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Leetcode Problem 136. Single Number
136. Single Number
AI Mock Interview
Leetcode Solutions
Bit Manipulation using XOR
Solution Idea
Algorithm Steps
Code Implementation
Complexity Analysis
Initialize a variable
single
to 0. This will hold the unique number.
Iterate over each number in the
nums
array.
Apply XOR operation between
single
and the current number, and store the result back in
single
.
After the loop,
single
will contain the unique number that appears only once.
Return
single
.
Hash Table to Track Element Frequencies
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