题解 | #把数字翻译成字符串#

import java.util.HashMap;

public class Solution {

    public int solve(String nums) {
        // write code here
        char[] charArray = nums.toCharArray();
        int ans = process(charArray, 0, charArray.length - 1);
        return ans;
    }

    public int process(char[] charArray, int cur, int end) {
        if (cur > end) return 1;
        if (charArray[cur] == '0') return 0;
        int ans = 0;
        if (cur + 1 <= end && ((charArray[cur] - '0') * 10 + charArray[cur + 1] - '0') < 27) {
            ans = process(charArray, cur + 2, end);
        }
        ans += process(charArray, cur + 1, end);
        return ans;
    }
}