Given two sorted arrays A and B of size M and N respectively. Each array may have some elements in common with the other array. Find the maximum sum of a path from the beginning of any array to the end of any of the two arrays. We can switch from one array to another array only at the common elements.Both the arrays are sorted.
Note: Only one repeated value is considered in the valid path sum.
Example 1:
Input:
M = 5, N = 4
A[] = {2,3,7,10,12}
B[] = {1,5,7,8}
Output: 35
Explanation: The path will be 1+5+7+10+12
= 35.
Example 2:
Input:
M = 3, N = 3
A[] = {1,2,3}
B[] = {3,4,5}
Output: 15
Explanation: The path will be 1+2+3+4+5=15.
Your Task:
You don't need to read input or print anything. Complete the function max_path_sum() which takes the two arrays A and B along with their sizes M and N as input parameters. It returns the maximum path sum.
Expected Time Complexity: O(M + N) 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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