Given a vector of flip sites, 1s or -1s, representing up and down spins respectively, flip any of the site randomly. The function uses default RNG (Marsienne-Twister) unless changed by the user, within R, to generate a vector that contains 1s or -1s. This function calls 'flipConfig1D' C function.
1D Spin sites on the lattice
Returns vector that contains 1s or -1s.
Mehmet Suzen <email@example.com>
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