diff --git a/docs/dataStructures-algorithms/几道常见的子符串算法题.md b/docs/dataStructures-algorithms/几道常见的子符串算法题.md
index cd2a3e31..aa06e900 100644
--- a/docs/dataStructures-algorithms/几道常见的子符串算法题.md
+++ b/docs/dataStructures-algorithms/几道常见的子符串算法题.md
@@ -135,17 +135,20 @@ public class Main {
 
 	}
 
-	private static boolean checkStrs(String[] strs) {
-            if (strs != null) {
-                // 遍历strs检查元素值
-                for (int i = 0; i < strs.length; i++) {
-                    if (strs[i] == null || strs[i].length() == 0) {
-                        return false;
-                    }
-                }
-            }
-            return true;
-        }
+	private static boolean chechStrs(String[] strs) {
+		boolean flag = false;
+		if (strs != null) {
+			// 遍历strs检查元素值
+			for (int i = 0; i < strs.length; i++) {
+				if (strs[i] != null && strs[i].length() != 0) {
+					flag = true;
+				} else {
+					flag = false;
+				}
+			}
+		}
+		return flag;
+	}
 
 	// 测试
 	public static void main(String[] args) {