题解 | #构建乘积数组#

/**
 * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
 *
 * 
 * @param A int整型一维数组 
 * @return int整型一维数组
 */
export function multiply(A: number[]): number[] {
    // write code here
    let res = []
    for(let i = 0; i < A.length; i++) {
        let left = A.slice(0, i), right = A.slice(i + 1, A.length)
        let left_multiply = 1, right_multiply = 1
        for(let j = 0; j < left.length; j++) {
            left_multiply *= left[j] 
        }
        for(let k = 0; k < right.length; k++) {
            right_multiply *= right[k]
        }
        res.push(left_multiply * right_multiply)
    }
    return res
}