Week 4: Tuesday
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Q1. (50)

Input from the user 8 pairs of values. The first value is the id of a job and
the second value is that of a machine. The pair signifies that the job can be
run on that machine. There can be at most four jobs, numbered from 0 to 3 while
there can be at most three machines, numbered 0 to 2. Output a formatted matrix
of jobs as rows and machines as columns. If a job can be run on a machine,
output the corresponding cell as 1, otherwise output it as 0.

Example:
If input is
0 0
0 2
2 2
3 0
3 1
0 0
1 1
2 1
output should be
1 0 1
0 1 0
0 1 1
1 1 0

Q2. (50)

Input a matrix of size 3x3. For each column, find the sum of the elements in
it. Output the matrix such that the columns are re-arranged in the increasing
order of their sums. If two columns have the same sum, output them in the order
they appeared in the original matrix.

Example:
If input is
1 4 8
9 2 9
8 6 0
then output should be
4 8 1
2 9 9
6 0 8