https://leetcode.com/problems/target-sum/ should be part of DP, not Backtracking

[RishiPrakash]

https://leetcode.com/problems/target-sum/ is related to DP and DFS more and lesser to Backtracking.
Can we change it's tagging?

[seanprashad]

Hey @RishiPrakash! After taking a look at the solution to the question once more, I think you're totally right that this question relates to DFS/DP more than Backtracking.

The 'brute force' heavily resembles DFS! I'll switch it to the DFS pattern for now and make note in #10 to add DP as a second pattern - thanks!