//面试题29：顺时针打印矩阵

void PrintMatrixClockwisely(int** numbers,int columns,int rows)

{

if(number==nullptr || colunms<=0 || rows<=0)

return;

int start=0;

while(columns>start*2 && rows>start*2)

{

PrintMatrixInCircle(numbers,columns,rows,start);

++start;

}

}

void PrintMatrixInCircle(int** numbers,int columns,int rows,int start)

{

int endX=columns-1-start;

int endY=rows-1-start;

//从左到右打印一行

for(int i=start;i<=endX;++i){

int number=number[start][i];

printNumber(number);

}

//从上到下打印一行

if(start<endY){

for(int i=start+1;i<endY;++i){

int number=number[i][endX];

printNumber[number];

}

}

//从右到左打印一行

if(start<endX && start<endY){

for(int i=endX-1;i>=start;--i){

int number=number[endY][i];

printNumber(number);

}

}

//从下到上打印一行

if(start<endX && start<endY-1){

for(int i=endY-1;i>=start+1;--i){

int number=number[i][start];

printNumber(number);

}

}

}