Getting java.util.NoSuchElementException

Question

Ich versuche, eine Lösung für eine problem zu implementieren. Der Code funktioniert wie ein Zauber in Eclipse aber gibt es folgende Ausnahmen, wenn in Hacker Rang IDE zusammengestellt:

Exception in thread "main" java.util.NoSuchElementException 
    at java.util.Scanner.throwFor(Scanner.java:862) 
    at java.util.Scanner.next(Scanner.java:1485) 
    at java.util.Scanner.nextInt(Scanner.java:2117) 
    at java.util.Scanner.nextInt(Scanner.java:2076) 
    at Solution.main(Solution.java:17) 

Hier ist der Code

import java.util.Scanner; 
class Ideone { 
    public static void main(String[] args) throws Exception { 
     Scanner input=new Scanner(System.in); 

     int test_case = input.nextInt(); 
     //System.out.println("test case"+test_case); 

     String ans[] = new String[test_case]; 

     for (int i = 0; i < test_case; i++) { 
      int row = input.nextInt(); 
      int col =input.nextInt(); 
      //System.out.println("row:"+ row+" col: "+col); 
      Result result = new Result(row, col); 
      result.putRandom(); 
      //result.display(); 
      result.getPattern(); 
      ans[i] = result.match(); 

     } 

     for (int i = 0; i < ans.length; i++) { 
      System.out.println(ans[i]); 
     } 

    } 

} 

class Result { 
    String[] matrix; 
    int rows; 
    int col; 

    int pattern_row; 
    int pattern_col; 
    String[] pattern_matrix; 
    Scanner inp=new Scanner(System.in); 

    public Result(int r, int c) { 
     rows = r; 
     col = c; 
     matrix = new String[rows]; 
    } 

    public void putRandom() throws Exception { 
     // System.out.println("Row:"+rows+" Colems:"+col); 
    //Scanner inp = new Scanner(System.in); 
     for (int i = 0; i < rows; i++) { 
      matrix[i] =inp.nextLine(); 
      //System.out.println("matrix[i] : "+matrix[i]); 
     } 
    } 

    public void display() { 
     for (int i = 0; i < rows; i++) { 
      System.out.print(matrix[i] + " "); 
      System.out.println(); 
     } 
    } 

    public void getPattern() throws Exception{ 
     int r= inp.nextInt(); 
     int c =inp.nextInt(); 

     pattern_row = r; 
     pattern_col = c; 
     //System.out.println("pAttern row"+pattern_row); 
     pattern_matrix = new String[pattern_row]; 
     putRandomInPattern(); 
    } 

    public void putRandomInPattern() throws Exception{ 
     //Scanner inp = new Scanner(System.in); 
     inp.nextLine(); 
     for (int i = 0; i < pattern_row; i++) { 
      pattern_matrix[i] = inp.nextLine(); 
     } 
     //display(); 
    } 

    public String match() { 
     String result = "NO"; 
     for (int r = 0; r < pattern_row; r++) { 
      int index = find(pattern_matrix[r]); 
      if (index != -1) { 
       result = isPatternPresent(index, r); 
       return result; 
      } 
     } 
     return result; 
    } 

    public String isPatternPresent(int index_matrix, int index_pattern) { 
     int matched = 0; 
     int j = index_pattern; 
     for (int i = index_matrix; i < (index_matrix+(pattern_row)); i++) { 
      if (matrix[i].contains(pattern_matrix[j])) { 
       matched++; 
       j++; 
      } 
     } 
     //System.out.println("matched:" + matched); 
     if (matched == pattern_row) 
      return "YES"; 
     return "NO"; 
    } 

    public int find(String elem) { 
     for (int i = 0; i < matrix.length; i++) { 
      if (matrix[i].contains(elem)) { 
       //System.out.println("found" + matrix[i]); 
       return i; 
      } 
     } 
     return -1; 
    } 

} 

Answer 1

etwas in diesem Teil geschieht

for (int i = 0; i < rows; i++) { 
     matrix[i] =inp.nextLine(); 
     //System.out.println("matrix[i] : "+matrix[i]); 
    } 

Ich denke, dass Sie den Scanner in die putRandom() -Methode übergeben sollten, wenn Sie es verwenden, anstatt einen neuen Scanner in dieser Klasse zu erstellen, der hackerrank

01 verheerend sein könnte

public void putRandom(Scanner scannerName) throws Exception { 
    Scanner inp = scannerName; 
    for (int i = 0; i < rows; i++) { 
     matrix[i] =inp.nextLine(); 
    } 
    inp.close(); 
}