Print all subarrays of a given array

Given an array write an algorithm to print all the possible sub arrays. The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains an integer N denoting the size of the array A. Then in the next lines are N space separated values representing the array A. Print each sub-array element on a new-line.

t = int(input())
for z in range(t):
    n = int(input()) 
    a = list(map(int, input().split()))  

    for i in range(n):
        for j in range(i,n+1):
            for k in range(i,j):
                print(a[k], end=" ")
            print()

Sample Input

1
3
1 2 3 

Sample Output

1 
1 2 
1 2 3 
2 
2 3 
3

I’ve tried everything best I can do.

>Solution :

If your issue is that you have empty lines, simplify your code to directly slice the list will all needed items.

You can use unpacking in print to have space separated elements by default.

t = int(input())
for z in range(t):
    n = int(input()) 
    a = list(map(int, input().split()))  

    for i in range(n):
        for j in range(i+1,n+1):
            print(*a[i:j])

input/ouput:

1
3
1 2 3  # end of input
1
1 2
1 2 3
2
2 3
3