Thread: space complexity of recursive function

  1. #1
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    Jan 2013

    space complexity of recursive function


    this function has to check if an array is not descending it has to be recursive and it's space complexity has to be O(log(n))
    int is_sorted(int a[ ], int n)
     int check=n-1;
     if(n==1 || n==0) return 1;
    if(a[check]<a[check-1])return 0;
     else return(is_sorted(a,n-1));

    this is what i came up with. i know it's space complexity is O(n) how do i make it O(log(n))?

  2. #2
    and the hat of int overfl Salem's Avatar
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    Also here -> Space complexity of recursive function - Dev Shed

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  3. #3
    Algorithm Dissector iMalc's Avatar
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    Dec 2005
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    The guy who said this got it right:
    "An O(log(n)) space complexity algorithm divides intervals in half."

    Consider the first, middle and last items, then perform two recursive calls. That's all I'm prepared to say.
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