what is happening in this method?

Question

1.00/5 (2 votes)

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hi people
there is this method which i cannot get what it is doing

C#

bool IsPass()
      {
          for (int i = 0; i < 7; i++)
          {
              for (int j = 0; j < 7; j++)
              {
                  if (GenerateArray.a[i, j] != Resource.arr1[i, j]) return false ;
              }
          }
          return true;
      }

the main line i'm confused with is

C#

if (GenerateArray.a[i, j] != Resource.arr1[i, j]) return false ;
            }
        }
        return true;
    }

here generatearray and resouce are method
i can't actually understand what [i,j] will do and why return false and return true are written
please help

Posted 5-Jul-14 19:23pm

Member 10867024

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3 solutions

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George Jonsson · Accepted Answer · 2014-07-05T19:38:00

Solution 2

It is a comparison of values in two multi-dimensional arrays.
http://msdn.microsoft.com/en-us/library/2yd9wwz4.aspx[^]

C#

if (GenerateArray.a[i, j] != Resource.arr1[i, j]) 
  return false ;

So if the value in cell [i, j] for matrix GenerateArray.a is different from cell [i,j] in Resource.arr1 the method returns false.

Posted 5-Jul-14 19:38pm

George Jonsson

Comments

[no name] 6-Jul-14 1:42am

do you mean to say that i and j represent row and column of the array??
if yes then does i and j represent row and column respectively??

DamithSL · Accepted Answer · 2014-07-05T19:41:00

You better read about Multidimensional arrays and how to iterate over items of Multidimensional arrays.
check
Multidimensional Arrays (C# Programming Guide)[^]
C# 2D Array[^]

here GenerateArray.a and Resource.arr1 are 2D arrays and you are iterating over the items and comparing them.
below line compare same item in both arrays.

C#

GenerateArray.a[i, j] != Resource.arr1[i, j]

if above condition not satisfied then you found one item which not machining and return false and exist the method.
if all items are machining then your program will come to the return true line and exist the method with return value as true

Praveen Kumar Katiyar · Accepted Answer · 2014-07-05T19:34:00

Solution 1

You are simply comparing the items in the two arrays, if all items in one array matches to the all items in the second array, returns true, otherwise false.

Posted 5-Jul-14 19:34pm

Praveen Kumar Katiyar