SpiralMatrix

package main

import "fmt"

func main(){
    var n int
    fmt.Scanln(&n)
    matrix := make([][]int, n)
        for i := 0; i < n; i++ {
        matrix[i] = make([]int, n)
        }
    var top int= 0
    var down int= n - 1
    var left int= 0
    var right int= n - 1
    var dir int= 0
    var count int= 0

    for (top <= down && left <= right) {
        if (dir == 0) {
            for i := left; i <= right; i++ {
                count++
                matrix[top][i] = count
            }
            top++
        } else if (dir == 1) {
            for i := top; i <= down; i++ {
                count++
                matrix[i][right] = count
            }
            right--
        } else if (dir == 2) {
            for i := right; i >= left; i-- {
                count++
                matrix[down][i] = count
            }
            down--
        } else if (dir == 3) {
            for i :=  down; i >= top; i-- {
                count++
                matrix[i][left] = count
            }
            left++
        }
        dir = (dir + 1) % 4;
    }
    for i:=0;i<len(matrix);i++{
        for j:=0;j<len(matrix[i]);j++{
            fmt.Printf("%d ",matrix[i][j])
        }
    fmt.Println()
    }
}