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#!/bin/sh
//usr/bin/env rustc --test $0 -o kachow && ./kachow --nocapture; rm -f kachow ; exit
fn find_winner(moves: &[[usize; 2]]) -> String {
let mut board = [[' '; 3]; 3];
for (i, &[r, c]) in moves.iter().enumerate() {
board[r][c] = if i % 2 == 0 { 'A' } else { 'B' };
let player = board[r][c];
if (0..3).all(|j| board[r][j] == player)
|| (0..3).all(|j| board[j][c] == player)
|| (r == c && (0..3).all(|j| board[j][j] == player))
|| (r + c == 2 && (0..3).all(|j| board[j][2 - j] == player))
{
return player.to_string();
}
}
if moves.len() == 9 {
"Draw".to_string()
} else {
"Pending".to_string()
}
}
#[test]
fn example() {
assert_eq!(find_winner(&[[0, 0], [2, 0], [1, 1], [2, 1], [2, 2]]), "A");
assert_eq!(
find_winner(&[[0, 0], [1, 1], [0, 1], [0, 2], [1, 0], [2, 0]]),
"B"
);
assert_eq!(
find_winner(&[
[0, 0],
[1, 1],
[2, 0],
[1, 0],
[1, 2],
[2, 1],
[0, 1],
[0, 2],
[2, 2]
]),
"Draw"
);
assert_eq!(find_winner(&[[0, 0], [1, 1]]), "Pending");
assert_eq!(
find_winner(&[[1, 1], [0, 0], [2, 2], [0, 1], [1, 0], [0, 2]]),
"B"
);
}
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