Z-array

input/code.cpp: In function 'int main()':
input/code.cpp:37:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(int i=0; i< a.size(); i++){
      |                  ~^~~~~~~~~~
input/code.cpp:39:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         if(i!=a.size()-1)cout << " ";
      |            ~^~~~~~~~~~~~

#include <iostream>
#include <vector>
#include <string>

using namespace std;

vector<int> computeZArray(const string& s) {
    int n = s.size();
    vector<int> Z(n, 0);
    int left = 0, right = 0;

    Z[0] = s.size();

    for (int i = 1; i < n; ++i) {
        if (i <= right) {
            Z[i] = min(right - i + 1, Z[i - left]);
        }
        while (i + Z[i] < n && s[Z[i]] == s[i + Z[i]]) {
            Z[i]++;
        }
        if (i + Z[i] - 1 > right) {
            left = i;
            right = i + Z[i] - 1;
        }
    }

    return Z;
}

int main(){
    string a;

    cin >> a;

    vector<int> res = computeZArray(a);

    for(int i=0; i< a.size(); i++){
        cout << res[i];
        if(i!=a.size()-1)cout << " ";
    }

    cout << endl;




}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED