(1)遍历
class Solution {
public:
void moveZeroes(vector<int>& nums) {
int count=0;
int i=0;
while(i<nums.size()-count) {
if(nums[i]==0) {
count++;
for(int j=i;j<nums.size()-count;j++) {
nums[j]=nums[j+1];
}
nums[nums.size()-count]=0;
} else i++;
}
return;
}
};