C :

#include <stdio.h>
#include <stdlib.h>
#include<string.h>
int main()
{
    char a[1000];
    scanf("%s",a);
    int i,num[256]={0};
    for(i=0;i<strlen(a);i++)
    {
        if(a[i]=='.')
            break;
        else
        num[a[i]]++;
    }
 for(i=0;i<256;i++)
      if(num[i]!=0)
       printf("%c",i);
       printf("\n");
 for(i=0;i<256;i++)
      if(num[i]!=0)
        printf("%d",num[i]);
        printf("\n");
    return 0;
}

C++ :

#include <bits/stdc++.h>
using namespace std;
int main (){
	int a[26]={0};
	int i;
	char t;
	char s[100];
	gets(s);
	for(i=0;i<strlen(s)-1;i++){
		a[s[i]-97]++;
	}
	for(i=0;i<26;i++){
		if(a[i]!=0){
			t=i+'a';
			cout<<t;
		}
	}
	cout<<endl;
	for(i=0;i<26;i++){
		if(a[i]!=0){
			cout<<a[i];
		}
	}
	cout<<endl;
	return 0;
}

Pascal :

var
  c:char;
  i:integer;
  a:array [1..26] of integer;
begin
  for i:=1 to 26 do
    a[i]:=0;
  read(c);
  while c<>'.' do
  begin
    if (c>='a') and (c<='z')  then  //若能确保输入是小写的,这行可以不要  
       inc(a[ord(c)-ord('a')+1]);
    read(c);   
  end;
  for i:=1 to 26 do
    if a[i]<>0 then
       write(chr(ord('a')+i-1));
  writeln;     
  for i:=1 to 26 do
    if a[i]<>0 then
       write(a[i]);
  writeln;     
  
end.

Java :

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner scanner=new Scanner(System.in);
		String scanStr=scanner.nextLine();
		char[] charArray=scanStr.toCharArray();
		String charString="";
		String charCount="";
		for(int i=0;i<26;i++){
			Map map=new HashMap();
			char chr=(char)(97+i);
			int count=0;
			for(int j=0;j<(scanStr.endsWith(".")?charArray.length-1:charArray.length);j++){
				char tmpChr=charArray[j];
				if(chr==tmpChr){
					count++;
				}
				if(count>0){
					map.put("chr", chr);
					map.put("count", count);
				}
			}
			if(!map.isEmpty()){
				charString=charString+chr;
				charCount=charCount+count;
			}
		}
		System.out.println(charString);
		System.out.println(charCount);
	}
}

Python :

a=input()
x1=x2=""
for i in range(97,97+26+1):
    s=chr(i)
    n=a.count(s)
    if n>0:
        x1=x1+s
        x2=x2+str(n)
print(x1)
print(x2)