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  1. Balanced Brackets
  2. Discussions

Balanced Brackets

  • guysneh
     + 0 comments

    C#

    char last = ' ';
  for (int i = 0;i<s.Length;i++) 
  {
    char c = s[i];
    switch (c) 
    {
      case '{':
        break;
      case '[':
        break;
      case '(':
        break;
      case ')':
        if (last=='(') 
        {
          s = s.Remove(i - 1, 2);
          i -= 2;
        }
        else 
        {
          return "NO";
        }
        break;
      case ']':
        if (last == '[')
        {
          s = s.Remove(i - 1, 2);
          i -= 2;
        }
        else
        {
          return "NO";
        }
        break;
      case '}':
        if (last == '{')
        {
          s = s.Remove(i - 1, 2);
          i -= 2;
        }
        else
        {
          return "NO";
        }
        break;
    }
      if (i>-1) 
    {
      last = s[i];
    }     
    else 
    {
      last = ' ';
    }
  }

  if (s.Length==0) 
  {
    return "YES";
  }
  else 
  {
    return "NO";
  }