diff --git a/problems/kama54.替换数字.md b/problems/kama54.替换数字.md
index a7e0c7f0..0f8daa21 100644
--- a/problems/kama54.替换数字.md
+++ b/problems/kama54.替换数字.md
@@ -190,45 +190,45 @@ package main
 import "fmt"
 
 func replaceNumber(strByte []byte) string {
-	// 查看有多少字符
-	numCount, oldSize := 0, len(strByte)
-	for i := 0; i < len(strByte); i++ {
-		if (strByte[i] <= '9') && (strByte[i] >= '0') {
-			numCount ++
-		}
-	}
-	// 增加长度
-	for i := 0; i < numCount; i++ {
-		strByte = append(strByte, []byte("     ")...)
-	}
-	tmpBytes := []byte("number")
-	// 双指针从后遍历
-	leftP, rightP := oldSize-1, len(strByte)-1
-	for leftP < rightP {
-		rightShift := 1
-		// 如果是数字则加入number
-		if (strByte[leftP] <= '9') && (strByte[leftP] >= '0') {
-			for i, tmpByte := range tmpBytes {
-				strByte[rightP-len(tmpBytes)+i+1] = tmpByte
-			}
-			rightShift = len(tmpBytes)
-		} else {
-			strByte[rightP] = strByte[leftP]
-		}
-		// 更新指针
-		rightP -= rightShift
-		leftP -= 1
-	}
-	return string(strByte)
+    // 查看有多少字符
+    numCount, oldSize := 0, len(strByte)
+    for i := 0; i < len(strByte); i++ {
+        if (strByte[i] <= '9') && (strByte[i] >= '0') {
+            numCount ++
+        }
+    }
+    // 增加长度
+    for i := 0; i < numCount; i++ {
+        strByte = append(strByte, []byte("     ")...)
+    }
+    tmpBytes := []byte("number")
+    // 双指针从后遍历
+    leftP, rightP := oldSize-1, len(strByte)-1
+    for leftP < rightP {
+        rightShift := 1
+        // 如果是数字则加入number
+        if (strByte[leftP] <= '9') && (strByte[leftP] >= '0') {
+            for i, tmpByte := range tmpBytes {
+                strByte[rightP-len(tmpBytes)+i+1] = tmpByte
+            }
+            rightShift = len(tmpBytes)
+        } else {
+            strByte[rightP] = strByte[leftP]
+        }
+        // 更新指针
+        rightP -= rightShift
+        leftP -= 1
+    }
+    return string(strByte)
 }
 
 func main(){
-	var strByte []byte
-	fmt.Scanln(&strByte)
-
+    var strByte []byte
+    fmt.Scanln(&strByte)
+    
     newString := replaceNumber(strByte)
 
-	fmt.Println(newString)
+    fmt.Println(newString)
 }
 ````