diff --git a/util/stringMatch/SundayMatch.go b/util/stringMatch/SundayMatch.go
index 1cacbcb..6906b22 100644
--- a/util/stringMatch/SundayMatch.go
+++ b/util/stringMatch/SundayMatch.go
@@ -6,17 +6,17 @@
 
 package stringMatch
 
-func ShiftTable(modeString string) []int {
+func ShiftTable(mode string) []int {
 	shiftTable := make([]int, 256)
 
 	//一开始设置所有的字符匹配不上向右移动大小为：模式字符串长度 + 1（因为要移动到下一个字符的后一位）
 	for i := range shiftTable {
-		shiftTable[i] = len(modeString) + 1
+		shiftTable[i] = len(mode) + 1
 	}
 
 	//设置模式字符串中每一个字符的移动长度.
-	for i := range modeString {
-		shiftTable[modeString[i]-'a'] = len(modeString) - i
+	for i := range mode {
+		shiftTable[mode[i]] = len(mode) - i
 	}
 
 	return shiftTable
@@ -38,7 +38,7 @@ func SundayMatch(allString, modeString string) int {
 		}
 		//找到移动后模式字符串对应原始字符串的第一个位置
 		move := allString[i+mLength]
-		i = i + table[move-'a']
+		i = i + table[move]
 	}
 
 	return -1