题解 | 字符串加密

package main

import (
	"fmt"
)

func main() {
	var input0 string
	fmt.Scan(&input0)

	var input1 string
	fmt.Scan(&input1)

	repeatedMap := map[byte]bool{}
	unrepeatedStr := []byte{}
	for _, b := range []byte(input0) {
		if _, ok := repeatedMap[b]; ok {
			continue
		}

		repeatedMap[b] = true
		unrepeatedStr = append(unrepeatedStr, b)
	}

	for i := 'a'; i <= 'z' && len(unrepeatedStr) <= 26; i++ {
		bi := byte(i)
		if _, ok := repeatedMap[byte(bi)]; !ok {
			unrepeatedStr = append(unrepeatedStr, bi)
		}
	}

	encryptStr := []byte{}
	for _, rawB := range []byte(input1) {
		targetIdx := rawB - 'a'
		encryptStr = append(encryptStr, unrepeatedStr[targetIdx])
	}

	fmt.Println(string(encryptStr))
}