Print last character of each word in a string
Last Updated :
25 Sep, 2022
Given string str, the task is to print the last character of each word in the string.
Examples:
Input: str = “Geeks for Geeks”
Output: s r s
Input: str = “computer applications”
Output: r s
Approach: Append a space i.e. ” “ at the end of the given string so that the last word in the string is also followed by a space just like all the other words in the string. Now start traversing the string character by character, and print every character which is followed by a space.
Below is the implementation of the above approach:
C++
#include <bits/stdc++.h>
using namespace std;
void printLastChar(string str)
{
str = str + " ";
for (int i = 1; i < str.length(); i++) {
if (str[i] == ' ')
cout << str[i - 1] << " ";
}
}
int main()
{
string str = "Geeks for Geeks";
printLastChar(str);
}
|
Java
class GFG {
static void printLastChar(String str)
{
str = str + " ";
for (int i = 1; i < str.length(); i++) {
if (str.charAt(i) == ' ')
System.out.print(str.charAt(i - 1) + " ");
}
}
public static void main(String s[])
{
String str = "Geeks for Geeks";
printLastChar(str);
}
}
|
Python3
def printLastChar(string):
string = string + " "
for i in range(len(string)):
if string[i] == ' ':
print(string[i - 1], end = " ")
string = "Geeks for Geeks"
printLastChar(string)
|
C#
using System;
class GFG
{
static void printLastChar(string str)
{
str = str + " ";
for (int i = 1; i < str.Length; i++)
{
if (str[i] == ' ')
Console.Write(str[i - 1] + " ");
}
}
public static void Main()
{
string str = "Geeks for Geeks";
printLastChar(str);
}
}
|
PHP
<?php
function printLastChar($str)
{
$str = $str . " ";
for ($i = 1; $i < strlen($str); $i++)
{
if (!strcmp($str[$i], ' '))
echo($str[$i - 1] . " ");
}
}
$str = "Geeks for Geeks";
printLastChar($str);
?>
|
Javascript
<script>
function printLastChar(str) {
str = str + " ";
for (var i = 1; i < str.length; i++) {
if (str[i] === " ")
document.write(str[i - 1] + " ");
}
}
var str = "Geeks for Geeks";
printLastChar(str);
</script>
|
Time complexity: O(n) where n is the length of the given string.
Auxiliary space: O(1)
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