题解 | #删除字符串中出现次数最少的字符#

package main

import "fmt"

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

	chars := make(map[rune]int)
	for _, v := range in {
		chars[v]++
	}

	min := len(in) + 1
	for _, c := range chars {
		if c < min {
			min = c
		}
	}

	for _, v := range in {
		if chars[v] == min {
			continue
		}
		fmt.Print(string(v))
	}
}