How to count total item from two file

Question

hey..i got two text file and i need to total up the occurrance in tht two files..
For example:
my first file:
1 2 3 4
1 3 4

my second file:
1 3 4
2 5

After total up the item in this two file:
1: 3
2: 2
3: 3
4:3
using Dictionary <> to do this..hope someone will help me...thank you

Vulpes · Answer

If you mean in descending order by value rather than by key then try this: using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Windows.Forms; class Test { static void Main() { string[] lines = (File.ReadAllLines(file1.txt).Concat(File.ReadAllLines(file2.txt))).ToArray(); var dict = new Dictionary (); foreach(string line in lines) { string temp = line.Replace( ); // get rid of spaces if (temp.Length == 0) continue; // ignore blank lines foreach(char c in temp) { string digit = c.ToString(); if (dict.ContainsKey(digit)) { dict[digit]++; } else { dict.Add(digit 1); } } } string[] results = (from key in dict.Keys orderby dict[key] descending select key + : + dict[key]).ToArray(); MessageBox.Show(String.Join(
 results)); } }

Sin Yee · Answer

nono....i mean i got two files.. File 1 got two lines : 1 2 3 4 1 3 4 File 2 got two lines: 1 3 4 2 5 i need to count total value for each items in those two files 1:3 2:2 3:3 4:3 5:1 and sort in descending order.

Andrew Fenster · Answer

Are you asking how to open and read the files?

Sin Yee · Answer

but those two file is separate ..how to count like that..?

Andrew Fenster · Answer

The Dictionary part is pretty easy. To declare the dictionary: Dictionary counter as new Dictionary (); Each time you count an object: if (counter.ContainsKey(key) counter[key]++; else counter.Add(key 1); To sort in descending order: var items = from key in counter.Keys orderby counter[key] descending select key; foreach (int key in items) Console.WriteLine({0}: {1} key counter[key]);

Sin Yee · Answer

because i need to sort them in descending order..

Suthish Nair · Answer

why using Dictionary