旋转数组的最小数字

public class Solution {
    public int minNumberInRotateArray(int [] array) {
        if(array == null || array.length == 0){
            return 0;
        }
        
        if(array[0]<array[array.length-1]){
            return array[0];
        }
        
        for(int i=0; i<array.length-1; i++){
            if(array[i]>array[i+1]){
                return array[i+1];
            }
        }
        
        return 0;
    }
}