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A permutation p is an ordered group of numbers p1,   p2,   ...,   pn, consisting of n distinct positive integers, each is no more than n. We'll define number n as the length of permutation p1,   p2,  ...

outputstandard outputGiven two integersnnandxx, construct an array that satisfies the following conditions:for any elementaiaiin the array,1≤ai<2n1≤ai<2n; there is nonon-emptysubs...