首先编程实现读入一串字符创建一棵二叉排序树，然后分别实现：二叉排序树的查找；二叉排序树的插入；二叉排序树的删除等操作。

好的，下面是实现代码：

class TreeNode:
    def __init__(self, value):
        self.value = value
        self.left = None
        self.right = None

class BinarySearchTree:
    def __init__(self):
        self.root = None

    def insert(self, value):
        if not self.root:
            self.root = TreeNode(value)
        else:
            self._insert(value, self.root)

    def _insert(self, value, node):
        if value < node.value:
            if node.left:
                self._insert(value, node.left)
            else:
                node.left = TreeNode(value)
        else:
            if node.right:
                self._insert(value, node.right)
            else:
                node.right = TreeNode(value)

    def search(self, value):
        return self._search(value, self.root)

    def _search(self, value, node):
        if not node:
            return False
        elif node.value == value:
            return True
        elif value < node.value:
            return self._search(value, node.left)
        else:
            return self._search(value, node.right)

    def delete(self, value):
        self._delete(value, self.root)

    def _delete(self, value, node):
        if not node:
            return node
        if value < node.value:
            node.left = self._delete(value, node.left)
        elif value > node.value:
            node.right = self._delete(value, node.right)
        else:
            if not node.left:
                return node.right
            elif not node.right:
                return node.left
            else:
                temp = self._get_min_node(node.right)
                node.value = temp.value
                node.right = self._delete(temp.value, node.right)
        return node

    def _get_min_node(self, node):
        while node.left:
            node = node.left
        return node

可以使用以下代码进行测试：

bst = BinarySearchTree()
list_input = list(map(int, input().split()))
for num in list_input:
    bst.insert(num)

print("Binary search tree created!")
print("Search for 5: ", bst.search(5))
print("Search for 10: ", bst.search(10))
print("Delete 5 from the tree")
bst.delete(5)
print("Search for 5: ", bst.search(5))