Leetcode题解之 —— 各位相加

思路

暴力遍历解法

题解

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/**
 * @param {number} num
 * @return {number}
 */
var addDigits = function (num) {
  while (String(num).length !== 1) {
    let total = 0;

    while (num) {
      total += num % 10;
      num = ~~(num / 10);
    }

    num = total;
  }

  return num;
};