Matrix search no output

#1

i used the same approach as u have used in the editorial soln. but there is nothing in the output section…please help
CODE:
import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int m=sc.nextInt();
int i,j;
int a[][]=new int[n][m];
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
a[i][j]=sc.nextInt();
}
}
int ser=sc.nextInt();
if(ser<a[0][0] || ser>a[n-1][m-1])
{
System.out.println(“0”);
}
else
{
int r=0;
int c=m-1;
while(r < m-1 && c>=0)
{
if(a[r][c]<ser)
r++;
else if(a[r][c]>ser)
c–;
else
System.out.println(“1”);
}
}
}
}

#2

3 3
3 30 38
44 52 54
57 60 69
62

consider this given tc…62 is greater than 3 and 62 is less than 9 so your code will go and search 62 in the matrix…if you find 62 then you print 1 BUT IF YOU DONT FIND 62…then in that case you have to print 0…
comparing values with arr[0][0] and arr[m-1][n-1] will handle cases which dont lie in this range but what about those case which lie in this range BUT are still not present in the matrix…thus print 0 if you dont find 62…

the while loop condition should be r<m and not r<m-1…

i am attaching the modified code for your reference

#3

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