Difference for_each et for

LinkedList<String> liste = new LinkedList<String> liste();
// ...
for (int i=0; i<liste.size(); i++)
    System.out.println(liste.get(i));

LinkedList<String> liste = new LinkedList<String> liste();
// ...
for (String s : liste) // for each en Java
    System.out.println(liste.get(i));

for_each        0
for             1269
for each        6155

#include <iostream>
#include <vector>
#include <algorithm>
#include <time.h>

inline void todo(int i) 
{
	int j = i;
}

int main()
{
	clock_t start,finish;

	int n = (int) 4.5e8;
	std::vector<int> v(n);

	start = clock();
	for_each (v.begin(), v.end(), todo);
	finish = clock();
	printf ("for_each\t%ld\n", finish-start);

	start = clock();
	for (int i=0; i<n; i++)
		todo(v[i]);
	finish = clock();
	printf ("for\t\t%ld\n", finish-start);

	start = clock();
	for each (int i in v)
		todo(v[i]);
	finish = clock();
	printf ("for each\t%ld\n", finish-start);

	system("pause");
	return 0;
}