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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. class Node {
  5. public:
  6.     int val;
  7.     Node* next;
  8.     Node(int v) {
  9.         val = v;
  10.         next = nullptr;
  11.     }
  12.  
  13.     void insert(int v) {
  14.         Node* nw = new Node(v);
  15.         Node* t = this;
  16.         while (t->next != nullptr) {
  17.             t = t->next;
  18.         }
  19.         t->next = nw;
  20.     }
  21.  
  22.     int search(int s) {
  23.         int ans = -1, i = 0;
  24.         Node* t = this->next;
  25.         while (t->next != nullptr) {
  26.             // Debug Purposes
  27.             // cerr << t->val << " " << i << " " << s << "\n";
  28.             if(t->val == s) break;
  29.             t = t->next;
  30.             i++;
  31.         }
  32.         if(t->val == s) ans = i;
  33.         return ans;
  34.     }
  35.  
  36.  
  37.     void print() {
  38.         Node* t = next;
  39.         while(t->next != nullptr) {
  40.             cout << t->val << " ";
  41.             t = t->next;
  42.         }
  43.         cout << t->val << "\n";
  44.     }
  45. };
  46.  
  47. int main() {
  48.     int t; cin >> t;
  49.     while(t--) {
  50.         Node *n = new Node(0);
  51.         int x = 0;
  52.         while(1) {
  53.             cin >> x;
  54.             if(x == -1) break;
  55.             n->insert(x);
  56.         }
  57.         int q; cin >> q;
  58.         cout << n->search(q) << "\n";
  59.     }
  60. }
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin 
4
1 2 3 4 5 -1
3
1 2 3 -1
5
1 -1
1
10 20 -1
20
stdout 
2
-1
0
1
https://ideone.com/4qTbGi
language:
C++ (gcc 8.3)
created:
6 days ago
visibility:
public

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