Shifting Letters | LeetCode 848 | String | Facebook

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[@NareshGupta]

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[@abhishekkr8077]

1st solution me n-2 Q kiya sir?

[@NareshGupta]

brute force se start krna chaiye fir optimize karo agar possible ho to.

[@gurudassulebhavikar]

The solution is fine. But you did not explain the formula ((ch[i] - 'a') + sum)%26 + 'a'. Why did you first minus the char[i] with 'a'? Also, why add it back at the end?