*&---------------------------------------------------------------------*
*TODO: Jerry can send Xun about new implementation on 2016-12-4 21:17PM - aircraft from Germany to China
*&---------------------------------------------------------------------*
REPORT Z_FIBO.
PARAMETERS: N type i,
v1 RADIOBUTTON GROUP v default 'X',
v2 RADIOBUTTON GROUP v.
data: f type i,
t type i.
data: product_guid type comm_product-product_guid.
get run time field t.
case 'X'.
when v1. perform fibonacci using n changing f.
when v2. perform fibonacci_2 using n changing f.
endcase.
write: / 'Fibonacci(', n, ') =', f.
get run time field t.
write: / 'Runtime', t, 'microseconds'.
*&---------------------------------------------------------------------*
*& Form fibonacci
*&---------------------------------------------------------------------*
form fibonacci using in type i
changing fib type i.
data: f_1 type i, f_2 type i,
n_1 type i, n_2 type i.
case in.
when 0. fib = 1.
when 1. fib = 1.
when others.
n_1 = in - 1.
n_2 = in - 2.
perform fibonacci using n_1 changing f_1.
perform fibonacci using n_2 changing f_2.
fib = f_1 + f_2.
endcase.
endform. "fibonacci
*&---------------------------------------------------------------------*
*& Form fibonacci_2
*&---------------------------------------------------------------------*
form fibonacci_2 using in type i
changing fib type i.
data: f_1 type i, f_2 type i,
n_1 type i, n_2 type i,
l type i.
data: fibo type table of i.
append 1 to fibo. " fibonacci(0)
append 1 to fibo. " fibonacci(1)
n_1 = 1.
n_2 = 2.
l = in - 1.
do l times.
read table fibo index n_1 into f_1.
read table fibo index n_2 into f_2.
fib = f_1 + f_2.
add 1 to n_1. add 1 to n_2.
append fib to fibo.
enddo.
endform. "fibonacci_2
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