LeetCode Solutions | 334. Increasing Triplet Subsequence

LeetCode Solutions | 334. Increasing Triplet Subsequence | LeetCode C++ Solution

LeetCode Question: 334. Increasing Triplet Subsequence (Level : Medium)

Note:- Scroll horizontally to see the full line of code.

class Solution
{
public:
    bool increasingTriplet(vector<int> &nums)
    {
        int n = nums.size();
        vector<int> minimum(n);
        vector<int> maximum(n);
        int minElem = INT_MAX, maxElem = INT_MIN;
        for (int i = 0; i < n; i++)
        {
            int frontSideElem = nums[i], backSideElem = nums[n - i - 1];
            if (frontSideElem < minElem)
            {
                minElem = frontSideElem;
            }
            minimum[i] = minElem;
            if (backSideElem > maxElem)
            {
                maxElem = backSideElem;
            }
            maximum[n - i - 1] = maxElem;
        }
        for (int i = 1; i < n - 1; i++)
        {
            int previousMin = minimum[i - 1], nextMaximum = maximum[i + 1];
            if (previousMin < nums[i] && nextMaximum > nums[i])
            {
                return true;
            }
        }
        return false;
    }
};

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