impl Solution { pub fn decrypt(code: Vec, k: i32) -> Vec { let n = code.len(); let mut result: Vec = Vec::new(); if k == 0 { let mut i: usize = 0; while i < n { result.push(0); i = i + 1; } return result; } let mut sum: i32 = 0; if k > 0 { let mut j: usize = 0; while j < k as usize { sum = sum + code[(1 + j) % n]; j = j + 1; } result.push(sum); let mut i: usize = 1; while i < n { sum = sum - code[i % n] + code[(i + k as usize) % n]; result.push(sum); i = i + 1; } } else { let abs_k: usize = (-k) as usize; let mut j: usize = 0; while j < abs_k { sum = sum + code[(n - abs_k + j) % n]; j = j + 1; } result.push(sum); let mut i: usize = 1; while i < n { sum = sum - code[(i + n - abs_k - 1) % n] + code[(i + n - 1) % n]; result.push(sum); i = i + 1; } } result } }