Thursday, 10 November 2016

C++ Program To Find Duplicate Element In Array Time Complexity O(n), Space Complexity O(1)

Problem :- Find Duplicates In O(n) Time And O(1) Extra Space.Given An array Of n Elements With Any Of These Numbers Appearing Any Number Of Times. Find These Repeating Numbers In O(n) And Using Only Constant Memory Space.


Let n Be 9 And Array Be {0,2,3,2,3,0,9,9,7}, The OUTPUT Should Be 2, 3 ,9 And 0.

Solution :-

using namespace std;

void repeated_element(int a[],int size)
    int i,count=0;

    cout<<"Repeating Element Are : ";

  else if(a[abs(a[i])]==0)
  cout<<" "<<abs(a[i]);  

        cout<<" "<<count;

int main()
int n,i,a[20];
cout<<"Enter The Size Of Array\n";
cout<<"Enter The Element Of Array\n";
return 0;

Output :-

C++ Program To Find Duplicate Element In Array Time Complexity O(n), Space Complexity O(1)

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Ghanendra Yadav

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