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  1. Prepare
  2. Algorithms
  3. Bit Manipulation
  4. Lonely Integer
  5. Discussions

Lonely Integer

  • szauer_zsolt
     + 0 comments

    JAVA8 With stream (need stack to store a previus Item)

    final Stack<Integer> stack=new Stack<>();
a.stream().sorted().filter((i)->{
     if (stack.isEmpty()){stack.push(i);return false;}
     else if (stack.get(0).equals(i)){stack.pop();return false;}
            else return true;
            }).findFirst();   
return stack.pop();