![](\"https:\/\/www.17golang.com\/uploads\/20240123\/170600472265af90f29d451.jpg\")
<\/p>\n<\/b> <\/p>\n\u7528Python\u5b9e\u73b0\u7684B\u6811\u63d2\u5165\u7b97\u6cd5\u89e3\u6790\u53ca\u56fe\u793a<\/h1>\n
\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u4e3b\u673a\u5b9d\u8d1d\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n
B\u6811\u662f\u9ad8\u5ea6\u5e73\u8861\u7684\u4e8c\u53c9\u641c\u7d22\u6811\uff0c\u8fdb\u884c\u63d2\u5165\u64cd\u4f5c\uff0c\u8981\u5148\u83b7\u53d6\u63d2\u5165\u8282\u70b9\u7684\u4f4d\u7f6e\uff0c\u9075\u5faa\u8282\u70b9\u6bd4\u5de6\u5b50\u6811\u5927\uff0c\u6bd4\u53f3\u5b50\u6811\u5c0f\uff0c\u5728\u9700\u8981\u65f6\u62c6\u5206\u8282\u70b9\u3002<\/p>\n
<\/p>\n
BreeInsertion(T, k)r root[T]if n[r] = 2t - 1
s = AllocateNode()
root[T] = s
leaf[s] = FALSE
n[s] <- 0
c1[s] <- r
BtreeSplitChild(s, 1, r)
BtreeInsertNonFull(s, k)else BtreeInsertNonFull(r, k)BtreeInsertNonFull(x, k)i = n[x]if leaf[x]
while i \u2265 1 and k < keyi[x]
keyi+1 [x] = keyi[x]
i = i - 1
keyi+1[x] = k
n[x] = n[x] + 1else while i \u2265 1 and k < keyi[x]
i = i - 1
i = i + 1
if n[ci[x]] == 2t - 1
BtreeSplitChild(x, i, ci[x])
if k &rt; keyi[x]
i = i + 1
BtreeInsertNonFull(ci[x], k)BtreeSplitChild(x, i)BtreeSplitChild(x, i, y)z = AllocateNode()leaf[z] = leaf[y]n[z] = t - 1for j = 1 to t - 1
keyj[z] = keyj+t[y]if not leaf [y]
for j = 1 to t
cj[z] = cj + t[y]n[y] = t - 1for j = n[x] + 1 to i + 1
cj+1[x] = cj[x]ci+1[x] = zfor j = n[x] to i
keyj+1[x] = keyj[x]keyi[x] = keyt[y]n[x] = n[x] + 1<\/code><\/pre>\n\u7528Python\u5b9e\u73b0B\u6811\u63d2\u5165\u7b97\u6cd5<\/h3>\nclass BTreeNode:
def __init__(self, leaf=False):
self.leaf = leaf
self.keys = []
self.child = []
class BTree:
def __init__(self, t):
self.root = BTreeNode(True)
self.t = t
def insert(self, k):
root = self.root
if len(root.keys) == (2 * self.t) - 1:
temp = BTreeNode()
self.root = temp
temp.child.insert(0, root)
self.split_child(temp, 0)
self.insert_non_full(temp, k)
else:
self.insert_non_full(root, k)
def insert_non_full(self, x, k):
i = len(x.keys) - 1
if x.leaf:
x.keys.append((None, None))
while i >= 0 and k[0] < x.keys[i][0]:
x.keys[i + 1] = x.keys[i]
i -= 1
x.keys[i + 1] = k
else:
while i >= 0 and k[0] < x.keys[i][0]:
i -= 1
i += 1
if len(x.child[i].keys) == (2 * self.t) - 1:
self.split_child(x, i)
if k[0] > x.keys[i][0]:
i += 1
self.insert_non_full(x.child[i], k)
def split_child(self, x, i):
t = self.t
y = x.child[i]
z = BTreeNode(y.leaf)
x.child.insert(i + 1, z)
x.keys.insert(i, y.keys[t - 1])
z.keys = y.keys[t: (2 * t) - 1]
y.keys = y.keys[0: t - 1]
if not y.leaf:
z.child = y.child[t: 2 * t]
y.child = y.child[0: t - 1]
def print_tree(self, x, l=0):
print(\"Level \", l, \" \", len(x.keys), end=\":\")
for i in x.keys:
print(i, end=\" \")
print()
l += 1
if len(x.child) > 0:
for i in x.child:
self.print_tree(i, l)
def main():
B = BTree(3)
for i in range(10):
B.insert((i, 2 * i))
B.print_tree(B.root)
if __name__ == '__main__':
main()<\/code><\/pre>\n\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u7528Python\u5b9e\u73b0\u7684B\u6811\u63d2\u5165\u7b97\u6cd5\u89e3\u6790\u53ca\u56fe\u793a\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6570\u636e\u5e93\u77e5\u8bc6\uff01<\/p>\n
\u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1a\u7f51\u6613\u4f0f\u7fb2 \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb \u5220\u9664 <\/p>\n
\n- \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u7528Python\u5b9e\u73b0\u7684B\u6811\u63d2\u5165\u7b97\u6cd5...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199641","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199641","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199641"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199641\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}