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xuwenmin · xuwenmin · commit 2e9b13f42984 · 2014-09-01T16:25:14.000+08:00
diff --git a/_posts/JavaScript/2014-08-29-一个计算数字的步数算法.md b/_posts/JavaScript/2014-08-29-一个计算数字的步数算法.md
@@ -49,6 +49,7 @@ function print(arg){
 
 // 检查是否是正反的走法
 function hasRepeat(src, dist){
+	if (dist.length != 2) return false;
 	for(var i = 0, len = src.length; i < len ; i++){
 		if(dist.length == src[i].length){
 			if(dist[0] == src[i][1]){
