In this we will see how to check if a given string take valid combination of open and close brackets i.e.

(4+{8-[22+8]*}] contains valid order of open and close brackets.

({5+8]) contains invalid combination of open and close brackets.

Bracket combinations to be used,

  • { , }
  • [,]
  • (,)

Algo Used:


  • Create a empty stack of characters
  • Traverse characters in string one by one.
    • If any open bracket is encountered, then push that in stack
    • If any type of close bracket is encountered then match it’s open bracket counterpart with top of stack.
      • If match is successful then pop character from stack.
      • If match is unsuccessful then RETURN FALSE.
  • If stack is empty RETURN TRUE;
  • If stack is not empty RETURN FALSE;

Code is as follows,

If you didn't find what you were looking, then do suggest us in the comments below. We will be more than happy to add that.

Do Subscribe with us for more Articles / Tutorials like this,