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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() 
  5. {
  6.    int n;
  7.    cin>>n;
  8.  
  9.    int a[n+1];// 1-based indexing 
  10.    for(int i=1; i<=n; i++)
  11.    {
  12.        cin>>a[i];
  13.    }
  14.  
  15.    int b[n+1];
  16.    for(int i=1; i<=n; i++)
  17.    {
  18.        cin>>b[i];
  19.    }
  20.  
  21.    int r = 0;
  22.    int c = 0;
  23.    int count = 0; // longest subarray which is valid starting at index 'i'
  24.    for(int i=1; i<=n; i++)
  25.    {
  26.        c = 1; // reset c and start from b[1]
  27.        count = 0; // reset count
  28.  
  29.        for(int j=i; j<=n; j++)
  30.        {
  31.  
  32.            //a[i....j]
  33.            if(a[j]==b[c])
  34.            {
  35.                 count++; // count the matching elements
  36.                 c++; //  move to next element of b
  37.            }
  38.            else
  39.            {
  40.                c++; // else increment c++ the pointer in 'B' Array Na Kyuki uspe subset nahi mil raha vo wala Array 'A' ka 
  41.            }
  42.        }
  43.        r = max(r,count);
  44.    }
  45.  
  46.    r = n - r; // convert maximum matching elements into operations
  47.  
  48.    cout<<"Number of operations needed to make Array 'B' equal to Array 'A' : "<<r;
  49.  
  50.    return 0;
  51.  
  52.    /*
  53.    5
  54.    1 2 3 4 5
  55.    2 3 4 5 1 
  56.    
  57.    otput: 1
  58.    */
  59. }
Success #stdin #stdout 0.01s 5324KB
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stdin
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5
1 2 3 4 5 
2 3 4 5 1
stdout
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Number of operations needed to make Array 'B' equal to Array 'A' : 1
https://ideone.com/IvtoNc
language:
C++ (gcc 8.3)
created:
87 days ago
visibility:
secret

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