/**
- @param arr Array
- @return Boolean
*/
var Solution = function(arr){
count=0; for(var i=1;i<arr.length&&count<2;i++){ if(arr[i]>=arr[i-1]) continue; if(i-2>=0&&arr[i]<arr[i-2]){ arr[i]=arr[i-1]; }else{ arr[i-1]=arr[i]; } count++; } return count<=1
};
