Python Program for Print Number series without using any loop
Problem – Givens Two number N and K, our task is to subtract a number K from N until number(N) is greater than zero, once the N becomes negative or zero then we start adding K until that number become the original number(N).
Note : Not allow to use any loop.
Examples :
Input : N = 15 K = 5 Output : 15 10 5 0 1 5 10 15 Input : N = 20 K = 6 Output : 20 14 8 2 -4 2 8 14 20
Explanation – We can do it using recursion idea is that we call the function again and again until N is greater than zero (in every function call we subtract N by K). Once the number becomes negative or zero we start adding K in every function call until the number becomes the original number. Here we use a single function for both addition and subtraction but to switch between addition or subtraction function we used a Boolean flag.
# Python program to Print Number # series without using loop def PrintNumber(N, Original, K, flag): #print the number print(N, end = " ") # change flag if number # become negative if (N <= 0): if(flag==0): flag = 1 else: flag = 0 # base condition for # second_case (Adding K) if (N == Original and (not(flag))): return # if flag is true # we subtract value until # number is greater then zero if (flag == True): PrintNumber(N - K, Original, K, flag) return # second case (Addition ) if (not(flag)): PrintNumber(N + K, Original, K, flag); return N = 20K = 6PrintNumber(N, N, K, True) # |
Output :
20 14 8 2 -4 2 8 14 20