69. Sqrt\(x\)
69. Sqrt(x)
class Solution:
def mySqrt(self, x: int)
Binary Search
700. Search in a Binary Search Tree
700. Search in a Binary Search Tree
如果說題目只是問「樹」中是否存在一個節點有某個值，
91. Decode Ways
91. Decode Ways
這題的題目是如果說給出一串字串，由數字組成，如果要轉換成英文，可以轉換成幾種方式？其中比較特別的就是如果兩個數字剛好不是零為開頭，那像是 "11"
1011. Capacity To Ship Packages Within D Days
1011. Capacity To Ship Packages Within D Days
class Solution:
875. Koko Eating Bananas
875. Koko Eating Bananas
class Solution:
def minEatingSpeed(self, piles:
35. Search Insert Position
35. Search Insert Position
class Solution:
def searchInsert(self, nums:
852. Peak Index in a Mountain Array
852. Peak Index in a Mountain Array
1. 在閉區間搜尋
2.
162. Find Peak Element
162. Find Peak Element
如果下一個值比現在這個值大，代表可以繼續往上爬
如果下一個值比現在這個值小，代表頂峰在後面
題目有可能有不只一個頂峰，但是題目說可以回傳任意一個頂峰即可。
374. Guess Number Higher or Lower
374. Guess Number Higher or Lower
# The guess API is
367. Valid Perfect Square
367. Valid Perfect Square
class Solution:
def isPerfectSquare(self, num: