#include <stdio.h>
#include <string.h>
int main(){
	int n;
	scanf ("%d",&n);
	int q=n+1;
	while (q--){
		char a[1005];
		gets (a);
		int b=strlen (a);
		for (int i=b-1;i>=0;i--){
			if (a[i]>=97&&a[i]<=122){
				printf ("%c",a[i]);
			}
		}
		printf ("\n");
	}
	return 0;
}

语法题

from math import sqrt,ceil,gcd,log;re=lambda:map(int,input().strip().split())
t, = re()
for _ in range(t):
    s = input()[::-1]
    for i in s:
        if ord('0') <= ord(i) <= ord('9') or i == ' ':
            continue
        print(i, end='')
    print()