Merge pull request youngyangyang04#2575 from KyDestroy/master

添加0053.替换数字.md PHP版本

Author: youngyangyang04

problems/kamacoder/0054.替换数字.md

@@ -362,10 +362,43 @@ main();
 
 ### Scala:
 
-
 ### PHP：
 
+```php
+<?php
+// 标准输入
+$s = trim(fgets(STDIN));
+$oldLen = strlen($s);
+$count = 0;
+for ($i = 0; $i < $oldLen; $i++) {
+    if (is_numeric($s[$i])) {
+      $count++;
+    }
+}
 
-### Rust:
+// 扩充字符串
+$s = str_pad($s, $oldLen + $count * 5);
+$newLen = strlen($s);
+while($oldLen >= 0) {
+    if (is_numeric($s[$oldLen])) {
+        $s[$newLen--] = 'r';
+        $s[$newLen--] = 'e';
+        $s[$newLen--] = 'b';
+        $s[$newLen--] = 'm';
+        $s[$newLen--] = 'u';
+        $s[$newLen--] = 'n';
+    } else {
+        $s[$newLen--] = $s[$oldLen];
+    }
+    $oldLen--;
+}
 
+echo $s;
+?>
+```
+
+
+
+
+### Rust:
 

problems/kamacoder/0055.右旋字符串.md

@@ -18,7 +18,7 @@
 ```
 2
 abcdefg 
-``` 
+```
 
 样例输出： 
 
@@ -355,10 +355,35 @@ function reverseStr(s, start, end) {
 
 ### PHP：
 
+```php
+<?php
+// 反转函数
+function reverse(&$s, $start, $end) {
+    for ($i = $start, $j = $end; $i < $j; $i++, $j--) {
+        $tmp = $s[$i];
+        $s[$i] = $s[$j];
+        $s[$j] = $tmp;
+    }
+}
+    
+// 标准输入：读取右旋转位数和字符串    
+$n = trim(fgets(STDIN));
+$s = trim(fgets(STDIN));
+// 字符串长度
+$len = strlen($s);
+// 先部分反转
+reverse($s, $len - $n, $len - 1);
+reverse($s, 0, $len - $n - 1);
+// 再整体反转
+reverse($s, 0, $len - 1);
+
+echo $s;
+?>
+```
+
 
 ### Scala:
 
 
 ### Rust:
 
-