Check Whether Two Matrices Are Equal in Go

In this tutorial, we will write a golang program to check whether two matrices are equal or not. A matrix is a collection of numbers arranged in rows and columns, a two-dimensional array.

Check Whether Two Matrices are Equal or Not using If Statment

In this example we will compare the equality of two matrices using if condition statements.

Algorithm

Step 1 ? Import the fmt package.

Step 2 ? Start the main() function.

Step 3 ? Initialize and assign values the two matrices.

Step 4 ? Print these matrices on the screen.

Step 5 ? Now use the equality(==) operator to check whether given matrices are equal or not.

Step 6 ? Print the result accordingly back to the screen.

Example

package main
import (
   "fmt"
)
func main() {
   var i, j int
   matrixA := [3][3]int{
      {0, 1, 2},
      {4, 5, 6},
      {8, 9, 10},
   }
   matrixB := [3][3]int{
      {10, 11, 12},
      {13, 14, 15},
      {16, 17, 18},
   }
   fmt.Println("The first matrix is:")
   for i = 0; i < 3; i++ {
      for j = 0; j < 3; j++ {
         fmt.Print(matrixA[i][j], "\t")
      }
      fmt.Println()
   }
   fmt.Println()
   fmt.Println("The second matrix is:")
   for i = 0; i < 3; i++ {
      for j = 0; j < 3; j++ {
         fmt.Print(matrixB[i][j], "\t")
      }
      fmt.Println()
   }
   fmt.Println()
   if matrixA == matrixB {
      fmt.Println("The First Matrix and the Second Matrix are Equal")
   } else {
      fmt.Println("The First Matrix is Not Equal to the Second Matrix")
   }
}

Output

The first matrix is:
0	1	2	
4	5      6	
8	9	10	

The second matrix is:
10	11	12	
13	14	15	
16	17	18	

The First Matrix is Not Equal to the Second Matrix

Check Whether Two Matrices are Equal or Not Using For Loop

Let us now look at another method using which we can check the equality of two matrices.

Algorithm

Step 1 ? Import the fmt package.

Step 2 ? Start the main() function.

Step 3 ? Initialize and assign values to two matrices.

Step 4 ? Print these matrices on the screen. Now use the for loops to check whether each element of one matrix is equal to the elements of other or not.

Step 5 ? Initialize a variable called isequal and assign it a value of one. Use for loops to iterate over the matrix.

Step 6 ? If any of the element of the two matrices comes out to be different then flip the value of isequal to zero and break the loop.

Step 7 ? Once the loop is completed use the if condition to equate the value of isequal variable whose value comes out to be zero only if the elements are not same.

Step 8 ? Now print the result on the screen.

Example

package main
import (
   "fmt"
)
func main() {
   var i, j int
   matrixA := [3][3]int{
      {0, 1, 2},
      {4, 5, 6},
      {8, 9, 10},
   }
   matrixB := [3][3]int{
      {0, 1, 2},
      {4, 5, 6},
      {8, 9, 10},
   }
   fmt.Println("The first matrix is:")
   for i = 0; i < 3; i++ {
      for j = 0; j < 3; j++ {
         fmt.Print(matrixA[i][j], "\t")
      }
      fmt.Println()
   }
   fmt.Println()
   fmt.Println("The second matrix is:")
   for i = 0; i < 3; i++ {
      for j = 0; j < 3; j++ {
         fmt.Print(matrixB[i][j], "\t")
      }
      fmt.Println()
   }
   fmt.Println()
   isequal := 1
   for i = 0; i < 3; i++ {
      for j = 0; j < 3; j++ {
         if matrixA[i][j] != matrixB[i][j] {
            isequal = 0
            break
         }
      }
   }
   if isequal == 1 {
      fmt.Println("The First Matrix and the Second Matrix are Equal")
   } else {
      fmt.Println("The First Matrix is Not Equal to the Second Matrix")
   }
}

Output

The first matrix is:
0	1	2	
4	5	6	
8	9	10	

The second matrix is:
0	1	2	
4	5	6	
8	9	10	

The First Matrix and the Second Matrix are Equal

Conclusion

We have successfully compiled and executed a golang code to check whether the two matrices are equal or not.