nd4j-backends/nd4j-api-parent/nd4j-api/src/main/java/org/nd4j/linalg/factory/BaseNDArrayFactory.java
@Override
    public INDArray rand(char order, long rows, long columns) {
        return Nd4j.getRandom().nextDouble(order, new long[] {rows, columns});
    }
@Override
    public INDArray rand(char order, long rows, long columns) {
        return Nd4j.getRandom().nextDouble(order, new long[] {rows, columns});
    }
Create a random (uniform 0-1) NDArray with the specified shape and order
@param order      Order ('c' or 'f') of the output array
@param rows       Number of rows of the output array
@param columns    Number of columns of the output array