How to get sorted index order for an array?
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For example, if I use the sort function on the array [14 8 91 19], I will get [8 14 19 91]. But instead I want [2 1 4 3] which gives me the indices of elements in the original array.
Is there any inbuilt function or does the sort function accept any additional argument to accomplish this? Otherwise I have to write my own function.