  Hi
   
  Is there a function which determines the location, i.e., index of the all minimums or maximums of a numeric vector.
  Which.min(x) only finds the (first) of such.
   
  > x <- c(1:4,0:5, 4, 11)
  > x
   [1]  1  2  3  4  0  1  2  3  4  5 4 11
  > which.min(x)
  [1] 5
  > which.max(x)
  [1] 11
  >
   
  but I need 
  which.min(x)  to be 5 11
  which.max(x) to be 4 10
   
  thanks
   
  
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