Merge branch 'master' of github.com:qiwsir/algorithm

Author: qiwsir

string_to_hump.md

@@ -29,6 +29,28 @@
 
 ##欢迎补充其它语言的解决方法
 
+###racket解决方法 (racket 5.2.1)
+
+```racket
+#lang racket
+
+; 定义字符串转换函数 train-to-camel
+(define (train-to-camel train-str separator-char)
+  (let
+    [(splited-str (regexp-split separator-char train-str))]      ; 把原始字符串用 '-' 分成多个单独的单词
+    (string-append
+      (first splited-str)
+      (apply
+        string-append
+        (map
+          string-titlecase
+          (rest splited-str))))))
+
+; 调用字符串转换函数 train-to-camel
+(train-to-camel "this-is-a-var" "-")  ; 正常运行的情况下, 应输出 "thisIsAVar"
+
+```
+
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 ###联系我：老齐 qiwsir#gmail.com (# to @)