and there were written code like this, I want to change for(int bfl : vectr[curr]) part. How I can do this. Thanks in advance
#include <bits/stdc++.h>
using namespace std;
vector < int > vectr[10001];
int visited[10001], distanced[10001];
int t, n, m, a, b;
void bf(int crt) {
queue < int > qs;
qs.push(crt);
visited[crt] = 1;
distanced[crt] = 0;
while (!qs.empty()) {
int curr = qs.front();
qs.pop();
for (int bfl: vectr[curr])
if (visited[bfl] == 0) {
qs.push(bfl);
distanced[bfl] = distanced[curr] + 1;
visited[bfl] = 1;
}
}
}
int main() {
cin >> t;
while (t--) {
cin >> n >> m;
for (int i = 1; i <= n; i++) {
vectr[i].clear(), visited[i] = 0;
}
while (m--) {
cin >> a >> b;
vectr[a].push_back(b);
vectr[b].push_back(a);
}
bf(1);
cout << distanced[n] << endl;
}
}
I want to change it to simple for from foreach, like:
for(int i=0;i<a;i+)
question from:
https://stackoverflow.com/questions/66051909/why-for-loops-does-not-work-when-i-change-it-from-foreach 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…