223. Rectangle Area

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LeetCode

Explanation

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class Solution {
    public int computeArea(int A, int B, int C, int D, int E, int F, int G, int H) {
        int areaRectA=(C-A)*(D-B);
        int areaRectB=(G-E)*(H-F);
        
        int left=Math.max(A,E);
        int right=Math.min(C,G);
        int top=Math.min(D,H);
        int bottom=Math.max(B,F);
        
        // If overlap
        int overlap=0;
        if(left<right&&bottom<top) overlap=(right-left)*(top-bottom);
        
        return areaRectA+areaRectB-overlap;
    }
}

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