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Golang Program To Interchange The Diagonals
In this article, we will write a go language program to interchange the diagonal elements of a matrix.
Exchange the diagonal elements of a matrix using an external function
In this program, we will write a go language program to interchange the diagonal elements of a 3 X 3 matrix using a user-defined function.
Algorithm
Step 1 − Import the fmt package.
Step 2 − Create a function to interchange the diagonal elements of the matrix. In this function, we have defined two variables of integer type and assigned values to them.
Step 3 − Use for loop to iterate over the matrix elements and store each element of the left diagonal temporarily in the t variable initialized above.
Step 4 − Now, store the elements of the right diagonal in place of the left one and store back the value stored in the temporary variable to the right diagonal.
Step 5 − Repeat these processes till whole diagonal elements are interchanged.
Step 6 − Now, start the main() function. Here, initialized a 3 X 3 matrix and print it on the screen.
Step 7 − Call the matrixInter() function by passing the matrix as an argument to the function.
Step 8 − Now, print the matrix on the screen using for loops and fmt.Println() function.
Example
package main import "fmt" // function to interchange rows func matrixInter(mat [][]int) { var t int = 0 var rows int = 3 var i int for i = 0; i < 3; i++ { t = mat[i][i] mat[i][i] = mat[i][rows-i-1] mat[i][rows-i-1] = t } } func main() { mat := [][]int{ {10, 1, 2}, {4, 5, 6}, {8, 9, 10}, } fmt.Println("The given matrix is: \n") for i := 0; i < 3; i++ { for j := 0; j < 3; j++ { fmt.Print(mat[i][j], "\t") } fmt.Println() } fmt.Println() matrixInter(mat) fmt.Println("The Matrix Items after Interchanging Diagonals is:") for i := 0; i < 3; i++ { for j := 0; j < 3; j++ { fmt.Print(mat[i][j], "\t") } fmt.Println() } }
Output
The given matrix is: 10 1 2 4 5 6 8 9 10 The Matrix Items after Interchanging Diagonals is: 2 1 10 4 5 6 10 9 8
Interchange The Diagonal Elements Of A Matrix Of Order 4 Or Above
In this program, we will write a go language program to interchange the elements of a matrix of order 4 or above using the main() function.
Algorithm
Step 1 − Import the fmt package.
Step 2 − Create a function to interchange the diagonal elements of the matrix. In this function, we have defined two variables of integer type and assigned values to them.
Step 3 − Use for loop to iterate over the matrix elements and store each element of the left diagonal temporarily in the t variable initialized above.
Step 4 − Now, store the elements of the right diagonal in place of the left one and store back the value stored in the temporarily variable to the right diagonal.
Step 5 − Repeat these processes until whole diagonal elements are interchanged.
Step 6 − Now, start the main() function. Here, initialized a 4 X 4 matrix or above and print it on the screen.
Step 7 − Call the matrixInter() function by passing the matrix as an argument to the function.
Step 8 − Now, print the matrix on the screen using for loops and fmt.Println() function.
Example
package main import "fmt" // function to interchange diagonals func matrixInter(mat [][]int) { var temp int = 0 var rows int = 4 var i int for i = range mat { temp = mat[i][i] mat[i][i] = mat[i][rows-i-1] mat[i][rows-i-1] = temp } } func main() { mat := [][]int{ {8, 9, 7, 6}, {4, 7, 6, 5}, {3, 2, 1, 8}, {9, 9, 7, 7}, } fmt.Println("The given matrix is: \n") for i := 0; i < 4; i++ { for j := 0; j < 4; j++ { fmt.Print(mat[i][j], "\t") } fmt.Println() } fmt.Println() matrixInter(mat) fmt.Println("The Matrix Items after Interchanging Diagonals is:") for i := 0; i < 4; i++ { for j := 0; j < 4; j++ { fmt.Print(mat[i][j], "\t") } fmt.Println() } }
Output
The given matrix is: 8 9 7 6 4 7 6 5 3 2 1 8 9 9 7 7 The Matrix Items after Interchanging Diagonals is: 6 9 7 8 4 6 7 5 3 1 2 8 7 9 7 9
Conclusion
We have successfully compiled and executed a go language program to interchange the diagonal elements of a matrix along with examples. In the first example, we have used the logic to interchange elements of a 3 X 3 matrix while in the second one we are extending the logic to matrices of the order 4 or above.
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