```function minNumberInRotateArray(rotateArray)
{
let [left , right] = [0 , rotateArray.length -1]
while(left < right) {
let mid = left + Math.floor((right - left) / 2)
if(rotateArray[mid] < rotateArray[right]) right = mid
else if(rotateArray[mid] > rotateArray[right]) left = mid + 1
else right--
}
return rotateArray[left]
}
module.exports = {
minNumberInRotateArray : minNumberInRotateArray
};