128. Longest Consecutive Sequence (java)

Author: bluesword12350

solution/0128.Longest Consecutive Sequence/Solution.java

@@ -0,0 +1,18 @@
+class Solution {
+    public int longestConsecutive(int[] nums) {
+        if (nums.length == 0) return 0;
+        Arrays.sort(nums);
+        int start = 0, casch = nums[0], longest = 0;
+        for (int i = 1; i < nums.length; i++) {
+            int nc = nums[i] , con = nc - casch;
+            if (con == 0) {
+                start++;
+            } else if (con != 1) {
+                longest = Math.max(i - start, longest);
+                start = i;
+            }
+            casch = nc;
+        }
+        return Math.max(nums.length - start, longest);
+    }
+}