fix bugs

MTco · Feb 14, 2016 · 3423200 · 3423200
1 parent 4abda01
commit 3423200
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diff --git a/_posts/zh_CN/2016-02-03-implementing-asynchronous-loops.md b/_posts/zh_CN/2016-02-03-implementing-asynchronous-loops.md
@@ -92,7 +92,7 @@ for (var i=0; i<5; i++) {
 for (let i=0; i<5; i++) {
 	var temp = i;
  	setTimeout(function(){
-		console.log(temp); 
+		console.log(i); 
 	}, 1000);
 }  
 ```
diff --git a/_posts/zh_CN/2016-02-10-array-average-and-median.md b/_posts/zh_CN/2016-02-10-array-average-and-median.md
@@ -5,7 +5,7 @@ title: 数组平均值与中值
 tip-number: 41
 tip-username: soyuka
 tip-username-profile: https://github.com/soyuka
-tip-tldr: 计算数组的平均值与中值
+tip-tldr: 计算数组的平均值与中位数
 
 
 categories:
@@ -42,21 +42,22 @@ values /= count;
 
 取得中值的步骤是：
 - 将数组排序
-- 取得中间的值
+- 取得中位数
 
 ```javascript
 let values = [2, 56, 3, 41, 0, 4, 100, 23];
 values.sort((a, b) => a - b);
-let middle = Math.floor(values.length / 2);
-let median = values[middle];
-// median = 23
+let lowMiddle = Math.floor((values.length - 1) / 2);
+let highMiddle = Math.ceil((values.length - 1) / 2);
+let median = (values[lowMiddle] + values[highMiddle]) / 2;
+// median = 13,5
 ```
 
 或者使用[无符号右移](https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#Right_shift)操作符：
 
 ```javascript
 let values = [2, 56, 3, 41, 0, 4, 100, 23];
 values.sort((a, b) => a - b);
-let median = values[values.length >> 1];
+let median = (values[(values.length - 1) >> 1] + values[values.length >> 1]) / 2
 // median = 23
 ```