fix bug

hutool-core/src/main/java/cn/hutool/core/math/Calculator.java

@@ -144,7 +144,7 @@ public class Calculator {
 	 * @return 是否为算术符号
 	 */
 	private boolean isOperator(char c) {
-		return c == '+' || c == '-' || c == '*' || c == '/' || c == '(' || c == ')';
+		return c == '+' || c == '-' || c == '*' || c == '/' || c == '(' || c == ')' || c == '%';
 	}
 
 	/**
@@ -155,7 +155,17 @@ public class Calculator {
 	 * @return 优先级
 	 */
 	public boolean compare(char cur, char peek) {// 如果是peek优先级高于cur，返回true，默认都是peek优先级要低
-		return operatPriority[(peek) - 40] >= operatPriority[(cur) - 40];
+		final int offset = 40;
+		if(cur  == '%'){
+			// %优先级最高
+			cur = 47;
+		}
+		if(peek  == '%'){
+			// %优先级最高
+			peek = 47;
+		}
+
+		return operatPriority[(peek) - offset] >= operatPriority[(cur) - offset];
 	}
 
 	/**
@@ -163,7 +173,7 @@ public class Calculator {
 	 *
 	 * @param firstValue  第一个值
 	 * @param secondValue 第二个值
-	 * @param currentOp   算数符，只支持'+'、'-'、'*'、'/'
+	 * @param currentOp   算数符，只支持'+'、'-'、'*'、'/'、'%'
 	 * @return 结果
 	 */
 	private BigDecimal calculate(String firstValue, String secondValue, char currentOp) {
@@ -181,6 +191,9 @@ public class Calculator {
 			case '/':
 				result = NumberUtil.div(firstValue, secondValue);
 				break;
+			case '%':
+				result = NumberUtil.toBigDecimal(firstValue).remainder(NumberUtil.toBigDecimal(secondValue));
+				break;
 			default:
 				throw new IllegalStateException("Unexpected value: " + currentOp);
 		}

hutool-core/src/main/java/cn/hutool/core/text/StrBuilder.java

@@ -177,7 +177,7 @@ public class StrBuilder implements CharSequence, Appendable, Serializable {
 		if(index < 0){
 			index = this.position + index;
 		}
-		if ((index < 0) || (index > this.position)) {
+		if ((index < 0)) {
 			throw new StringIndexOutOfBoundsException(index);
 		}
 
@@ -221,7 +221,7 @@ public class StrBuilder implements CharSequence, Appendable, Serializable {
 		if(index < 0){
 			index = this.position + index;
 		}
-		if ((index < 0) || (index > this.position)) {
+		if ((index < 0)) {
 			throw new StringIndexOutOfBoundsException(index);
 		}
 
@@ -252,7 +252,7 @@ public class StrBuilder implements CharSequence, Appendable, Serializable {
 		if(index < 0){
 			index = this.position + index;
 		}
-		if ((index < 0) || (index > this.position)) {
+		if ((index < 0)) {
 			throw new StringIndexOutOfBoundsException(index);
 		}
 
@@ -309,7 +309,7 @@ public class StrBuilder implements CharSequence, Appendable, Serializable {
 		if(index < 0){
 			index = this.position + index;
 		}
-		if ((index < 0) || (index > this.position)) {
+		if ((index < 0)) {
 			throw new StringIndexOutOfBoundsException(index);
 		}
 

hutool-core/src/test/java/cn/hutool/core/math/CalculatorTest.java

@@ -22,4 +22,10 @@ public class CalculatorTest {
 		final double conversion = Calculator.conversion("1");
 		Assert.assertEquals(1, conversion, 2);
 	}
+
+	@Test
+	public void conversationTest4(){
+		final double conversion = Calculator.conversion("(88*66/23)%26+45%9");
+		Assert.assertEquals((88D * 66 / 23) % 26, conversion, 2);
+	}
 }

hutool-core/src/test/java/cn/hutool/core/text/StrBuilderTest.java

@@ -14,7 +14,7 @@ import cn.hutool.core.lang.Console;
  *
  */
 public class StrBuilderTest {
-	
+
 	/**
 	 * StrBuilder的性能测试
 	 */
@@ -28,7 +28,7 @@ public class StrBuilderTest {
 			builder.reset();
 		}
 		Console.log(timer.interval());
-		
+
 		timer.restart();
 		StringBuilder b2 = new StringBuilder();
 		for(int i =0; i< 1000000; i++) {
@@ -37,14 +37,14 @@ public class StrBuilderTest {
 		}
 		Console.log(timer.interval());
 	}
-	
+
 	@Test
 	public void appendTest() {
 		StrBuilder builder = StrBuilder.create();
 		builder.append("aaa").append("你好").append('r');
 		Assert.assertEquals("aaa你好r", builder.toString());
 	}
-	
+
 	@Test
 	public void insertTest() {
 		StrBuilder builder = StrBuilder.create(1);
@@ -52,7 +52,7 @@ public class StrBuilderTest {
 		builder.insert(3, "数据插入");
 		Assert.assertEquals("aaa数据插入你好r", builder.toString());
 	}
-	
+
 	@Test
 	public void insertTest2() {
 		StrBuilder builder = StrBuilder.create(1);
@@ -60,7 +60,7 @@ public class StrBuilderTest {
 		builder.insert(8, "数据插入");
 		Assert.assertEquals("aaa你好r  数据插入", builder.toString());
 	}
-	
+
 	@Test
 	public void resetTest() {
 		StrBuilder builder = StrBuilder.create(1);
@@ -69,7 +69,7 @@ public class StrBuilderTest {
 		builder.reset();
 		Assert.assertEquals("", builder.toString());
 	}
-	
+
 	@Test
 	public void resetTest2() {
 		StrBuilder builder = StrBuilder.create(1);
@@ -79,7 +79,7 @@ public class StrBuilderTest {
 		builder.append("bbb".toCharArray());
 		Assert.assertEquals("bbb", builder.toString());
 	}
-	
+
 	@Test
 	public void appendObjectTest() {
 		StrBuilder builder = StrBuilder.create(1);
@@ -100,7 +100,6 @@ public class StrBuilderTest {
 	public void delTest2() {
 		// 删除中间部分测试
 		StrBuilder strBuilder = new StrBuilder("ABCDEFG");
-		int length = strBuilder.length();
 		StrBuilder builder = strBuilder.del(2,6);
 		Assert.assertEquals("ABG", builder.toString());
 	}