Update 背包问题理论基础完全背包.md

添加 python3 版本代码

problems/背包问题理论基础完全背包.md

@@ -179,9 +179,45 @@ int main() {
 
 Java：
 
-
 Python：
 
+```python3
+# 先遍历物品，再遍历背包
+def test_complete_pack1():
+    weight = [1, 3, 4]
+    value = [15, 20, 30]
+    bag_weight = 4
+
+    dp = [0]*(bag_weight + 1)
+
+    for i in range(len(weight)):
+        for j in range(weight[i], bag_weight + 1):
+            dp[j] = max(dp[j], dp[j - weight[i]] + value[i])
+    
+    print(dp[bag_weight])
+
+# 先遍历背包，再遍历物品
+def test_complete_pack2():
+    weight = [1, 3, 4]
+    value = [15, 20, 30]
+    bag_weight = 4
+
+    dp = [0]*(bag_weight + 1)
+
+    for j in range(bag_weight + 1):
+        for i in range(len(weight)):
+            if j >= weight[i]: dp[j] = max(dp[j], dp[j - weight[i]] + value[i])
+    
+    print(dp[bag_weight])
+
+
+if __name__ == '__main__':
+    test_complete_pack1()
+    test_complete_pack2()
+```
+
+
+
 
 Go：