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java-calculator

๋ฌธ์ž์—ด ๊ณ„์‚ฐ๊ธฐ ๋ฏธ์…˜ ์ €์žฅ์†Œ

๋‹จ์œ„ ํ…Œ์ŠคํŠธ ์‹ค์Šต - ๋ฌธ์ž์—ด ๊ณ„์‚ฐ๊ธฐ

  • ๋‹ค์Œ ์š”๊ตฌ์‚ฌํ•ญ์„ junit์„ ํ™œ์šฉํ•ด ๋‹จ์œ„ ํ…Œ์ŠคํŠธ ์ฝ”๋“œ๋ฅผ ์ถ”๊ฐ€ํ•ด ๊ตฌํ˜„ํ•œ๋‹ค.

์š”๊ตฌ์‚ฌํ•ญ

  • ์‚ฌ์šฉ์ž๊ฐ€ ์ž…๋ ฅํ•œ ๋ฌธ์ž์—ด ๊ฐ’์— ๋”ฐ๋ผ ์‚ฌ์น™์—ฐ์‚ฐ์„ ์ˆ˜ํ–‰ํ•  ์ˆ˜ ์žˆ๋Š” ๊ณ„์‚ฐ๊ธฐ๋ฅผ ๊ตฌํ˜„ํ•ด์•ผ ํ•œ๋‹ค.
  • ๋ฌธ์ž์—ด ๊ณ„์‚ฐ๊ธฐ๋Š” ์‚ฌ์น™์—ฐ์‚ฐ์˜ ๊ณ„์‚ฐ ์šฐ์„ ์ˆœ์œ„๊ฐ€ ์•„๋‹Œ ์ž…๋ ฅ ๊ฐ’์— ๋”ฐ๋ผ ๊ณ„์‚ฐ ์ˆœ์„œ๊ฐ€ ๊ฒฐ์ •๋œ๋‹ค. ์ฆ‰, ์ˆ˜ํ•™์—์„œ๋Š” ๊ณฑ์…ˆ, ๋‚˜๋ˆ—์…ˆ์ด ๋ง์…ˆ, ๋บ„์…ˆ ๋ณด๋‹ค ๋จผ์ € ๊ณ„์‚ฐํ•ด์•ผ ํ•˜์ง€๋งŒ ์ด๋ฅผ ๋ฌด์‹œํ•œ๋‹ค.
  • ์˜ˆ๋ฅผ ๋“ค์–ด "2 + 3 * 4 / 2"์™€ ๊ฐ™์€ ๋ฌธ์ž์—ด์„ ์ž…๋ ฅํ•  ๊ฒฝ์šฐ 2 + 3 * 4 / 2 ์‹คํ–‰ ๊ฒฐ๊ณผ์ธ 10์„ ์ถœ๋ ฅํ•ด์•ผ ํ•œ๋‹ค.

ํžŒํŠธ

  • ๋ฌธ์ž์—ด์„ ์ž…๋ ฅ ๋ฐ›์€ ํ›„(scanner์˜ nextLine() ๋ฉ”์†Œ๋“œ ํ™œ์šฉ) ๋นˆ ๊ณต๋ฐฑ ๋ฌธ์ž์—ด์„ ๊ธฐ์ค€์œผ๋กœ ๋ฌธ์ž๋“ค์„ ๋ถ„๋ฆฌํ•ด์•ผ ํ•œ๋‹ค.
String value = scanner.nextLine();
String[] values = value.split(" ");
  • ๋ฌธ์ž์—ด์„ ์ˆซ์ž๋กœ ๋ณ€๊ฒฝํ•˜๋Š” ๋ฐฉ๋ฒ•

int number = Integer.parseInt("๋ฌธ์ž์—ด");

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