Vấn đề viết hoa một chuỗi khá phổ biến và đã được thảo luận nhiều lần. Nhưng đôi khi, chúng ta có thể gặp một vấn đề như thế này, trong đó chúng ta cần chuyển đổi ký tự đầu tiên của chuỗi thành chữ thường. Hãy để chúng tôi thảo luận về những cách nhất định trong đó điều này có thể được thực hiện.
Phương pháp số 1. Sử dụng cắt chuỗi + Lower() Tác vụ này có thể dễ dàng được thực hiện bằng cách sử dụng phương thức Lower để viết thường các ký tự được cung cấp cho nó và cắt có thể được sử dụng để thêm chuỗi còn lại sau ký tự đầu tiên viết thường.
Python3
# Python3 code to demonstrate working of
# Lowercase first character of String
# Using lower() + string slicing
# initializing string
test_strThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks2
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______5 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8
# Using lower() + string slicing
# Lowercase first character of String
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3_______0_______4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks5The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks9
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______3 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6
đầu ra. The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks
Thời gian phức tạp. Trên)
Không gian phụ trợ. Trên)
Phương pháp #2. Sử dụng lambda + cắt chuỗi + Lower() Công thức của hàm lambda phải được thêm vào nếu chúng ta cần thực hiện tác vụ xử lý cả giá trị Không có giá trị hoặc chuỗi rỗng và điều này trở nên cần thiết để xử lý các trường hợp cạnh.
Python3
# Python3 code to demonstrate working of
# Lowercase first character of String
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks9
# initializing string
test_strThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks2
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______5 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks9
# Lowercase first character of String
# Python3 code to demonstrate working of3 # Python3 code to demonstrate working of4# Python3 code to demonstrate working of5 # Python3 code to demonstrate working of6The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks5_______0_______6
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks9# Lowercase first character of String3 test_str# Lowercase first character of String5 # Lowercase first character of String6
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______3 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7# Using lower() + string slicing3
đầu ra. The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks
Thời gian phức tạp. Trên)
Không gian phụ trợ. Trên)
Phương pháp #3. Sử dụng phương thức thay thế () mà không cần cắt
Python3
# Python3 code to demonstrate working of
# Lowercase first character of String
# initializing string
test_strThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks2
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______5 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8
test_strThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0_______139_______9The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4test_str1The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4test_str3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8_______140_______5
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______3 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8
Đầu raThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks
Thời gian phức tạp. Trên)
Không gian phụ trợ. Trên)
Phương pháp #4. Sử dụng phương thức cắt lát và chỉ mục ()
Python3
# Python3 code to demonstrate working of
# Lowercase first character of String
# initializing string
test_strThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks2
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______5 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks16_______0_______0The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks18
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks19_______0_______0The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks21
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks24_______0_______4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks26The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8_______0_______9
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______3 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6
Đầu raThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks
Thời gian phức tạp. Trên)
Không gian phụ trợ. Trên)
Phương pháp #5. Sử dụng các hàm ord(),chr()
Python3
# Python3 code to demonstrate working of
# Lowercase first character of String
# initializing string
test_strThe original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks1
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks2
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4_______0_______5 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks7The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks8
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks51The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks53
# Lowercase first character of String3The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks56The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks57The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks59The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks56The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks63The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks64
The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks65The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks51The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks0 The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks68The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks56The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks57The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks4The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks73The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks6The original string is : GeeksforGeeks The string after lowercasing initial character : geeksforGeeks75test_str5