初始化2D阵列

Question

I have the below Java code which I need to convert to Swift. First one is simply initializing a 2D array with a number of rows and columns.

double[][] VAR1 = new double[5][10];

Second one is initializing a 2D array with some initial values.

double[][] VAR2 = new double[][]{ {2.1, 4.3}, {5.4, 8.9},};

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I can't figure out how to do the first one.

But I have a shot at the second one. Not sure if it's correct though.

var var2: [[Double]] = [[2.1], [4.3], [5.4], [8.9]]

Answer 1

You're close - should be like this:

var var2: [[Double]] = [[2.1, 4.3], [5.4, 8.9]]

And for the first one:

var var1: [[Double]] = Array(repeating: Array(repeating: 0.0, count: 10), count: 5)