24 lines
548 B
Text
24 lines
548 B
Text
// version 1.1.3
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typealias Vector = DoubleArray
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typealias Matrix = Array<Vector>
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fun Matrix.transpose(): Matrix {
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val rows = this.size
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val cols = this[0].size
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val trans = Matrix(cols) { Vector(rows) }
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for (i in 0 until cols) {
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for (j in 0 until rows) trans[i][j] = this[j][i]
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}
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return trans
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}
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// Alternate version
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typealias Matrix<T> = List<List<T>>
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fun <T> Matrix<T>.transpose(): Matrix<T> {
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return (0 until this[0].size).map { x ->
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(this.indices).map { y ->
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this[y][x]
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}
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}
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}
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