Shift Down A: A matrix of dimension R*C with alphabets A or B is passed as the input. The program must remove all occurrences of B and shift the occurrences of A down. The empty cells must be replaced with hyphens. Then the program must print the modified matrix as the output.
Boundary Condition(s):
2 <= R, C <= 50
Input Format:
The first line contains R and C separated by a space.
The next R lines, each containing C alphabets separated by a space.
Output Format:
The first R lines, each containing C characters separated by a space.
Example Input/Output 1:
Input:
3 4
A A B A
B B A A
A B A A
Output:
– – – A
A – A A
A A A A
Explanation:
After removing all the occurrences of B and replacing the empty cells with hyphens, the matrix becomes
A A – A
– – A A
A – A A
After shifting the occurrences of A down, the matrix becomes
– – – A
A – A A
A A A A
Example Input/Output 2:
Input:
4 5
B A A B B
A A A B A
B A B B A
A A B B B
Output:
– A – – –
– A – – –
A A A – A
A A A – A
r,c=map(int,input().split())
l=[list(input().split()) for _ in range(r)]
l=[list(i) for i in zip(*l)]
mat=[]
for i in l:
mat.append(['-']*i.count('B')+['A']*i.count('A'))
mat=[list(i) for i in zip(*mat)]
for i in mat:
print(*i)