refactor ex11_32

ch11/README.md

@@ -98,3 +98,4 @@ std::pair<std::map<std::string, std::vector<int>>::iterator, bool> // return
 ## [Exercise 11.24 ~ 11.26](ex11_24_25_26.cpp)
 ## [Exercise 11.27 ~ 11.30](ex11_27_28_29_30.cpp)
 ## [Exercise 11.31](ex11_31.cpp)
+## [Exercise 11.32](ex11_32.cpp)

ch11/ex11_32.cpp

@@ -1,31 +1,36 @@
-//! @Alan
-//!
-//!
-//! Exercise 11.32:
-//! Using the multimap from the previous exercise, write a program to
-//! print the list of authors and their works alphabetically.
-//!
+//
+//  ex11_32.cpp
+//  Exercise 11.32
+//
+//  Created by pezy on 12/17/14.
+//  Copyright (c) 2014 pezy. All rights reserved.
+//
+//  Using the multimap from the previous exercise, write a program to print the list of **authors and their works** alphabetically.
 
-#include <iostream>
 #include <map>
+#include <set>
 #include <string>
-#include <algorithm>
-#include <vector>
-
+#include <iostream>
 
+using std::string;
 
 int main()
 {
-    //! define and initialize the multimap
-    std::multimap<std::string, std::string> m = {{"lan","z111"},{"alan","a112"},{"Alan","a113"},{"cWang","g222"}};
-
-    //! print the map without sorting
-    for(const auto &e : m)
-        std::cout << e.first << " " << e.second << "\n";
-    std::cout << "\n";
-
-
-
-    return 0;
-}
-
+    std::multimap<string, string> map{
+        {"alan", "DMA"},
+        {"pezy", "LeetCode"},
+        {"alan", "CLRS"},
+        {"wang", "FTP"},
+        {"pezy", "CP5"},
+        {"wang", "CPP-Concurrency"}
+    };
+    std::map<string, std::multiset<string>> ordermap;
+    for (const auto &e : map)
+        ordermap[e.first].insert(e.second);
+    for (const auto &e : ordermap) {
+        std::cout << e.first << ": ";
+        for (const auto &work : e.second)
+            std::cout << work << " ";
+        std::cout << std::endl;
+    }
+}