/
rmdup.go
39 lines (34 loc) · 1003 Bytes
/
rmdup.go
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// Copyright (c) 2019 Matúš Mrekaj.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License
package linkedlists
// RemoveDuplicates removes duplicate nodes
// from a linked list in O(N) time complexity
// O(1) space complexity.
func RemoveDuplicates(root *Node) {
if root == nil {
return
}
start := root
end := root.Next
for end != nil {
if start.Data.(int) == end.Data.(int) {
end = end.Next
} else {
start.Next = end
start = end
end = end.Next
}
}
start.Next = end
}