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for given array

s[] = {5,1,0,4,2,3}

1) length of array is not given.
2) If length of array is 5 content is guaranteed to be between 0 to 5. There is no repetition of numbers. Sample example for length(s, 3)
- a[3] = 4 , a[4] = 2, a[2] = 0, a[0] = 5, a[5] =3
returns length of 4 .

For given condition write subroutine
int length (s, 3)
- to find the number of steps it takes to find given value - It's a function api - that I was asked to write with the conditions - I cannot change parameters of the function - I have to make sure return value is correct

Additional Condition:

You cannot use any loop statements like for, while and so on -
You cannot use any global or static variables.
You cannot call other routines inside this routine
You cannot modify given function parameters - it stays length (s, n) only
You cannot change original array too