连接字符串的后缀
原文:https://www . geesforgeks . org/concatenate-后缀 of-a-string/
给定字符串 str 的任务是如下展开字符串: 如果字符串为 abcd ，则得到的字符串将是级联形式的 d 、 cd 、 bcd 和 abcd ，即 dcdbcdabcd 。我们基本上需要连接所有的后缀。
示例:
输入:str = " geeks " T3】输出: sksekseeksgeeks
输入水 输出水
简单方法:
- 以相反的顺序遍历字符串，即从最后一个索引到第一个索引。
- 打印从当前索引位置到字符串末尾的子字符串。
下面是上述方法的实现:
C++
// C++ implementation of the approach
#include <bits/stdc++.h>
using namespace std;
// Function to print the expansion of the string
void printExpansion(string str)
{
int size = 0;
for (int i = str.length() - 1; i >= 0; i--) {
// Take sub-string from i to n-1
string subStr = str.substr(i, ++size);
// Print the sub-string
cout << subStr;
}
}
// Driver code
int main()
{
string str = "geeks";
printExpansion(str);
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java implementation of the approach
public class GFG {
// Function to print the expansion of the string
static void printExpansion(String str)
{
for (int i = str.length() - 1; i >= 0; i--) {
// Take sub-string from i to n-1
String subStr = str.substring(i);
// Print the sub-string
System.out.print(subStr);
}
}
// Driver code
public static void main(String args[])
{
String str = "geeks";
printExpansion(str);
}
// This code is contributed by Ryuga
}
Python 3
# Python3 implementation of the approach
# Function to print the expansion of the string
def printExpansion(str):
for i in range(len(str)-1, -1, -1):
# Take sub-string from i to n-1
for j in range(i, len(str)):
print(str[j], end ="")
# Driver code
str = "geeks"
printExpansion(str)
C
// C# implementation of the approach
using System;
class GFG {
// Function to print the expansion of the string
static void printExpansion(String str)
{
for (int i = (int)str.Length - 1; i >= 0; i--) {
// Take sub-string from i to n-1
String subStr = str.Substring(i);
// Print the sub-string
Console.Write(subStr);
}
}
// Driver code
static public void Main(String []args)
{
String str = "geeks";
printExpansion(str);
}
}
// This code is contributed by Arnab Kundu
java 描述语言
<script>
// Javascript implementation of the approach
// Function to print the expansion of the string
function printExpansion(str)
{
var size = 0;
for (var i = str.length - 1; i >= 0; i--) {
// Take sub-string from i to n-1
var subStr = str.substring(i, i + ++size);
// Print the sub-string
document.write( subStr);
}
}
// Driver code
var str = "geeks";
printExpansion(str);
</script>
Output:
sksekseeksgeeks
高效方法: 维护后缀字符串(最初为空)。继续从末尾遍历并继续追加当前字符。
C++
// C++ implementation of the approach
#include <bits/stdc++.h>
using namespace std;
// Function to print the expansion of the string
void printExpansion(string str)
{
string suff = "";
for (int i = str.length() - 1; i >= 0; i--) {
// Take sub-string from i to n-1
suff = suff + str[i];
// Print the sub-string
cout << suff;
}
}
// Driver code
int main()
{
string str = "geeks";
printExpansion(str);
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java implementation of the approach
import java.util.*;
class solution
{
// Function to print the expansion of the string
static void printExpansion(String str)
{
String suff = "";
for (int i = str.length() - 1; i >= 0; i--) {
// Take sub-string from i to n-1
suff = suff + str.charAt(i);
// Print the sub-string
System.out.print(suff);
}
}
// Driver code
public static void main(String args[])
{
String str = "geeks";
printExpansion(str);
}
}
Python 3
# Python3 implementation of the approach
# Function to print the expansion
# of the string
def printExpansion( str):
suff = ""
for i in range (len (str) - 1, -1, -1) :
# Take sub-string from i to n-1
suff = suff + str[i]
# Print the sub-string
print (suff, end = "")
# Driver code
if __name__ == "__main__":
str = "geeks"
printExpansion(str)
# This code is contributed by ita_c
C
// C# Implementation of the above approach
using System;
class GFG
{
// Function to print
// the expansion of the string
static void printExpansion(String str)
{
String suff = "";
for (int i = str.Length - 1;
i >= 0; i--)
{
// Take sub-string from i to n-1
suff = suff + str[i];
// Print the sub-string
Console.Write(suff);
}
}
// Driver code
public static void Main(String []args)
{
String str = "geeks";
printExpansion(str);
}
}
// This code is contributed by PrinciRaj1992
java 描述语言
<script>
// Javascript implementation of the approach
// Function to print the expansion of the string
function printExpansion(str)
{
var suff = "";
for (var i = str.length - 1; i >= 0; i--) {
// Take sub-string from i to n-1
suff = suff + str[i];
// Print the sub-string
document.write( suff);
}
}
// Driver code
var str = "geeks";
printExpansion(str);
// This code is contributed by rrrtnx.
</script>
Output:
sskskeskeeskeeg
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