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  1. function getLoveTrianglesCount(preferences = []) {
  2.   // your implementation
  3.   let length = preferences.length; 
  4.   let count = 0;  
  5.   for (let i = 0; i<length; i++) { 
  6.       let next = preferences[i] - 1;
  7.       if (next == i) continue;
  8.       let nextnext = preferences[next] - 1;
  9.       if (next == nextnext) continue;
  10.       let nextnextnext = preferences[nextnext] - 1;
  11.       if (nextnextnext == nextnext) continue;
  12.       if (nextnextnext == i) {
  13.           count++;
  14.       }
  15.    }
  16.    return count / 3;
  17. }
  18.  
  19. print(getLoveTrianglesCount([5,5,2,3,3]));
  20. print(getLoveTrianglesCount([4,3,3,6,6,1]));
  21. print(getLoveTrianglesCount([4,3,3,6,8,1,5,7]));
  22.  
  23.  
Success #stdin #stdout 0s 105856KB
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https://ideone.com/wkKOCo
language:
JavaScript (SMonkey 60.2.3)
created:
5 years ago
visibility:
public

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