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데브코스 / Java 문자열 계산기 미션

Java 100.00%

devcourse-calculator's Introduction

🔢 미션: 문자열 계산기

🔧 구현 기능

출력

선택 옵션(계산, 조회, 종료) 출력
식 연산 결과 출력

입력

선택 옵션(계산, 조회, 종료) 입력
- 사용자 입력을 구분(1, 2, 0 과 그 외)
사용자로부터 식을 입력받는 기능

계산기

연산 우선 순위 설정
입력된 식을 후위식으로 변경
후위식 계산

조회

연산 결과 저장
연산 결과 조회

예외처리

정규식을 이용한 예외처리
피연산자의 개수가 연산자 개수보다 많거나 같은 경우 예외처리
빈 값 입력에 대한 예외처리

UML & flow chart

UML - 설계

UML - 구현

flowchart

피드백

실행결과(콘솔)

1. 조회
2. 계산

선택 : 2

1 + 2
3

1. 조회
2. 계산

선택 : 2

1 + 2 * 3
7

1. 조회
2. 계산

선택 : 1

1 + 2 = 3
1 + 2 * 3 = 7

선택 : 2

3 - 2 * 2
-1

요구사항

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