完成字符串压缩

shengshijun · shengshijun · commit bf8a01ec7ff2 · 2015-02-02T14:53:37.000+08:00
bugfix
diff --git a/src/main/java/ssj/algorithm/string/StringUntil.java b/src/main/java/ssj/algorithm/string/StringUntil.java
@@ -130,6 +130,9 @@ public static String replaceSpace(String s) {
     }
 
     public static String compress(String str) {
+        if (str == null || str.isEmpty()) {
+            return str;
+        }
         StringBuilder sb = new StringBuilder(str.length());
         int cur = 0;
         while (cur < str.length()) {

Original file line number	Diff line number	Diff line change
`@@ -130,6 +130,9 @@ public static String replaceSpace(String s) {`
`130`	`130`	`}`
`131`	`131`
`132`	`132`	`public static String compress(String str) {`
	`133`	`+ if (str == null \|\| str.isEmpty()) {`
	`134`	`+ return str;`
	`135`	`+ }`
`133`	`136`	`StringBuilder sb = new StringBuilder(str.length());`
`134`	`137`	`int cur = 0;`
`135`	`138`	`while (cur < str.length()) {`