Given two strings A and B, find if A is a subsequence of B.
Example 1:
Input:
A = AXY
B = YADXCP
Output: 0
Explanation: A is not a subsequence of B
as 'Y' appears before 'A'.
Example 2:
Input:
A = gksrek
B = geeksforgeeks
Output: 1
Explanation: A is a subsequence of B.
Your Task:
You dont need to read input or print anything. Complete the function isSubSequence() which takes A and B as input parameters and returns a boolean value denoting if A is a subsequence of B or not.
Expected Time Complexity: O(N) where N is length of string B. Expected Auxiliary Space: O(1)
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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