Given a number, we need to find sum of its digits using recursion.
Input : 12345 Output : 15 Input : 45632 Output :20
Now, the step by step process for a better understanding of how this algorithm works,
Lets, Take the example 12345
12345 % 10 which is equal-too 5 + and then send 12345/10 to next step.
1234 % 10 which is equal-too 4 + and then send 1234/10 to next step.
123 % 10 which is equal-too 3 + and then send 123/10 to next step.
12 % 10 which is equal-too 2 + and then send 12/10 to next step.
1 % 10 which is equal-too 1 and then send 1/10 to next step.
0 algorithm stops.
Here, following diagram will illustrate the process of recursion:
Sum of digits in 12345 is 15
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