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What is the colon operator? How do I rearrange arrays without having to use for loops?

April 26, 2017arrays colon loops operator rearrange

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What is the colon operator? How do I rearrange arrays without having to use for loops?

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The colon operator is a very important operator and can at many times help to avoid using for loops or other such constructs. For example suppose we had a 2-d matrix/array.