LF.391.Determine If Array Is Min Heap

 1 public class Solution {
 2   public boolean isMinHeap(int[] array) {
 3     // Write your solution here
 4     if (array == null || array.length == 0) {
 5         return true ;
 6     }
 7     int pre = array[0] ;
 8     for (int i = 1; i<array.length; i++ ) {
 9         if (pre > array[i]) {
10             return false ;
11         }
12     }
13     return true ;
14   }
15 }