vector 二维数组,二维vector赋值
# include iostream # includevectorvoidmain ({ inta=2; int b=4; //初始化方法1//STD :3360 vectors TD :3360 vectorintvec (a,STD33603360vectorint ) b ); //2行4vectorvectorint (bvec(a,vectorint ) b ); int m=vec.size (; //实际行中的元素数int n=vec[0].size (; //实际列的元素数}
//初始化方法2//STD :3360 vectors TD 33603360 vectorintvec1=STD : vector int (a,STD 3360: vector vector
//初始化方法3//STD :3360 vectors TD 33603360 vectorintvec2=STD : vector int (a,STD 3360: vector vector