如何比较数组中的元素？

Question

int elements[5] = {1,2,5,1,2} 

for(int i=0; i< 5 -1 ; i++)
  {
     if(elements[i] ==elements[i+1]  ){
          cout << "equal" << endl;
     }else{

      cout << "not equal" << endl;
     }

  }

如何改善这个？我无法将索引0与索引5进行比较;

Answer 1

尝试以下

int elements[5] = {1,2,5,1,2} 
for(int i=0; i<5; i++)
   {
   for(int j=i+1; j<5; j++)
      {
          if(elements[i] ==elements[j]  ){
               cout << "equal" << endl;
          }else{
               cout << "not equal" << endl;
          }
      }
   }