Rotom is not, in and of itself, a living inanimate object. It's more like a living spark of electricity. It has no evolutionary tree, but it does learn to inhabit a variety of household objects, gaining different abilities. At different points in the series, Rotom has been a microwave, a washing machine, and a lawn mower, and it has even served as the basis for smartphones in modern Pokémon video games.
To discover more fascinating science content, head to bbc.co.uk, search for BBC Inside Science and follow the links to The Open University.，更多细节参见同城约会
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2. 合并：将两个有序子数组合并成一个有序数组