update index answer

02_选择排序/index.yml

@@ -114,7 +114,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

03_插入排序/index.yml

@@ -115,7 +115,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

04_希尔排序/index.yml

@@ -115,7 +115,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

05_归并排序/index.yml

@@ -115,7 +115,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

06_快速排序/index.yml

@@ -116,7 +116,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

08_字符串算法题_最长公共前缀/index.yml

@@ -107,7 +107,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

10_数组算法题_旋转数组/index.yml

@@ -105,7 +105,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

12_链表算法题_反转链表/index.yml

@@ -105,7 +105,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

14_栈和队列算法题_用两个栈实现队列/index.yml

@@ -105,7 +105,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B

16_哈希表算法题_两数之和/index.yml

@@ -105,7 +105,7 @@ step7:
       with: A
       action:
         - type: choice
-          with: next.md
+          with: answer.md
       to: last
     - events: ['note_events']
       with: B