今天数据结构课小测考了两道关于树的题目,总结下来,顺便学习递归:
leetcode 100
\100. Same Tree
Given two binary trees, write a function to check if they are the same or not.
Two binary trees are considered the same if they …
题目:
Validate if a given string can be interpreted as a decimal number.
Some examples:"0" > true" 0.1 " > true"abc" > false"1 a" > false"2e10" > true" -90e3 " > t…