Binary Search Implementation using Dart programming language

binarySearch.dart

int binarySearch(L,left,right,x){
  if(left>right){
    return -1;
  }
  int mid=(left+right)~/2;
  if(L[mid]==x){
    return mid;
  }
  if(L[mid]<x){
    return binarySearch(L,mid+1,right,x);
  }
  else{
    return binarySearch(L,left,mid-1,x);
  }
}

void main() {
 var L=[1,2,5,6,9,10,34,43,46,50,77,81,87,90,95,101,340,430,460,500];
 var left=0;
 var right=L.length-1;
 var x=46;
 var result=binarySearch(L,left,right,x);
  print('${x} found in index of ${result}');
}