Merge pull request #1279 from Frankheartusf/master

更新了0045 跳跃游戏II golang代码

problems/0045.跳跃游戏II.md

@@ -218,18 +218,26 @@ class Solution:
 ```Go
 func jump(nums []int) int {
     dp := make([]int, len(nums))
-	dp[0]=0
+    dp[0] = 0//初始第一格跳跃数一定为0
 
     for i := 1; i < len(nums); i++ {
         dp[i] = i
         for j := 0; j < i; j++ {
-			if nums[j]+j>i{
+            if nums[j] + j >= i {//nums[j]为起点,j为往右跳的覆盖范围,这行表示从j能跳到i
-				dp[i]=min(dp[j]+1,dp[i])
+                dp[i] = min(dp[j] + 1, dp[i])//更新最小能到i的跳跃次数
             }
         }
     }
     return dp[len(nums)-1]
 }
+
+func min(a, b int) int {
+    if a < b {
+        return a
+    } else {
+        return b 
+    }
+}
 ```
 
 ### Javascript