feat: 2025-10-23打卡

1037.valid-boomerang.java

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+/*
+ * @lc app=leetcode id=1037 lang=java
+ *
+ * [1037] Valid Boomerang
+ */
+
+// @lc code=start
+class Solution {
+    /**
+     * y1 / x1 = y0 / x0
+     * x0*y1 = x1*y0
+     * 
+     * @param points
+     * @return
+     */
+    public boolean isBoomerang(int[][] points) {
+        int x0 = points[1][0] - points[0][0];
+        int y0 = points[1][1] - points[0][1];
+        int x1 = points[2][0] - points[0][0];
+        int y1 = points[2][1] - points[0][1];
+        return x0 * y1 != x1 * y0;
+    }
+}
+// @lc code=end
+