Add slice DeQueue (#31)

* Add slice DeQueue * Update slice DeQueue
chenquan · Mar 6, 2021 · d0f70ed · d0f70ed
1 parent bff2a19
commit d0f70ed
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Showing 4 changed files with 454 additions and 5 deletions.
diff --git a/backend/collection/deque.go b/backend/collection/deque.go
@@ -17,8 +17,8 @@
 
 package collection
 
-// DeQue 双端队列
-type DeQue interface {
+// DeQueue 双端队列
+type DeQueue interface {
 	// 实现队列接口
 	Queue
 	AddFirst(e Element) error

diff --git a/errs/err.go b/errs/err.go
@@ -22,9 +22,11 @@ import "errors"
 
 var (
 	//NotFound        = errors.New("not found")
-	IndexOutOfBound = errors.New("index out of bound")
-	NoSuchElement   = errors.New("no such element")
-	IllegalState    = errors.New("illegal state")
+	IndexOutOfBound        = errors.New("index out of bound")
+	NoSuchElement          = errors.New("no such element")
+	IllegalState           = errors.New("illegal state")
+	NilPointer             = errors.New("nil pointer")
+	ConcurrentModification = errors.New("concurrent Modification")
 )
 
 // indexOutOfBoundsException 实现 errs 接口