missing-number.rs

#![allow(dead_code, unused, unused_variables)]

fnmain(){
println!("{}",Solution::missing_number1(vec![3,0,1]));
println!(
"{}",
Solution::missing_number1(vec![9,6,4,2,3,5,7,0,1])
);
}

structSolution;

implSolution{
pubfnmissing_number(nums:Vec<i32>) -> i32{
(0..=nums.len()asi32).sum::<i32>() - nums.into_iter().sum::<i32>()
}

pubfnmissing_number1(nums:Vec<i32>) -> i32{
let l = nums.len()asi32;
 nums.into_iter()
.enumerate()
.fold(l, |l,(x, y)| x asi32 ^ y ^ l)
}
}