# Camel case of a given sentence

• Difficulty Level : Easy
• Last Updated : 16 Jun, 2022

Given a sentence, task is to remove spaces from the sentence and rewrite in Camel case. It is a style of writing where we don’t have spaces and all words begin with capital letters.
Examples:

```Input  : I got intern at geeksforgeeks
Output : IGotInternAtGeeksforgeeks

Input :  Here comes the garden
Output : HereComesTheGarden```

Simple solution: First method is to traverse sentence and one by one remove spaces by moving subsequent characters one position back and changing case of first character to capital. It takes O(n*n) time.
Efficient solution : We traverse given string, while traversing we copy non space character to result and whenever we encounter space, we ignore it and change next letter to capital.
Below is code implementation

## C++

 `// CPP program to convert given sentence ` `/// to camel case. ` `#include ` `using` `namespace` `std; `   `// Function to remove spaces and convert ` `// into camel case ` `string convert(string s) ` `{ ` `    ``int` `n = s.length(); `   `    ``int` `res_ind = 0; `   `    ``for` `(``int` `i = 0; i < n; i++) { `   `        ``// check for spaces in the sentence ` `        ``if` `(s[i] == ``' '``) { `   `            ``// conversion into upper case ` `            ``s[i + 1] = ``toupper``(s[i + 1]); ` `            ``continue``; ` `        ``} `   `        ``// If not space, copy character ` `        ``else` `            ``s[res_ind++] = s[i];         ` `    ``} `   `    ``// return string to main ` `    ``return` `s.substr(0, res_ind); ` `} `   `// Driver program ` `int` `main() ` `{ ` `    ``string str = ``"I get intern at geeksforgeeks"``; ` `    ``cout << convert(str); ` `    ``return` `0; ` `} `

## Java

 `// Java program to convert given sentence` `/// to camel case.` `class` `GFG ` `{`   `    ``// Function to remove spaces and convert` `    ``// into camel case` `    ``static` `String convert(String s)` `    ``{`   `        ``// to count spaces` `        ``int` `cnt= ``0``;` `        ``int` `n = s.length();` `        ``char` `ch[] = s.toCharArray();` `        ``int` `res_ind = ``0``;`   `        ``for` `(``int` `i = ``0``; i < n; i++) ` `        ``{`   `            ``// check for spaces in the sentence` `            ``if` `(ch[i] == ``' '``)` `            ``{` `                ``cnt++;` `                ``// conversion into upper case` `                ``ch[i + ``1``] = Character.toUpperCase(ch[i + ``1``]);` `                ``continue``;` `            ``}`   `            ``// If not space, copy character ` `            ``else` `                ``ch[res_ind++] = ch[i]; ` `        ``}`   `        ``// new string will be reduced by the ` `        ``// size of spaces in the original string` `        ``return` `String.valueOf(ch, ``0``, n - cnt);` `    ``}`   `    ``// Driver code` `    ``public` `static` `void` `main(String args[])` `    ``{` `        ``String str = ``"I get intern at geeksforgeeks"``;` `        ``System.out.println(convert(str));` `    ``}` `}`   `// This code is contributed by gp6.`

## Python

 `# Python program to convert ` `# given sentence to camel case.`   `# Function to remove spaces ` `# and convert into camel case` `def` `convert(s):` `    ``if``(``len``(s) ``=``=` `0``):` `        ``return` `    ``s1 ``=` `''` `    ``s1 ``+``=` `s[``0``].upper()` `    ``for` `i ``in` `range``(``1``, ``len``(s)):` `        ``if` `(s[i] ``=``=` `' '``):` `            ``s1 ``+``=` `s[i ``+` `1``].upper()` `            ``i ``+``=` `1` `        ``elif``(s[i ``-` `1``] !``=` `' '``):` `            ``s1 ``+``=` `s[i] ` `    ``print``(s1)     ` `            `    `# Driver Code` `def` `main():` `    ``s ``=` `"I get intern at geeksforgeeks"` `    ``convert(s)` `    `  `if` `__name__``=``=``"__main__"``:` `    ``main() ` `    `  `# This code is contributed` `# prabhat kumar singh` `   `

## C#

 `// C# program to convert given sentence` `// to camel case.` `using` `System;` `    `  `class` `GFG ` `{`   `    ``// Function to remove spaces and convert` `    ``// into camel case` `    ``static` `void` `convert(String s)` `    ``{`   `        ``// to count spaces` `        ``int` `cnt= 0;` `        ``int` `n = s.Length;` `        ``char` `[]ch = s.ToCharArray();` `        ``int` `res_ind = 0;`   `        ``for` `(``int` `i = 0; i < n; i++) ` `        ``{`   `            ``// check for spaces in the sentence` `            ``if` `(ch[i] == ``' '``)` `            ``{` `                ``cnt++;` `                `  `                ``// conversion into upper case` `                ``ch[i + 1] = ``char``.ToUpper(ch[i + 1]);` `                ``continue``;` `            ``}`   `            ``// If not space, copy character ` `            ``else` `                ``ch[res_ind++] = ch[i]; ` `        ``}`   `        ``// new string will be reduced by the ` `        ``// size of spaces in the original string` `        ``for``(``int` `i = 0; i < n - cnt; i++)` `            ``Console.Write(ch[i]);` `    ``}`   `    ``// Driver code` `    ``public` `static` `void` `Main(String []args)` `    ``{` `        ``String str = ``"I get intern at geeksforgeeks"``;` `        ``convert(str);` `    ``}` `}`   `// This code is contributed by 29AjayKumar`

## Javascript

 ``

Output

`IGetInternAtGeeksforgeeks`

Time complexity : O(n)
Auxiliary Space : O(1)

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