Recursion Time to try

#1

Can you provide solution to these problems:

  1. Multiplication of two numbers using recursion
  2. String to int conversion using recursion
#2

Hello @yath17,

I can provide you with a solution.
But, that wouldn’t help you in building the concepts.
So, I will suggest you to try to code these problems yourself.

You can refer to the following hints:

  1. Multiplication of two numbers
    Let a and b be the two numbers that you have to multiply.
    So,
    a*b= a+a+a+…+a(b times)
    Example:
    1.1. 3*2= 3+3(2 times)=6
    1.2. 4*3=4+4+4(3 times)=12

  2. String to int conversion:
    2.1. use the formula:
    string_to_int=string_to_int*10 +s[i]
    2.2. Pass the value of string_to_int and i(index) as 0 to the recursive function. s is the string passed
    2.3. then at every recursive pass, i+1 i.e. move to next location.
    2.4. pass string_to_int as reference.
    2.5. base condition: when you have traversed all the index of the string.

Let me know if you still face any issue.
Hope, this would help.
Give a like if you are satisfied.