def removeDuplicates(self, s: str, k: int) -> str:
stack = []
for char in s:
if not stack:
stack.append((char, 1))
else:
last_char, last_cnt = stack[-1]
if char != last_char:
stack.append((char, 1))
else:
if last_cnt + 1 < k:
stack[-1] = (last_
Throughout the twentieth century, a lot of countries were going through nationalism, political instability, war, and economic problems. When things got bad like that, governments and extremist groups would usually find someone to blame. Minority groups became easy targets. Over time, propaganda and violence were used to isolate these groups and eventually wipe them out. Genocides like the Armenian Genocide, the Holocaust, Rwanda, Bosnia, and Darfur all showed how fear and hatred can lead to organized
Lysogenic infection — Virus hides in host DNA as a prophage. Goes dormant until triggered.
Prokaryote — No true nucleus. DNA floats in nucleoid region. Bacteria are prokaryotes.
Cell wall — Made of peptidoglycan. Gives shape and protection. Bacteria have it, animal cells don't.
Nucleus — Membrane-bound DNA storage in eukaryotes.
Conjugation — Two bacteria connect using pili and share a plasmid. Spreads antibiotic resistance.
Antibiotic — Kills or stops bacteria.
A Pattern of Destruction: Genocide and the Eight Stages Model
Throughout the twentieth and twenty-first centuries, genocides did not happen overnight. In 1996, political scientist Gregory Stanton introduced the Eight Stages of Genocide, a framework that breaks down how genocide develops: Classification, Symbolization, Dehumanization, Organization, Polarization, Preparation, Extermination, and Denial. Looking at the Armenian, Holocaust, Cambodian, Rwandan, Bosnian, and Darfur genocides, it is clear
AOS = -b/2a Quadratic Formula = (-b root b^2-4ac)/2a
SEQUENCES Arithmetic = an = a1+d(n-1) Geometric = an = a1*r^(n-1) Compound annually = P(1+r)^t Quarterly = P(1+ r/n)^nt Continuously = Pe^rt Turn all percents into decimals for compounding ex: 1.8%-->0.018
Elimination = put one equation over the other and then make it so one of the variables cancels out
Substitution = sub one variable for the other
Discriminant = b^2-4ac if > 0 then 2 solution if < 0 then no solutions if = 0 then...
Contexte : 2e religion mondiale. Diversité : Arabes (~400M) et non-arabes (Afrique, Indonésie, Asie du S.-E.). Mahomet est le dernier prophète ; il a reçu le message final et complet d'Dieu consigné dans le Coran.
Racines Abrahamiques : Ibrahim (Abraham) fonde le monothéisme. Éprouvé par Dieu, il s'établit en Canaan. La sécheresse le pousse en Égypte où il épouse Agar (servante de sa femme). Naissance d'Ismaël, ancêtre des Arabes.
Récits
1. Judge: Judges keep trials fair, stay neutral, handle objections, and decide punishments. UK judges still wear wigs.
2.witness: speak in the witness box and must tell the truth. Lying under oath is a serious crime called perjury. In the US, defendants can refuse to testify.
3.prosecution: tries to prove the accused is guilty. In criminal cases, the state brings charges for serious crimes. In civil cases, a plaintiff sues for compensation. No one goes to jail in civil cases.
4.defendant: is
Listen to the recording "Computer Science Basics: Programming Languages". Choose the correct options to make true sentences Points: 3
operate differently from one another
with vehicles
web developer
Listen to the recording once again and complete the sentences. Points: 4
... and directions
... like desktop
... more complex graphics
Choose the correct options from the table to complete the sentences below. Points: 10
... unauthorised access
... from malware