feat: 2025-10-23打卡

1046.last-stone-weight.java

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+/*
+ * @lc app=leetcode id=1046 lang=java
+ *
+ * [1046] Last Stone Weight
+ */
+
+// @lc code=start
+class Solution {
+    public int lastStoneWeight(int[] stones) {
+        PriorityQueue<Integer> pq = new PriorityQueue<>((a, b)->b-a);
+        for(int i = 0; i < stones.length; i++) {
+            pq.add(stones[i]);
+        }
+        int a, b;
+        while(pq.size() > 1) {
+            a = pq.poll();
+            b = pq.poll();
+            pq.add(a < b?b-a:a-b);
+        }
+        return pq.peek();
+    }
+}
+// @lc code=end
+