2248

Author: jiangshanmeta

src/2248.intersection-of-multiple-arrays.2331/solution.java

@@ -0,0 +1,18 @@
+class Solution {
+    public List<Integer> intersection(int[][] nums) {
+        int[] counts = new int[1001];
+        for(int[] list: nums){
+            for(int n:list){
+                counts[n]++;
+            }
+        }
+        List<Integer> result = new ArrayList<>();
+        final int L = nums.length;
+        for(int i=1;i<counts.length;i++){
+            if(counts[i] == L){
+                result.add(i);
+            }
+        }
+        return result;
+    }
+}