How to generate combination of vectors [duplicate]

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combination and permutation in C++

I have a vector of say size "n". Lets say for example a vector of n=4, <1,2,3,4>. How can I generate all n-1 combinations of this vector. In this example, 4 chose 3. I want the output to be <1,2,3> <1,2,4> <1,3,4> <2,3,4>. Thanks.

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Start by looking up STL's next_permutation function.