打印字符串中每个单词的第一个和最后一个字符
原文:https://www . geesforgeks . org/print-字符串中每个单词的第一个和最后一个字符/
给定一个字符串，任务是打印字符串中每个单词的第一个和最后一个字符。 例:
Input: Geeks for geeks
Output: Gs fr gs
Input: Computer applications
Output: Cr as
接近T2】
- 从第一个字母到最后一个字母循环。
- 打印字符串的第一个和最后一个字母。
- 如果字符串中有空格，则打印位于空格前和空格后的字符。
下面是上述方法的实现。
C++
// CPP program to print
// the first and last character
// of each word in a String'
#include<bits/stdc++.h>
using namespace std;
// Function to print the first
// and last character of each word.
void FirstAndLast(string str)
{
int i;
for (i = 0; i < str.length(); i++)
{
// If it is the first word
// of the string then print it.
if (i == 0)
cout<<str[i];
// If it is the last word of the string
// then also print it.
if (i == str.length() - 1)
cout<<str[i];
// If there is a space
// print the successor and predecessor
// to space.
if (str[i] == ' ')
{
cout<<str[i-1]<<" "<<str[i+1];
}
}
}
// Driver code
int main()
{
string str = "Geeks for Geeks";
FirstAndLast(str);
}
// This code is contributed by
// Surendra_Gangwar
Java 语言(一种计算机语言，尤用于创建网站)
// Java program to print
// the first and last character
// of each word in a String
class GFG {
// Function to print the first
// and last character of each word.
static void FirstAndLast(String str)
{
int i;
for (i = 0; i < str.length(); i++) {
// If it is the first word
// of the string then print it.
if (i == 0)
System.out.print(str.charAt(i));
// If it is the last word of the string
// then also print it.
if (i == str.length() - 1)
System.out.print(str.charAt(i));
// If there is a space
// print the successor and predecessor
// to space.
if (str.charAt(i) == ' ') {
System.out.print(str.charAt(i - 1)
+ " "
+ str.charAt(i + 1));
}
}
}
// Driver code
public static void main(String args[])
{
String str = "Geeks for Geeks";
FirstAndLast(str);
}
}
Python 3
# Python3 program to print
# the first and last character
# of each word in a String'
# Function to print the first
# and last character of each word.
def FirstAndLast(string):
for i in range(len(string)):
# If it is the first word
# of the string then print it.
if i == 0:
print(string[i], end = "")
# If it is the last word of the string
# then also print it.
if i == len(string) - 1:
print(string[i], end = "")
# If there is a space
# print the successor and predecessor
# to space.
if string[i] == " ":
print(string[i - 1],
string[i + 1], end = "")
# Driver code
if __name__ == "__main__":
string = "Geeks for Geeks"
FirstAndLast(string)
# This code is contributed by
# sanjeev2552
C
// C# program to print
// the first and last character
// of each word in a String
using System;
class GFG
{
// Function to print the first
// and last character of each word.
static void FirstAndLast(string str)
{
int i;
for (i = 0; i < str.Length; i++)
{
// If it is the first word
// of the string then print it.
if (i == 0)
Console.Write(str[i]);
// If it is the last word of the string
// then also print it.
if (i == str.Length - 1)
Console.Write(str[i]);
// If there is a space
// print the successor and predecessor
// to space.
if (str[i] == ' ')
{
Console.Write(str[i - 1]
+ " "
+ str[i + 1]);
}
}
}
// Driver code
public static void Main()
{
string str = "Geeks for Geeks";
FirstAndLast(str);
}
}
// This code is contributed by Ryuga
java 描述语言
<script>
// JavaScript program to print
// the first and last character
// of each word in a String'
// Function to print the first
// and last character of each word.
function FirstAndLast(str)
{
for (var i = 0; i < str.length; i++)
{
// If it is the first word
// of the string then print it.
if (i == 0)
document.write(str[i]);
// If it is the last word of the string
// then also print it.
if (i == str.length - 1)
document.write(str[i]);
// If there is a space
// print the successor and predecessor
// to space.
if (str[i] === " ") {
document.write(str[i - 1] + " " + str[i + 1]);
}
}
}
// Driver code
var str = "Geeks for Geeks";
FirstAndLast(str);
</script>
Output:
Gs fr Gs
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