<pre class="shiki github-dark shaku"><code>/** * @param {string} str * @return {boolean} */function validate(str) { const obj = { '{':'}', '(':')', '[':']', } if(str.length%2) return false; const stack = []; let res = true; for(let i=0;i&lt;str.length;i++) { if(str[i] in obj) { stack.push(str[i]) } if(!(str[i] in obj)) { if(obj[stack.pop()]==str[i]) { break }else{ res=false; return res } } } return res}</code></pre>

Solution with creating comparison object

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Given a string containing only following characters: 1. parentheses : ( or ) 2. brackets: [ or ] 3. braces: { or } write a function to determine if th…