am a carpainter";
String text_to_search="car";// use as "\bcar\b"

Output [40]

share|improve this answer

edited yesterday

zums

959619

answered yesterday

Rohit5k2Rohit5k2

14.6k42651

String line= "hello this is prajakta , how are you?? hello this is prajakta!";
String text_to_search = "\bhello this is prajakta\b";
ArrayList<Integer> list = new ArrayList<>();
Pattern p = Pattern.compile(text_to_search);
Matcher m = p.matcher(line);

while (m.find()) 
 list.add(m.start());


Log.i("All occurrences", "values are " + list.toString());

String line="hello this is prajakta ,i love to drive car and i am a carpainter";
String text_to_search="car";// use as "\bcar\b"

share|improve this answer

edited yesterday

zums

959619

answered yesterday

Rohit5k2Rohit5k2

14.6k42651

edited yesterday

zums

959619

edited yesterday

zums

959619

answered yesterday

Rohit5k2Rohit5k2

14.6k42651

answered yesterday

Rohit5k2Rohit5k2

14.6k42651