void InsertingSort(int *p,int length){
if(p==NULL) return ;
for(int i=1;i<length;i++){
int j=i-1;
int key=p[i];
while(j>=0&&p[j]>key) p[j+1] = p[j--];
p[j+1] = key;
}
}
void InsertingSort(int *p,int length){
if(p==NULL) return ;
for(int i=1;i<length;i++){
int j=i-1;
int key=p[i];
while(j>=0&&p[j]>key) p[j+1] = p[j--];
p[j+1] = key;
}
}