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Create 22 July Smallest Positive Missing #846

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Merged
merged 1 commit into from
Jul 21, 2025
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Create 22 July Smallest Positive Missing #846

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22 changes: 22 additions & 0 deletions 22 July Smallest Positive Missing
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
class Solution {
public:
int missingNumber(vector<int> &nums) {
// code here
int n=nums.size();

for (int i = 0; i < n; i++) {
while (nums[i] > 0 && nums[i] <= n && nums[nums[i] - 1] != nums[i]) {
swap(nums[i], nums[nums[i] - 1]);
}
}

// Second pass: find the first index where nums[i] != i + 1
for (int i = 0; i < n; i++) {
if (nums[i] != i + 1)
return i + 1;
}

return n + 1;
}
};

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