find the difference | find the difference leetcode | leetcode 389 | two solutions

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#String #Xor #SingleNumber #FindTheDifference #Programming #Interview #Practice #September #Leetcode #Easy #389 #Algorithm #DataStructure #Java #Preparation #NG #nickode #CookCodeTravel #CCT
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We can avoid the 3rd loop if we chk --f[c-'a']<0 and return the character

naidusunny