← Problem List
πŸ“

String to Number

String to Number
μž…λ¬Έ 기초 문법 +5pts

Problem

Write a function that converts a string to a number.

Examples

Input: stringToNum("42")
Output: 42

Explanation

이 λ¬Έμ œλŠ” **λ¬Έμžμ—΄μ„ 숫자둜 λ³€ν™˜**ν•˜λŠ” 방법을 ν•™μŠ΅ν•©λ‹ˆλ‹€. JavaScriptμ—μ„œ 자주 μ‚¬μš©λ˜λŠ” μ€‘μš”ν•œ λ³€ν™˜μž…λ‹ˆλ‹€. **Number() ν•¨μˆ˜** λ¬Έμžμ—΄μ„ 숫자둜 λ³€ν™˜ν•©λ‹ˆλ‹€: - Number("42") β†’ 42 - Number("3.14") β†’ 3.14 - Number("abc") β†’ NaN **parseInt()와 parseFloat()** - parseInt("42px") β†’ 42 (숫자 λΆ€λΆ„λ§Œ μΆ”μΆœ) - parseFloat("3.14em") β†’ 3.14 - parseInt("abc") β†’ NaN **단항 + μ—°μ‚°μž** ...

View detailed explanation β†’

Key Concepts

Number() ν•¨μˆ˜ parseInt/parseFloat νƒ€μž… λ³€ν™˜ NaN 처리
Time: O(n) Space: O(1)
solution.js
Ctrl + Enter
Run tests to see results here.