- Black Mamba·Last edited by Black Mamba on Oct 2, 2021Linked with GitHubContributed by
There is no commentSelect some text and then click Comment, or simply add a comment to this page from below to start a discussion.The Coding Diaries
Leetcode
- 1. Two Sum Date : 2021/09/22
- 2. Add Two Numbers Date : 2021/09/22
- 3. Longest Substring Without Repeating Characters Date : 2021/09/25
- 4. Median of Two Sorted Arrays Date : 2021/10/02
tags: Leetcode , C , C++
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**Lab 4: UART0, PL011**
This Lab does the same as Lab 3, but it prints the serial number on UART0. As such, it can be used easily with qemu. GPIO.h #define MMIO_BASE 0x3F000000 #define GPFSEL0 ((volatile unsigned int*)(MMIO_BASE+0x00200000)) #define GPFSEL1 ((volatile unsigned int*)(MMIO_BASE+0x00200004)) #define GPFSEL2 ((volatile unsigned int*)(MMIO_BASE+0x00200008)) #define GPFSEL3 ((volatile unsigned int*)(MMIO_BASE+0x0020000C)) #define GPFSEL4 ((volatile unsigned int*)(MMIO_BASE+0x00200010))
Nov 13, 2021**Lab 0: Bare Minimum**
Just test our toolchain. The resulting kernel8.img should boot on Raspberry Pi, and stop the CPU cores in an infinite loop. You can check that by running Assembly When the control is passed to kernel8.img, the environment is not ready for C. Therefore we must implement a small preambule in Assembly. CPU has 4 cores. All of them are running the same infinite loop for now. .section ".text.boot" .global _start
Oct 25, 20212. Add Two Numbers
You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order, and each of their nodes contains a single digit. Add the two numbers and return the sum as a linked list. You may assume the two numbers do not contain any leading zero, except the number 0 itself. Example 1: Input: l1 = [2,4,3], l2 = [5,6,4] Output: [7,0,8] Explanation: 342 + 465 = 807. Example 2: Input: l1 = [0], l2 = [0]
Oct 4, 20211. Two Sum
Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not use the same element twice. You can return the answer in any order. Example 1: Input: nums = [2,7,11,15], target = 9 Output: [0,1] Output: Because nums[0] + nums[1] == 9, we return [0, 1].
Oct 4, 2021
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