27. 移除元素 leetcode

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class Solution {
    func removeElement(_ nums: inout [Int], _ val: Int) -> Int {
        var i = 0;
        while i < nums.count {
            if nums[i] == val{
                nums.remove(at: i)
            }else{
                i += 1
            }
        }
        return nums.count;
    }
}