Summary

Let’s assume the method name TotalCount and the objective of this method is to count the total number of substrings in the input string ‘str’. The sum of the digit in the substrings is equal to or greater than the sum of the digits of the previous substring. 

Solution

Explanation

• In the above code, the TotalCount method initializes a 2D array. To show that the results have not yet been calculated, the array is filled with -1.

• The input string str, the current position pos in the string, the previous sum psum, and the memoization array dp are passed to the helper function named find by the TotalCount method.

• The total count of valid substrings that satisfy the given condition is determined by the recursive function known as the find method.

• If the current position pos is beyond the length of the string s, the function returns 1, indicating the end of the string.

Answered by:> >gujjulassr

Credit:> >GeekforGeeks

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