使用c ++中的向量对进行排序(sorting using vector pair in c++)

 我正在使用向量对来排序我使用循环插入第一个和第二个元素的位置 
 
vect.push_back(make_pair(count[i],arr[i]));

sort(vect.begin(),vect.end());

cout<<vect[i].second<<" ";
 
 如果我的计数是相等的，那么我想按照它们在矢量中插入的顺序打印第二个元素， 
 
 但它没有发生。 
 
 有人可以告诉我为什么吗？ 

I am using vector pair to sort where I am inserting first and second element using a loop
 
vect.push_back(make_pair(count[i],arr[i]));

sort(vect.begin(),vect.end());

cout<<vect[i].second<<" ";
 
if my counts are equal then I want to print the second element in the order they were inserted in vector,
 
but it is not happening. 
 
Can someome tell me why?

原文：https://stackoverflow.com/questions/49490137