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    '''for''' i = 1 '''to''' n 
      '''if''' i <= k
        a[i] = 1;
      '''else'''
        a[i] = 0;    random_shuffle(a);
    '''for''' i = 1 '''to''' n
      '''if''' a[i] == 1
        ans.push(arrayOfElement[i]);    '''return''' ans;
</code>
