bool searchMatrix(int** matrix, int matrixRowSize, int matrixColSize, int target) {
if(matrixRowSize==0 || matrixColSize==0)
return false;
int x = matrixRowSize-1;
int y = 0;
while(1){
if(matrix[x][y]==target)
return true;
else if(matrix[x][y] < target)
y++;
else
x--;
if(x<0 || y > matrixColSize-1)
return false;
}
}
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