s0136_single_number.rs

struct Solution;

//leetcode submit region begin(Prohibit modification and deletion)
impl Solution {
    pub fn single_number(nums: Vec<i32>) -> i32 {
        let mut result = 0;
        for num in nums {
            result ^= num;
        }
        result
    }
}
//leetcode submit region end(Prohibit modification and deletion)

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test() {
        assert_eq!(Solution::single_number(vec![2, 2, 1]), 1);
        assert_eq!(Solution::single_number(vec![4, 1, 2, 1, 2]), 4);
    }
}