# Print all strings of maximum length from an array of strings

• Difficulty Level : Easy
• Last Updated : 22 Jun, 2021

Given an array of strings arr[], the task is to print all the strings of maximum length from the given array.

Example:

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Input: arr[] = {“aba”, “aa”, “ad”, “vcd”, “aba”}
Output: aba vcd aba
Explanation:
Maximum length among all the strings from the given array is 3.
The strings having length equal to 3 from the array are “aba”, “vcd”, “aba”.

Input: arr[] = {“abb”, “abcd”, “guw”, “v”}
Output: abcd
Explanation:
Maximum length among all the strings from the given array is 4.
The string having length equal to 4 from the array is “abcd”.

Approach: Follow the steps below to solve the problem:

1. Traverse the given array of strings. Calculate the maximum length among all the strings from the array and store it in a variable, say len.
2. Now, traverse the array of string again and print those strings from the array having a length equal to len.

Below is the implementation of the above approach:

## C++

 `// C++ program to implement``// the above approach` `#include ``using` `namespace` `std;` `// Function to find the length``// of the longest string from``// the given array of strings``int` `maxLength(vector arr)``{``    ``int` `len = INT_MIN;``    ``int` `N = arr.size();` `    ``// Traverse the array``    ``for` `(``int` `i = 0; i < N; i++) {` `        ``// Stores the length``        ``// of current string``        ``int` `l = arr[i].size();` `        ``// Update maximum length``        ``if` `(len < l) {` `            ``len = l;``        ``}``    ``}` `    ``// Return the maximum length``    ``return` `len;``}` `// Function to print the``// longest strings from the array``void` `maxStrings(vector arr, ``int` `len)``{``    ``int` `N = arr.size();``    ``vector ans;` `    ``// Find the strings having length``    ``// equals to len``    ``for` `(``int` `i = 0; i < N; i++) {``        ``if` `(len == arr[i].size()) {``            ``ans.push_back(arr[i]);``        ``}``    ``}` `    ``// Print the resultant``    ``// vector of strings``    ``for` `(``int` `i = 0; i < ans.size(); i++) {``        ``cout << ans[i] << ``" "``;``    ``}``}` `// Function to print all the``// longest strings from the array``void` `printStrings(vector& arr)``{``    ``// Find the length of longest string``    ``int` `max = maxLength(arr);` `    ``// Find and print all the strings``    ``// having length equals to max``    ``maxStrings(arr, max);``}` `// Driver Code``int` `main()``{``    ``vector arr``        ``= { ``"aba"``, ``"aa"``, ``"ad"``, ``"vcd"``, ``"aba"` `};``    ``printStrings(arr);` `    ``return` `0;``}`

## Java

 `// Java program to implement``// the above approach``import` `java.util.*;` `class` `GFG{` `// Function to find the length``// of the longest String from``// the given array of Strings``static` `int` `maxLength(String []arr)``{``    ``int` `len = Integer.MIN_VALUE;``    ``int` `N = arr.length;` `    ``// Traverse the array``    ``for``(``int` `i = ``0``; i < N; i++)``    ``{``        ` `        ``// Stores the length``        ``// of current String``        ``int` `l = arr[i].length();` `        ``// Update maximum length``        ``if` `(len < l)``        ``{``            ``len = l;``        ``}``    ``}` `    ``// Return the maximum length``    ``return` `len;``}` `// Function to print the``// longest Strings from the array``static` `void` `maxStrings(String []arr, ``int` `len)``{``    ``int` `N = arr.length;``    ``Vector ans = ``new` `Vector();` `    ``// Find the Strings having length``    ``// equals to len``    ``for``(``int` `i = ``0``; i < N; i++)``    ``{``        ``if` `(len == arr[i].length())``        ``{``            ``ans.add(arr[i]);``        ``}``    ``}` `    ``// Print the resultant``    ``// vector of Strings``    ``for``(``int` `i = ``0``; i < ans.size(); i++)``    ``{``        ``System.out.print(ans.get(i) + ``" "``);``    ``}``}` `// Function to print all the``// longest Strings from the array``static` `void` `printStrings(String [] arr)``{``    ` `    ``// Find the length of longest String``    ``int` `max = maxLength(arr);` `    ``// Find and print all the Strings``    ``// having length equals to max``    ``maxStrings(arr, max);``}` `// Driver Code``public` `static` `void` `main(String[] args)``{``    ``String []arr = { ``"aba"``, ``"aa"``, ``"ad"``,``                     ``"vcd"``, ``"aba"` `};``                     ` `    ``printStrings(arr);``}``}` `// This code is contributed by Amit Katiyar`

## Python3

 `# Python3 program to implement``# the above approach``import` `sys` `# Function to find the length``# of the longest string from``# the given array of strings``def` `maxLength(arr):` `    ``lenn ``=` `-``sys.maxsize ``-` `1``    ``N ``=` `len``(arr)` `    ``# Traverse the array``    ``for` `i ``in` `range``(N):` `        ``# Stores the length``        ``# of current string``        ``l ``=` `len``(arr[i])` `        ``# Update maximum length``        ``if` `(lenn < l):``            ``lenn ``=` `l` `    ``# Return the maximum length``    ``return` `lenn` `# Function to print the``# longest strings from the array``def` `maxStrings(arr, lenn):` `    ``N ``=` `len``(arr)``    ``ans ``=` `[]``    ` `    ``# Find the strings having length``    ``# equals to lenn``    ``for` `i ``in` `range``(N):``        ``if` `(lenn ``=``=` `len``(arr[i])):``            ``ans.append(arr[i])` `    ``# Print the resultant``    ``# vector of strings``    ``for` `i ``in` `range``(``len``(ans)):``        ``print``(ans[i], end ``=` `" "``)` `# Function to print all the``# longest strings from the array``def` `printStrings(arr):` `    ``# Find the length of longest string``    ``max` `=` `maxLength(arr)` `    ``# Find and print all the strings``    ``# having length equals to max``    ``maxStrings(arr, ``max``)` `# Driver Code``if` `__name__ ``=``=` `'__main__'``:``    ` `    ``arr ``=` `[ ``"aba"``, ``"aa"``, ``"ad"``,``            ``"vcd"``, ``"aba"` `]``    ` `    ``printStrings(arr)` `# This code is contributed by mohit kumar 29`

## C#

 `// C# program to implement``// the above approach``using` `System;``using` `System.Collections.Generic;``class` `GFG{` `// Function to find the length``// of the longest String from``// the given array of Strings``static` `int` `maxLength(String []arr)``{``    ``int` `len = ``int``.MinValue;``    ``int` `N = arr.Length;` `    ``// Traverse the array``    ``for``(``int` `i = 0; i < N; i++)``    ``{       ``        ``// Stores the length``        ``// of current String``        ``int` `l = arr[i].Length;` `        ``// Update maximum length``        ``if` `(len < l)``        ``{``            ``len = l;``        ``}``    ``}` `    ``// Return the maximum length``    ``return` `len;``}` `// Function to print the``// longest Strings from the array``static` `void` `maxStrings(String []arr,``                       ``int` `len)``{``    ``int` `N = arr.Length;``    ``List ans = ``new` `List();` `    ``// Find the Strings having length``    ``// equals to len``    ``for``(``int` `i = 0; i < N; i++)``    ``{``        ``if` `(len == arr[i].Length)``        ``{``            ``ans.Add(arr[i]);``        ``}``    ``}` `    ``// Print the resultant``    ``// vector of Strings``    ``for``(``int` `i = 0; i < ans.Count; i++)``    ``{``        ``Console.Write(ans[i] + ``" "``);``    ``}``}` `// Function to print all the``// longest Strings from the array``static` `void` `printStrings(String [] arr)``{   ``    ``// Find the length of longest String``    ``int` `max = maxLength(arr);` `    ``// Find and print all the Strings``    ``// having length equals to max``    ``maxStrings(arr, max);``}` `// Driver Code``public` `static` `void` `Main(String[] args)``{``    ``String []arr = {``"aba"``, ``"aa"``, ``"ad"``,``                    ``"vcd"``, ``"aba"``};                    ``    ``printStrings(arr);``}``}` `// This code is contributed by Rajput-Ji`

## Javascript

 ``
Output:
`aba vcd aba`

Time Complexity: O(N)
Auxiliary Space: O(N)

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