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Java1DArrayPart2.java
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68 lines (51 loc) · 1.61 KB
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package DataStructure;
import java.util.*;
public class Java1DArrayPart2 {
private static int leap = 0;
private static int[] game;
private static int[] went;
private static int length;
public static boolean play(int index)
{
went[index] = 1;
if (index + 1 == length && game[length] == 0) {
return true;
}
if (leap > 1) {
if (index + leap > length) {
return true;
}
if (game[index + leap] == 0 && went[index + leap] == 0 && play(index + leap)) {
return true;
}
}
if (game[index + 1] == 0 && went[index + 1] == 0 && play(index + 1)) {
return true;
}
if (index - 1 >= 0 && game[index - 1] == 0 && went[index - 1] == 0 && play(index - 1)) {
return true;
}
return false;
}
public static boolean canWin(int leap, int[] game) {
Java1DArrayPart2.went = new int[game.length];
Java1DArrayPart2.game = game;
Java1DArrayPart2.leap = leap;
Java1DArrayPart2.length = game.length - 1;
return play(0);
}
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int q = scan.nextInt();
while (q-- > 0) {
int n = scan.nextInt();
int leap = scan.nextInt();
int[] game = new int[n];
for (int i = 0; i < n; i++) {
game[i] = scan.nextInt();
}
System.out.println( (canWin(leap, game)) ? "YES" : "NO" );
}
scan.close();
}
}