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Drop a yellow disk at column (0-6): 3
| | | | | | | |
| | | | | | | |
| | | | | | | |
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| | | | | | | |
|R| | |Y| | | |
. . .
. . .
. . .
Drop a yellow disk at column (0-6): 6
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| | | | | | | |
| | | |R| | | |
| | | |Y|R|Y| |
| | |R|Y|Y|Y|Y|
|R|Y|R|Y|R|R|R|
———————————————
The yellow player won
*8.21
(
Central city
) Given a set of cities, the central city is the city that has the shortest
total distance to all other cities. Write a program that prompts the user to enter
the number of the cities and the locations of the cities (coordinates), and finds
the central city and its total distance to all other cities.
Enter the number of cities: 5
Enter the coordinates of the cities:
2.5 5 5.1 3 1 9 5.4 54 5.5 2.1
The central city is at (2.5, 5.0)
The total distance to all other cities is 60.81
*8.22
(
Even number of 1s
) Write a program that generates a 6-by-6 two-dimensional
matrix filled with 0s and 1s, displays the matrix, and checks if every row and
every column have an even number of 1s.
*8.23
(
Game: find the flipped cell
) Suppose you are given a 6-by-6 matrix filled with
0s and 1s. All rows and all columns have an even number of 1s. Let the user flip
one cell (i.e., flip from 1 to 0 or from 0 to 1) and write a program to find which
cell was flipped. Your program should prompt the user to enter a 6-by-6 array
with 0s and 1s and find the first row
r
and first column
c
where the even number
of the 1s property is violated (i.e., the number of 1s is not even). The flipped cell
is at (
r
,
c
). Here is a sample run:
VideoNote
Even number of 1s
Enter a 6-by-6 matrix row by row:
1 1 1 0 1 1
1 1 1 1 0 0
0 1 0 1 1 1
1 1 1 1 1 1
0 1 1 1 1 0
1 0 0 0 0 1
The flipped cell is at (0, 1)
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