import java.util.*;
import java.lang.*;
class Main
{
{
String player1
= "1465"; // solution String player2
= "6431"; // guess
for (int i = 0, j = player2.length(); i < j; i++)
{
if (player1.length() > i && player1.charAt(i) == ch) {
bulls++;
}
else if (0 <= (k = player1.indexOf(s))) {
cows++;
}
}
}
}
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