diff --git a/knapsack.py b/knapsack.py
new file mode 100644
index 00000000..803dda8d
--- /dev/null
+++ b/knapsack.py
@@ -0,0 +1,17 @@
+
+class Solution:
+    def finding_weights(self, profit :list[int], weight:list[int], capacity:int)-> int:
+        n = len(weight) 
+        
+        dp = [[0 for i in range(capacity + 1)] for j in range(n + 1)]
+        for i in range(1, n+1):
+            for j in range(1, capacity+1):
+                if weight[i-1] > j:
+                    dp[i][j] = dp[i-1][j]
+                else:
+                    dp[i][j] = max(dp[i-1][j],profit[i-1] + dp[i-1][j-weight[i-1]])
+        
+        return dp[n][capacity]
+    
+solution = Solution()
+print(solution.finding_weights([1,2,3],[4,5,1],4))
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diff --git a/two_sum.py b/two_sum.py
new file mode 100644
index 00000000..2c951485
--- /dev/null
+++ b/two_sum.py
@@ -0,0 +1,22 @@
+# Two elements sum to target
+# Time Complexity: O(n) Space Complexity: O(n)
+class Solution:
+    def twoSum(self,nums:list[int], target: int)-> list[int]:
+        # defining the empty map
+        map ={}
+
+        # iterating through the given list
+        for index, number in enumerate(nums):
+            #  finding the differnce
+             difference = target - number
+            # if the difference is present in the map
+             if difference in map:
+                #  if present then return that index and current index
+                 return [map[difference], index]
+            #  if not present then store the number and corresponing index
+             else:
+                 map[number] = index
+         
+    
+solution = Solution()
+print(solution.twoSum([2,7,11,15],9))
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