How to compare two vectors, in C++

This is my code:

#include <algorithm>
void f() {
    int[] a = {1, 2, 3, 4};
    int[] b = {1, 2, 100, 101};
    // I want to do something like this:
    // int* found = compare(a[0], a[3], b[0]);
    // in order to get a pointer to a[2]
}

Maybe I missed this algorithm in the manual… Plea开发者_JAVA百科se help :)

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Look at std::mismatch

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Sort your array and use mismatch.