The find() method returns the lowest index of the substring if it is found in given string. If its is not found then it returns -1.
sub : It’s the substring which needs to be searched in the given string.
start : Starting position where sub is needs to be checked within the string.
end : Ending position where suffix is needs to be checked within the string.
NOTE : If start and end indexes are not provided then by default it takes 0 and length-1 as starting and ending indexes where ending indxes is not included in our search.
returns the lowest index of the substring if it is found in given string. If it’s not found then it returns -1.
The find() method is similar to index(). The only difference is find() returns -1 if searched string is not found and index() throws an exception in this case.
Substring 'geeks' found at index: 0 Substring 'for ' found at index: 6 Doesn't contains given substring
10 -1 -1 6
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