LF.391.Determine If Array Is Min Heap

Determine if the given integer array is min heap.

public class Solution {
  public boolean isMinHeap(int[] array) {
    // Write your solution here
    if (array == null || array.length == 0) {
        return true ;
    }
    int pre = array[0] ;
    for (int i = 1; i<array.length; i++ ) {
        if (pre > array[i]) {
            return false ;
        }
    }
    return true ;
  }
}