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availablerookcaptures.cpp
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class Solution {
public:
int numRookCaptures(vector<vector<char>>& board) {
int i = 0, j;
int Rr, Rc;
int ans = 4;
bool flag = false;
while (!flag) {
for (j = 0; j < 8; j++) {
if (board[i][j] == 'R') {
flag = true;
Rr = i;
Rc = j;
break;
}
}
i++;
}
for (i = Rr + 1; i < 8; i++) {
if (board[i][Rc] != '.' && board[i][Rc] != 'p') {
ans--;
break;
}
if (board[i][Rc] == 'p')
break;
}
if (i == 8)
ans--;
for (i = Rr - 1; i > -1; i--) {
if (board[i][Rc] != '.' && board[i][Rc] != 'p') {
ans--;
break;
}
if (board[i][Rc] == 'p')
break;
}
if (i == -1)
ans--;
for (i = Rc + 1; i < 8; i++) {
if (board[Rr][i] != '.' && board[Rr][i] != 'p') {
ans--;
break;
}
if (board[Rr][i] == 'p')
break;
}
if (i == 8)
ans--;
for (i = Rc - 1; i > -1; i--) {
if (board[Rr][i] != '.' && board[Rr][i] != 'p') {
ans--;
break;
}
if (board[Rr][i] == 'p')
break;
}
if (i == -1)
ans--;
return ans;
}
};