Count Substrings Starting and Ending with Given Character | Leetcode 3084 | codestorywithMIK
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This is the 37th Video of our Playlist "Strings : Popular Interview Problems".
In this video we will try to solve a very good string practice problem : Count Substrings Starting and Ending with Given Character | Leetcode 3084
I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.
Also, please note that my Github solution link below contains both C++ as well as JAVA code.
Problem Name : Count Substrings Starting and Ending with Given Character | 2 Approaches | Leetcode 3084
Company Tags : will update soon
My solutions on Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/strings/Count%20Substrings%20Starting%20and%20Ending%20with%20Given%20Character.cpp
GfG Problem Link : https://leetcode.com/problems/count-substrings-starting-and-ending-with-given-character/description/
My DP Concepts Playlist : https://youtu.be/7eLMOE1jnls
My Graph Concepts Playlist : https://youtu.be/5JGiZnr6B5w
My Recursion Concepts Playlist : https://www.youtube.com/watch?v=pfb1Zduesi8&list=PLpIkg8OmuX-IBcXsfITH5ql0Lqci1MYPM
My GitHub Repo for interview preparation : https://github.com/MAZHARMIK/Interview_DS_Algo
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Approach Summary :
This C++ solution counts the number of substrings in a given string s that contain a specified character c. It iterates through each character in the string, incrementing a counter (count) whenever it encounters the specified character. For each occurrence of c, it adds the current count value plus one to the substrings variable. Finally, it returns the total count of substrings containing c. This approach utilizes a single loop to efficiently count the substrings.
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✨ Timelines✨
00:00 - Introduction
02:50 - Approach-1
06:39 - Approach-2
10:30 - Coding it up
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