1494a50123
* fix: restructure certifications guide articles * fix: added 3 dashes line before prob expl * fix: added 3 dashes line before hints * fix: added 3 dashes line before solutions
35 lines
796 B
Markdown
35 lines
796 B
Markdown
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title: Balanced brackets
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---
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# Balanced brackets
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---
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## Solutions
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<details><summary>### Solution #1 (Click to Show/Hide)</summary>
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```js
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function isBalanced(str) {
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if (str === "") return true;
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str = str.split("");
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let stack = [];
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for (let i = 0; i < str.length; i++) {
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if (str[i] === "[") {
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stack.push("[");
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} else if (str[i] === "]" && stack[stack.length - 1] === "[") {
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stack.pop();
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}
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}
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return stack.length === 0;
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}
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```
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#### Code Explanation
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- Split the input string into individual characters & loop over them.
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- Push every `[` into a stack.
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- Check if the item stored on the stack is `[` when a `]` occurs. This makes it a pair & `[` can be removed from the stack.
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- The brackets are balanced if there is no item present in the stack.
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</details> |