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def prodOfNums(nums):
    if len(nums) == 0:
        return "invalid array: input an array of numbers"
    else:
        prod = 1
        ans = []
        for i in nums:
            prod *= i
        for i in range(0,len(nums)):
            ans.append(prod // nums[i])

IEdiong

from collections import deque

def shuffleClass(listOfPupils, n):
    
    #test if listOfPupils is a list, has none value or empty
    if (not isinstance(listOfPupils, list)) or (not listOfPupils):
        return []

    #takes the last 'n' items to the front using 'deque'
    else:

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from itertools import combinations

def minDifference(wakeTimes):
    # if wakeTimes is an empty array
    if not wakeTimes:
        return 0
    
    # creates an array of wakeTimes in minute
    wakeTimesInMins = list(map( lambda x: int(x[0]) * 60 + int(x[1]), [ time.split(":") for time in wakeTimes ]))

IEdiong

// 217. Contains Duplicate
// Easy

// Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct.

const containsDuplicate = (nums) => {
  //     create an empty dictionary
  //     iterate through the array
  //     for each integer in the array check if the integer position exists in the dictionary
  //     if 'yes' return 'true'

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// Singly-linked lists are already defined with this interface:
// function ListNode(x) {
//   this.value = x;
//   this.next = null;
// }
//
function solution(l, k) {
    if (l === null) return l;       // return if the linked list is empty
    
    let dummyNode = new ListNode(); // create a dummy node whose next points to the head of the given Linked List

IEdiong

function solution(matrix) {
    const hauntedRoom = {};
    const numberOfFloors = matrix.length;
    const numberOfRooms = matrix[0].length;
    let total = 0;
    
    // 1. Loop through each row
    for (let floor = 0; floor < numberOfFloors; floor++) {
    // 2. For each element in the row
        for (let room = 0; room < numberOfRooms; room++) {

IEdiong

def solution(matrix):
    M, N, diagonals = len(matrix), len(matrix[0]), []

    # 1. Get all the diagonals
    for row in range(0, M):
        col, temp, i = 0, [], row
        j = col
        
        while i >= 0 and j < N:
            temp.append(matrix[i][j])

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using namespace System.Management.Automation
using namespace System.Management.Automation.Language
 
if ($host.Name -eq 'ConsoleHost')
{
    Import-Module PSReadLine
}
#Import-Module PSColors
#Import-Module posh-git
Import-Module -Name Terminal-Icons

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Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

IEdiong

/* Pulled from https://github.com/joyent/node/blob/master/deps/uv/include/uv.h */
/* Expand this list if necessary. */
#define UV_ERRNO_MAP(XX)                                                      \
  XX(E2BIG, "argument list too long")                                         \
  XX(EACCES, "permission denied")                                             \
  XX(EADDRINUSE, "address already in use")                                    \
  XX(EADDRNOTAVAIL, "address not available")                                  \
  XX(EAFNOSUPPORT, "address family not supported")                            \
  XX(EAGAIN, "resource temporarily unavailable")                              \
  XX(EAI_ADDRFAMILY, "address family not supported")                          \