Add example

docs/find_subset/index.html

@@ -22,7 +22,7 @@
   <meta charset="utf-8">
   <title>Multiple Subset Sum Solver</title>
   <meta name="description"
-    content="Solves subset sum problem and multiple subset sum. It returns a set of decomposed integers." />
+    content="Solves subset sum problem and multiple subset sum problem. It returns a set of decomposed integers." />
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/css/bulma.min.css">
 </head>
 

docs/index.html

@@ -86,8 +86,13 @@ <h2 id="what-is-subset-sum-problem" class="subtitle">What is subset sum problem?
 
     <h2 id="what-is-dpss" class="subtitle">What is DPSS?</h2>
     <p><a href="https://github.com/europeanplaice/subset_sum">DPSS</a> provides a tool to solve this problem without
-      any specialized math knowledge.
-      It also offers a method to solve multiple subset sum problem.</p>
+      any specialized math knowledge.</p>
+      <p>It also offers a method to solve multiple subset sum problem. For example, if you are a travel planner, and you have to allocate families to some cars, you can count on this tool to make a plan of allocation. 
+        Given each member of the family are [2, 3, 2, 4, 5, 3, 2] and the capacities of each car are [4, 5, 8, 4],
+        you can allocate the families to the cars as follows:</p>
+      <p>[pattern => [([4, ] [4, ]),  ([2, 2, ] [4, ]),  ([2, 3, ] [5, ]),  ([3, 5, ] [8, ])]
+        , pattern => [([4, ] [4, ]),  ([5, ] [5, ]),  ([2, 2, ] [4, ]),  ([2, 3, 3, ] [8, ])]
+        ]</p>
 
     <h2 id="how-to-use-dpss" class="subtitle">How to use DPSS?</h2>
     <p>The easiest way to use this tool is the <a