code_projects_kotlin/STEP1_Basics/4_Double_array/main.kt

fun main() {
    val matrix: Array<Array<Int>> = Array(10) { Array<Int>(10) { 0 } }
    //matrix[0][0] = 1
    // Fill from left-top to right-top
    for (i in 0..9) {
        matrix[i][0] = i
    }
    // Fill from left-top to left-bottom
    for (i in 0..9) {
        matrix[0][i] = i
    }

    // Fill all other
    for (x in 1..9) {
        for (y in 1..9) {
            matrix[x][y] = x * y
        }
    }

    // Get output
    for (x in 0..9) {
        for (y in 0..9) {
            if (matrix[x][y] >= 10) {
                print("${matrix[x][y]} ")
            }
            else {
                print("${matrix[x][y]}  ")
            }
        }
        println()
    }
}