添加背包理论基础01背包-1 Go版本

problems/背包理论基础01背包-1.md

@@ -273,7 +273,40 @@ Python：
 
 
 Go：
+```go
+func test_2_wei_bag_problem1(weight, value []int, bagWeight int) int {
+	// 定义dp数组
+	dp := make([][]int, len(weight))
+	for i, _ := range dp {
+		dp[i] = make([]int, bagWeight+1)
+	}
+	// 初始化
+	for j := bagWeight; j >= weight[0]; j-- {
+		dp[0][j] = dp[0][j-weight[0]] + value[0]
+	}
+	// 递推公式
+	for i := 1; i < len(weight); i++ {
+		//正序,也可以倒序
+		for  j := weight[i];j<= bagWeight ; j++ {
+			dp[i][j] = max(dp[i-1][j], dp[i-1][j-weight[i]]+value[i])
+		}		
+	}
+	return dp[len(weight)-1][bagWeight]
+}
 
+func max(a,b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func main() {
+	weight := []int{1,3,4}
+	value := []int{15,20,30}
+	test_2_wei_bag_problem1(weight,value,4)
+}
+```
 
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 * 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)