Problem 93

README.md

@@ -1531,4 +1531,16 @@ For example, given {'CSC300': ['CSC100', 'CSC200'], 'CSC200': ['CSC100'], 'CSC10
 
 [Solution](https://github.com/Li-Victor/daily-coding-problem/blob/master/solutions/81-90/Problem92.js)
 
+---
+
+## Problem 93
+
+This problem was asked by Apple.
+
+Given a tree, find the largest tree/subtree that is a BST.
+
+Given a tree, return the size of the largest tree/subtree that is a BST.
+
+[Solution](https://github.com/Li-Victor/daily-coding-problem/blob/master/solutions/81-90/Problem93.js)
+
 ---

companies/Apple.md

@@ -46,4 +46,16 @@ And there are 4 12's in the table.
 
 [Solution](https://github.com/Li-Victor/daily-coding-problem/blob/master/solutions/71-80/Problem74.js)
 
+---
+
+## Problem 93
+
+This problem was asked by Apple.
+
+Given a tree, find the largest tree/subtree that is a BST.
+
+Given a tree, return the size of the largest tree/subtree that is a BST.
+
+[Solution](https://github.com/Li-Victor/daily-coding-problem/blob/master/solutions/81-90/Problem93.js)
+
 ---

solutions/81-90/Problem88.js

@@ -7,6 +7,8 @@
 //
 // O(A/B) Time complexity
 // O(1) Space complexity
+//
+// https://leetcode.com/problems/divide-two-integers/
 
 /**
  * division from two integers a / b

solutions/91-100/Problem93.js

@@ -0,0 +1,7 @@
+// Problem 93
+//
+// This problem was asked by Apple.
+//
+// Given a tree, find the largest tree/subtree that is a BST.
+//
+// Given a tree, return the size of the largest tree/subtree that is a BST.

topics/Tree.md

@@ -193,4 +193,16 @@ A binary search tree is a tree with two children, left and right, and satisfies
 
 [Solution](https://github.com/Li-Victor/daily-coding-problem/blob/master/solutions/81-90/Problem89.js)
 
+---
+
+## Problem 93
+
+This problem was asked by Apple.
+
+Given a tree, find the largest tree/subtree that is a BST.
+
+Given a tree, return the size of the largest tree/subtree that is a BST.
+
+[Solution](https://github.com/Li-Victor/daily-coding-problem/blob/master/solutions/81-90/Problem93.js)
+
 ---