Created
September 28, 2021 14:52
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Given a string str consisting of letters only and an integer n, the task is to replace every character of the given string by a character which is n times more than it. If the letter exceeds ‘z’, then start checking from ‘a’ in a cyclic manner. Examples: Input: str = “abc”, n = 2 Output: cde a is moved by 2 times which results in character c b i…
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| <?php | |
| // PHP program to move every character | |
| // n times ahead in a given string | |
| // Function to move string character | |
| function encode($s, $n) | |
| { | |
| // changed string | |
| $newS = ""; | |
| // iterate for every characters | |
| for($i = 0; $i < strlen($s); ++$i) | |
| { | |
| // ASCII value | |
| $val = ord($s[$i]); | |
| // store the duplicate | |
| $dup = $n; | |
| // if k-th ahead character exceed 'z' | |
| if($val + $n > 122) | |
| { | |
| $n -= (122 - $val); | |
| $k = $n % 26; | |
| $newS = $newS.chr(96 + $n); | |
| } | |
| else | |
| $newS = $newS.chr($val + $n); | |
| $n = $dup; | |
| } | |
| // print the new string | |
| echo $newS; | |
| } | |
| $str = "abc"; | |
| $n = 28; | |
| // function call | |
| encode($str, $k); | |
| ?> |
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