99.84 %
class Solution {
public int removeElement(int[] nums, int val) {
if (nums == null || nums.length == 0) {
return 0;
}
int left = 0;
int right = 0;
for (right = 0; right < nums.length; right++) {
if (nums[right] != val) {
nums[left] = nums[right];
left++;
}
}
return left;
}
}
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