Find the previous occurrence of pattern in string in Julia – findprev() Method

Last Updated : 26 Mar, 2020

The findprev() is an inbuilt function in julia which is used to return the previous occurrence of the specified pattern in specified string starting from specified position.

Syntax:
findnprev(pattern::AbstractString, string::AbstractString, start::Integer)

Parameters:

pattern::AbstractString: Specified pattern

string::AbstractString: Specified string

start::Integer: It is the start position before which matching going to be performed.

Returns: It returns the previous occurrence of the specified pattern in a specified string starting from the specified position.

Example 1:

# Julia program to illustrate  
# the use of String findprev() method 
   
# Here the pattern is "g", String is 
# "geeks" and position is 3 
Println(findprev("g", "geeks", 3)) 
  
# Here the pattern is "G", String is 
# "GeeksforGeeks" and position is 10 
Println(findprev("G", "GeeksforGeeks", 10)) 
  
# Here the pattern is "for", String is 
# "GeeksforGeeks" and position is 8 
Println(findprev("for", "GeeksforGeeks", 8)) 
  
# Here the pattern is "k", String is 
# "GeeksforGeeks" and position is 7 
Println(findprev("k", "GeeksforGeeks", 7)) 

Output:

Example 2:

# Julia program to illustrate  
# the use of String findprev() method 
   
# Here the pattern is "23", String is 
# "12345" and position is 5 
Println(findprev("23", "12345", 5)) 
  
# Here the pattern is "23", String is 
# "12345" and position is 4 
Println(findprev("23", "12345", 4)) 
  
# Here the pattern is "3", String is 
# "123123" and position is 6 
Println(findprev("3", "123123", 6)) 
  
# Here the pattern is "123", String is 
# "123123123" and position is 7 
Println(findprev("123", "123123123", 7)) 

Output:

Suggest improvement

Find the next occurrence of pattern in string in Julia - findnext() Method

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