Remove a given word from a string using C++
在本文中,我们将解决从给定字符串中删除给定单词的问题。例如 -
Input : str = “remove a given word ”, word = “ remove ” Output : “ a given word ” Input : str = “ god is everywhere ”, word = “ is ” Output : “ god everywhere ”
寻找解决方案的方法
例如,我们可以使用一种简单的方法从字符串中删除单词。
- 首先,将二维矩阵形式的给定字符串,其中每个单词存储在每一行中。
- 在矩阵中查找该单词,并将该行替换为该单词所在的空字符。
- 最后,打印重新排序的字符串。
示例
#include <bits/stdc++.h> using namespace std; int remove_word (string str, char word[]) { char matrix[10][30]; int i = 0, j = 0, k = 0, len1 = 0, len2 = 0; // putting each word of string into the rows of the 2-D matrix. for (i = 0; str[i] != '\0'; i++) { if (str[i] == ' ') { matrix[k][j] = '\0'; k++; j = 0; }else{ matrix[k][j] = str[i]; j++; } } // looking for the word in a given string and putting a null character when the word is found. matrix[k][j] = '\0'; j = 0; for (i = 0; i < k + 1; i++) { if (strcmp (matrix[i], word) == 0) { matrix[i][j] = '\0'; } } j = 0; // printing the reordered string. for (i = 0; i < k + 1; i++){ if (matrix[i][j] == '\0') continue; else cout << matrix[i] << " "; } cout << "\n"; } int main () { char str1[] = "remove a given word", word1[] = "remove"; char str2[] = "god is everywhere", word2[]="is"; // calling a function to remove a word from a string and print it. remove_word (str1, word1); remove_word (str2, word2); return 0; }
输出
a given word god everywhere
上述代码的解释
- 用一些值初始化字符串和数组,并调用函数来删除给定的单词。
- 将每个单词放入二维矩阵的每一行中的字符串,使用循环存储每个块中的每个字符,直到找到空格。
- 使用 strcmp() 函数将字符串与单词进行比较,并将 null 值放入其中的行中找到单词。
- 最后,通过打印矩阵的每一行来打印字符串。
结论
本文讨论了删除给定单词来自字符串,我们通过将字符串存储在二维矩阵中然后用空值替换该单词来解决问题。我们使用 C++ 代码解决了这个问题。但是,我们可以使用任何其他语言(例如 C、Java、Python 等)解决相同的问题。希望本文对您有所帮助。
The above is the detailed content of Remove a given word from a string using C++. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



C language data structure: The data representation of the tree and graph is a hierarchical data structure consisting of nodes. Each node contains a data element and a pointer to its child nodes. The binary tree is a special type of tree. Each node has at most two child nodes. The data represents structTreeNode{intdata;structTreeNode*left;structTreeNode*right;}; Operation creates a tree traversal tree (predecision, in-order, and later order) search tree insertion node deletes node graph is a collection of data structures, where elements are vertices, and they can be connected together through edges with right or unrighted data representing neighbors.

The truth about file operation problems: file opening failed: insufficient permissions, wrong paths, and file occupied. Data writing failed: the buffer is full, the file is not writable, and the disk space is insufficient. Other FAQs: slow file traversal, incorrect text file encoding, and binary file reading errors.

How to output a countdown in C? Answer: Use loop statements. Steps: 1. Define the variable n and store the countdown number to output; 2. Use the while loop to continuously print n until n is less than 1; 3. In the loop body, print out the value of n; 4. At the end of the loop, subtract n by 1 to output the next smaller reciprocal.

C language multithreading programming guide: Creating threads: Use the pthread_create() function to specify thread ID, properties, and thread functions. Thread synchronization: Prevent data competition through mutexes, semaphores, and conditional variables. Practical case: Use multi-threading to calculate the Fibonacci number, assign tasks to multiple threads and synchronize the results. Troubleshooting: Solve problems such as program crashes, thread stop responses, and performance bottlenecks.

Algorithms are the set of instructions to solve problems, and their execution speed and memory usage vary. In programming, many algorithms are based on data search and sorting. This article will introduce several data retrieval and sorting algorithms. Linear search assumes that there is an array [20,500,10,5,100,1,50] and needs to find the number 50. The linear search algorithm checks each element in the array one by one until the target value is found or the complete array is traversed. The algorithm flowchart is as follows: The pseudo-code for linear search is as follows: Check each element: If the target value is found: Return true Return false C language implementation: #include#includeintmain(void){i

C Language Data Structure: Overview of the Key Role of Data Structure in Artificial Intelligence In the field of artificial intelligence, data structures are crucial to processing large amounts of data. Data structures provide an effective way to organize and manage data, optimize algorithms and improve program efficiency. Common data structures Commonly used data structures in C language include: arrays: a set of consecutively stored data items with the same type. Structure: A data type that organizes different types of data together and gives them a name. Linked List: A linear data structure in which data items are connected together by pointers. Stack: Data structure that follows the last-in first-out (LIFO) principle. Queue: Data structure that follows the first-in first-out (FIFO) principle. Practical case: Adjacent table in graph theory is artificial intelligence

Troubleshooting Tips for C language processing files When processing files in C language, you may encounter various problems. The following are common problems and corresponding solutions: Problem 1: Cannot open the file code: FILE*fp=fopen("myfile.txt","r");if(fp==NULL){//File opening failed} Reason: File path error File does not exist without file read permission Solution: Check the file path to ensure that the file has check file permission problem 2: File reading failed code: charbuffer[100];size_tread_bytes=fread(buffer,1,siz

C language functions are reusable code blocks, receive parameters for processing, and return results. It is similar to the Swiss Army Knife, powerful and requires careful use. Functions include elements such as defining formats, parameters, return values, and function bodies. Advanced usage includes function pointers, recursive functions, and callback functions. Common errors are type mismatch and forgetting to declare prototypes. Debugging skills include printing variables and using a debugger. Performance optimization uses inline functions. Function design should follow the principle of single responsibility. Proficiency in C language functions can significantly improve programming efficiency and code quality.
