Given an array nums
, write a function to move all 0
's to the end of it while maintaining the relative order of the non-zero elements.
For example, given nums = [0, 1, 0, 3, 12]
, after calling your function, nums
should be [1, 3, 12, 0, 0]
.
Note:
- You must do this in-place without making a copy of the array.
- Minimize the total number of operations.
主要思路:保持两个指针,保证两个指针之间[zero_bit,nonzero_bit)范围内都是0,然后调换首个0和首个非零
void moveZeroes(int* nums, int numsSize)
{
int zero_bit = ;
int nonzero_bit = ;
while(nonzero_bit<numsSize)
{
if(nums[nonzero_bit] != )
{
if(nonzero_bit != zero_bit)
{
nums[zero_bit++] = nums[nonzero_bit];
nums[nonzero_bit] = ;
}else{
++zero_bit;
}
}
++nonzero_bit;
}
}