posts/2019-9-4-%E9%80%86%E6%B3%A2%E5%85%B0%E8%A1%A8%E8%BE%BE%E5%BC%8F%E7%AE%97%E6%B3%95/

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逆波兰表达式算法 | Less is more

摘要：将中缀表达式转化为后缀表达式，以及计算后缀表达式的算法。
import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.HashSet; import java.util.Scanner; import java.util.Stack; /** * @author YaoQi * Date: 2019/1/5 15:45 * Modified: * Description: 中缀表达式转后缀表达式 */ public class InfixToSuffixHandler { private static final Logger logger = LoggerFactory.getLogger(InfixToSuffixHandler.class); private static HashSet opStr = new HashSet<>(); static { logger.info("Initialization operator"); opStr.add('+'); opStr.add('

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