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[pull] master from wisdompeak:master #314

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Merged
pull merged 2 commits into AlgorithmAndLeetCode:master from wisdompeak:master
Mar 15, 2025
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Fix integer overflow in LC260. Single Number III
- Changed `int` to `long long` for variable `s` to prevent
 overflow when handling `INT_MIN` (`-2147483648`).
- Updated `t` to use `long long` to ensure correctness in
 bit manipulation.
- Fixes issue with new test case: `nums = [1,1,0,-2147483648]`,
 where `int` overflowed due to `s & (s-1)`.
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EricccTaiwan committed Mar 11, 2025
commit 6eb1f47e40d50eba73ac822f0ff1364c57dbb66c
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,9 @@ class Solution {
public:
vector<int> singleNumber(vector<int>& nums)
{
int s = 0;
long long s = 0;
for (auto n:nums) s = s^n; // i.e. a^b
int t = s^(s&(s-1)); // only keep the rightmost set bit
long long t = s^(s&(s-1)); // only keep the rightmost set bit
int a = 0, b = 0;
for (auto n:nums)
{
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