鐵人檔案
在極少相關背景知識的情況下，嘗試自己摸索leetcode，培養java為主的編程能力。
畢竟未來也是躲不掉的，不如就趁著這個機會好好打下基礎。
You are given a phone number as a string number. number consists of digits, spac...
Given an integer array nums of length n, you want to create an array ans of leng...
A sentence consists of lowercase letters ('a' to 'z'), digits ('0' to '9'), hyph...
You are given coordinates, a string that represents the coordinates of a square...
The product difference between two pairs (a, b) and (c, d) is defined as (a * b)...
You are given a 2D integer array ranges and two integers left and right. Each ra...
Given an integer n, return true if n has exactly three positive divisors. Otherw...
You are given a 0-indexed integer array nums. For each index i (1 <= i <=...
An integer x is numerically balanced if for every digit d in the number x, there...
Given a 0-indexed integer array nums of size n, find the maximum difference betw...
