Method fail

Two Pointers/457. Circular Array Loop/src/main.rs:49–56

reach a fail node, fail this way

(i: usize, j: usize, nums: &Vec<i32>, vec: &mut Vec<i32>)

    /// reach a fail node, fail this way
    pub fn fail(i: usize, j: usize, nums: &Vec<i32>, vec: &mut Vec<i32>) {
        let mut idx = i;
        while idx != j {
            let next = Self::next_idx(idx, nums[idx], nums.len());
            vec[idx] = 0;
            idx = next;
        }
    }
}

#[cfg(test)]