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Find All Anagrams in a String
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15 mins
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Find All Anagrams in a String

Contributed by
Prashansa
Easy
0/40
Avg time to solve 15 mins
Success Rate 85 %
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Problem Statement

Note:

``````1. Both STR and PTR consist of English uppercase letters.
2. Length of string 'STR' will always be greater than or equal to the length of string ‘PTR’.
3. In case, there is no anagram substring, then return an empty sequence.
4. In case of more than one anagrams, return the indices in increasing order.
``````
Detailed explanation ( Input/output format, Notes, Constraints, Images )
Sample Input 1 :
``````2
10 3
CBAEBABACD
ABC
5 2
BA
``````
Sample Output 1 :
``````0 6
0 1
``````
Explanation For Sample Output 1:
``````Test Case 1:

'STR' is ‘CBAEBABACD’ and ‘PTR’ is ‘ABC’.

0-2 in 'STR' index 0,1,2 are ‘CBA’, and it is an anagram with ‘ABC’.
1-3 in 'STR' index 1,2,3 are ‘BAE’, and it is not anagram with ‘ABC’.
2-4 in 'STR' index 2,3,4 are ‘AEB’, and it is not anagram with ‘ABC’.
3-5 in 'STR' index 3,4,5 are ‘EBA’, and it is not anagram with ‘ABC’.
4-6 in 'STR' index 4,5,6 are ‘BAB’, and it is not anagram with ‘ABC’.
5-7 in 'STR' index 5,6,7 are ‘ABA’, and it is not anagram with ‘ABC’.
6-8 in 'STR' index 6,7,8 are ‘BAC’, and it is an anagram with ‘ABC’.
7-9 in 'STR' index 7,8,9 are ‘ACD’, and it is not anagram with ‘ABC’.

Hence, there are only two substrings in the given string 'STR'  that are anagram with given string  ‘PTR’ which are ‘CBA’, and ‘BAC’ and starting indices of respective anagram substrings are 0 and 6.

Test case 2:

'STR' is ‘ABADE’ and ‘PTR’ is ‘BA’.

In the given string ‘ABADE’ the substring of length 2 starting with index 0 is ‘AB’ which is an anagram with the string ‘BA’ and a substring of length 2 starting with index 1 is ‘BA’ which is also an anagram with the string ‘BA’. Because 0 and 1 are starting indices of the substrings, we print 0 and 1.
``````
Sample Input 2:
``````2
10 4
BACDGABCDA
ABCD
7 1
ABABABA
A
``````
Sample Output 2:
``````0 5 6
0 2 4 6
``````
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