1 class Solution { 2     public boolean isRectangleOverlap(int[] rec1, int[] rec2) { 3         if((rec2[0]<=rec1[0] && rec2[2]<=rec1[0]) || (rec2[0]>=rec1[2] && rec2[2]>=rec1[2])) { 4             return false; 5         }else { 6             if((rec2[1]<=rec1[1] && rec2[3]<=rec1[1]) || (rec2[1]>=rec1[3] && rec2[3]>=rec1[3])) { 7                 return false; 8             } 9         }10         return true;11         12     }13 }