//Check for balanced parentheses using stack#include<iostream>#include<stack>//stack from standard template library(STL)#include<string>usingnamespacestd;boolarepair(charopening,charclosing){if(opening =='('&&
function balanceParentheses (str) { let stack=[];constisEmpty = stack => stack.length ===0;constlast = stack => stack[stack.length -1];for(letcharof str) {//if it is open char, push to the stackif(isOpening(char)) { stack.push(char); }//if it is closing charelseif(isClosi...
ENCRYPTION BASED ON BALLOT, STACK PERMUTATIONS AND BALANCED PARENTHESES USING CATALAN-KEYSdoi:10.7251/JIT170269CRYPTOGRAPHYCATALAN numbersDATA encryptionThis paper examines the possibilities of applying Catalan numbers in cryptography. It also offers the application of appropriate combinatorial problems ...
Maximum mobilities; the average values are in parentheses (over 20 devices). b π-π stacking distances are calculated from out-of-plane (010) diffraction in GIWAXS patterns. In general, all six polymers show ambipolar charge-transport properties. An almost symmetric IDS curve together with p-...
class Stack: def __init__(self): self.items = [] def is_empty(self): return self.items == [] def push(self, item): self.items.append(item) def pop(self): return self.items.pop() def peek(self): return self.items[-1] ...
if the current is a closing bracket ")" or "}" or "]" then remove (pop) the top element from the stack. If the popped bracket does not match the starting bracket then parentheses are not balanced; if there are some starting brackets left in the stack after completing traversal, then ...