/
ch-2.kt
35 lines (34 loc) · 957 Bytes
/
ch-2.kt
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fun kronecker(a: ArrayList<ArrayList<Int>>, b: ArrayList<ArrayList<Int>>): ArrayList<ArrayList<Int>> {
var o = ArrayList<ArrayList<Int>>()
val ax = a[0].size
val ay = a.size
val bx = b[0].size
val bY = b.size
for (y in 0..ay*bY - 1) {
val byi = y % bY
val ayi = y / bY
var row = ArrayList<Int>()
for (x in 0..ax*bx - 1) {
val bxi = x % bx
val axi = x / bx
row.add(a[ayi][axi] * b[byi][bxi])
}
o.add(row)
}
return o
}
fun main() {
if (kronecker(arrayListOf(arrayListOf(1,2),arrayListOf(3,4)),
arrayListOf(arrayListOf(5,6),arrayListOf(7,8))
) == arrayListOf(
arrayListOf( 5, 6, 10, 12),
arrayListOf( 7, 8, 14, 16),
arrayListOf(15, 18, 20, 24),
arrayListOf(21, 24, 28, 32)
)) {
print("Pass")
} else {
print("FAIL")
}
println("")
}