I am solving problems at HackerEarth and I am not able to figure out why my program in running correctly on my command line and giving right result but when running on their code editor it is giving java.util.NoSuchElementException
exception.
I searched but couldn't resolve it.
import java.util.Scanner;
public class TestClass {
public static int[][] arr = null;
public static int[][] dp = null;
public static void main(String[] args) {
int N, M, T;
int min;
int count = 0;
Scanner scan = new Scanner(System.in);
N = scan.nextInt();
M = scan.nextInt();
arr = new int[N][M];
dp = new int[N + 1][M + 1];
for (int i = 0; i < N; ++i) {
for (int j = 0; j < M; ++j) {
arr[i][j] = scan.nextInt(); //line 26
}
}
for (int i = 0; i < M + 1; ++i)
dp[0][i] = 0;
for (int i = 0; i < N + 1; ++i)
dp[i][0] = 0;
for (int i = 1; i < N + 1; ++i) {
for (int j = 1; j < M + 1; ++j) {
if (arr[i - 1][j - 1] == 0) {
min = Math.min(dp[i - 1][j], Math.min(dp[i]
[j - 1], dp[i - 1][j - 1]));
dp[i][j] = min + 1;
} else
dp[i][j] = 0;
}
}
count = 0;
for (int i = 1; i < N + 1; ++i) {
for (int j = 1; j < M + 1; ++j) {
if (dp[i][j] != 0)
count += dp[i][j];
}
}
System.out.println("" + count);
}//main
}//class
Exception:
Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:907)
at java.util.Scanner.next(Scanner.java:1530)
at java.util.Scanner.nextInt(Scanner.java:2160)
at java.util.Scanner.nextInt(Scanner.java:2119)
at TestClass.main(editor_trsource_1429355115_85417.java:26)
This means you don't have data from standard input and you are trying to get nextInt
from the same. You should probably check if you have data to consumer using hasNextInt like:
if (scanner.hasNextInt()) {
//read nextInt();
}
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