New update is available. Click here to update.

Solve problems & track your progress

Checkout your overall progress in every topic here

Become

Sensei

in DSA topics

Open the topic and solve more problems associated with it to improve your skills

Check out the skill meter for every topic

See how many problems you are left with to solve for cracking any stage. Score more than zero to get your progress counted.

Problem

Submissions

Palindromic Substrings

Contributed by

Arindam Majumder

Medium

0/80

Avg time to solve 20 mins

Success Rate 80 %

74 upvotes

Problem Statement

You have been given a string STR. Your task is to find the total number of palindromic substrings of STR.

Example :

If the input string is "abbc", then all the possible palindromic substrings would be: ["a", "b", "b", c", "bb"] and hence, the output will be 5 since we have 5 substrings in total which form a palindrome.

Note :

A string is said to be a 'Palindrome' if it is read the same forwards and backwards. 
For example, “abba” is a palindrome, but “abbc” is not.

A 'Substring' is a contiguous sequence of characters within a string. 
For example, "a", "b", "c", "ab", "bc", "abc" are substrings of "abc".

Detailed explanation ( Input/output format, Notes, Constraints, Images )

Input format :

The first line contains an integer 't' which denotes the number of test cases or queries to be run. Then the test cases follow.

The first and only line of each test case contains the string STR for which you have to count the number of palindromic substrings.

Output Format :

For each test case, return the total number of palindromic substrings possible.

Output for each test case will be printed in a separate line.

Note

You are not required to print anything, it has already been taken care of. Just implement the function.

Constraints :

1 <= t <= 100
0 <= N <= 1000

Where 't' is the number of test cases, 'N' is the length of the given string.
Time Limit: 1 sec.

Sample Input 1 :

1
abc

Sample Output 1 :

Explanation For Sample Output 1:

All the substrings of the given string are "a", "b", "c", "ab", "bc", "abc".
The plaindromics substrings are "a", "b", "c". So the output will be 3.

Sample Input 2 :

1
aaa

Sample Output 2 :

Auto

Console