kun 10/6/22:48

static/js/tool.js

@@ -68,6 +68,34 @@ let tool = {
       }
     })
     return [...map.values()]
+  },
+
+  classifier: function (array, val) {
+    let map = {}
+    let dest = []
+    let len = array.length
+    for (let i = 0; i < len; i++) {
+      let ai = array[i]
+      if (!map[ai.val]) {
+        dest.push({
+          val: ai.val,
+          data: [ai]
+        })
+        map[ai.val] = ai
+      } else {
+        // eslint-disable-next-line camelcase
+        let dest_len = dest.length
+        // eslint-disable-next-line camelcase
+        for (let j = 0; j < dest_len; j++) {
+          let dj = dest[j]
+          if (dj.val === ai.val) {
+            dj.data.push(ai)
+            break
+          }
+        }
+      }
+    }
+    return dest
   }
 }