题解 | #手机键盘#

#include <iostream>
#include<string>
using namespace std;
int main() {
    char phone [8][5] = { "abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz" };
    int waiting = 2;
    string s;
    while (cin >> s) {
        int tag = -1;
        int time = 0;
        int num = size(s);//j统计字符数组长度
        for (int i = 0; i < num; i++) {
            for (int j = 0; j < 8; j++) {
                for (int k = 0; k < 5; k++) {
                    if (s[i] == phone[j][k]) {
                        if (tag != j) {
                            time += k + 1;
                        } else {
                            time += k + 3;
                        }
                        tag = j;
                    }
                }
            }
        }
        printf("%d\n", time);
    }
    return 0;
}