static boolean isPossible ( int arr [ ] , int n , int dist , int k ) {
  int req = 0 ;
  int curr = 0 ;
  int prev = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    while ( curr != n && arr [ curr ] - arr [ prev ] <= dist ) {
      curr ++ ;
    }
    req ++ ;
    if ( curr == n ) {
      break ;
    }
    prev = curr - 1 ;
  }
  if ( curr != n ) {
    return false ;
  }
  if ( req <= k ) {
    return true ;
  }
  return false ;
}

static boolean isPossible ( int arr [ ] , int n , int dist , int k ) { int req = 0 ; int curr = 0 ; int prev = 0 ; for ( int i = 0 ; i < n ; i ++ ) { while ( curr != n && arr [ curr ] - arr [ prev ] <= dist ) { curr ++ ; } req ++ ; if ( curr == n ) { break ; } prev = curr - 1 ; } if ( curr != n ) { return false ; } if ( req <= k ) { return true ; } return false ; }
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