import java.util.ArrayList;
public class Solution {
public int minNumberInRotateArray(int [] nums) {
int l = 0, r = nums.length - 1;
while(l < r){
int mid = l + ((r - l)>>1);
if(nums[mid] == nums[r]){
r--;
}else if(nums[mid] < nums[r]){
r = mid;
}else {
l = mid + 1;
}
}
return nums[l];
}
}