3483. 不同三位偶数的数目

题目链接：https://leetcode.cn/problems/unique-3-digit-even-numbers/description/

JavaScript

执行用时分布4ms 击败100.00%使用 JavaScript 的用户

/**
 * @param {number[]} digits
 * @return {number}
 */
var totalNumbers = function(digits) {
    const mySet = new Set();
    const n = digits.length;
    let arr = []
    for (let i = 0; i < n; i++) {
        let num = digits[i]*100;
        let j = 0;
        while (j < n) {
            let temp = num;
            if ((j+1)% n == i) {
                j++;
            }
            temp += digits[ (j+1)% n ]*10;
            if (temp >= 100) {
                let k = (j+2) % n;
                for (let k = 0; k < n; k++) {
                    let res = temp;
                    // console.log("temp: ",temp,"i", i, "j: ", j, "k: ", k)
                    if (k != (j+1) % n && k != i) {
                        if (digits[k] % 2 == 0) {
                            res+= digits[k];
                            mySet.add(res);
                        }
                    }
                }
            }
            j++;
        }
    }
    return mySet.size;
};