Dasturlash tilida satrlar bilan ishlash uchun qanday usullar mavjud?

• Sub-stringni chiqarish:
  • Boshlanish va tugash indekslariga ko‘ra.
  • Boshlanish indeksiga va uzunligiga ko‘ra.
  • Indeks bo‘yicha bitta belgi chiqarish.
• Qidirish va o‘rniga qo‘yish:
  • Sub-stringning birinchi/oxirgi holatini qidirish.
  • Sub-string mavjudligini tekshirish.
  • Barcha holatlarni o‘rniga qo‘yish.
  • Sub-stringni o‘chirish.
• Bo‘linish va birlashtirish:
  • Ajratuvchi yordamida satrni sub-satrlar massiviga bo‘lish.
  • Satrlar massivini ajratuvchi bilan bitta satrga birlashtirish.
• Katta-kichik harfga o‘zgartirish:
  • Katta harfga o‘zgartirish.
  • Kichik harfga o‘zgartirish.
• Trim (bo‘sh joylarni olib tashlash):
  • Satrning boshida va oxirida bo‘sh joylarni olib tashlash.
  • Faqat boshida.
  • Faqat oxirida.
• Formatlash:
  • Shablonlar yoki spetsifikatorlar yordamida satrlarni formatlash.
• Tekshiruvlar:
  • Bo‘sh yoki null ekanligini tekshirish.
  • Raqamli ekanligini tekshirish.
• Solishtirish:
  • Harf harf solishtirish (kattalik yoki kichiklikni hisobga olgan holda yoki olmasdan).

Turli tillardagi metodlar misollari:

# Python
my_string = "  Hello World! "

# Sub-stringni chiqarish
substring = my_string[2:7] # "Hello"
first_char = my_string[0] # " "

# Qidirish va o‘rniga qo‘yish
index = my_string.find("World") # 8
exists = "World" in my_string # True
new_string = my_string.replace("World", "Python") # "  Hello Python! "

# Bo‘lish va birlashtirish
parts = my_string.split(" ") # ['', '', 'Hello', 'World!', '']
joined = "-".join(["one", "two", "three"]) # "one-two-three"

# Katta-kichik harfga o‘zgartirish
upper_case = my_string.upper() # "  HELLO WORLD! "
lower_case = my_string.lower() # "  hello world! "

# Trim
trimmed = my_string.strip() # "Hello World!"

// Java
String myString = "  Hello World! ";

// Sub-stringni chiqarish
String substring = myString.substring(2, 7); // "Hello"
char firstChar = myString.charAt(0); // ' '

// Qidirish va o‘rniga qo‘yish
int index = myString.indexOf("World"); // 8
boolean exists = myString.contains("World"); // true
String newString = myString.replace("World", "Java"); // "  Hello Java! "

// Bo‘lish va birlashtirish
String[] parts = myString.split(" "); // ["", "", "Hello", "World!", ""]
String joined = String.join("-", "one", "two", "three"); // "one-two-three"

// Katta-kichik harfga o‘zgartirish
String upperCase = myString.toUpperCase(); // "  HELLO WORLD! "
String lowerCase = myString.toLowerCase(); // "  hello world! "

// Trim
String trimmed = myString.trim(); // "Hello World!"

// Javascript
const myString = "  Hello World! ";

// Sub-stringni chiqarish
const substring = myString.substring(2, 7); // "Hello"
const charAtIndex = myString.charAt(0); // " "

// Qidirish va o‘rniga qo‘yish
const index = myString.indexOf("World"); // 8
const exists = myString.includes("World"); // true
const newString = myString.replace("World", "JavaScript"); // "  Hello JavaScript! "

// Bo‘lish va birlashtirish
const parts = myString.split(" "); // ["", "", "Hello", "World!", ""]
const joined = ["one", "two", "three"].join("-"); // "one-two-three"

// Katta-kichik harfga o‘zgartirish
const upperCase = myString.toUpperCase(); // "  HELLO WORLD! "
const lowerCase = myString.toLowerCase(); // "  hello world! "

// Trim
const trimmed = myString.trim(); // "Hello World!"

Metodlarning aniq to‘plami va sintaksisi dasturlash tiliga bog‘liq.