From 682ecbb039d25cc443c23c3c135ac0c87fb72eb9 Mon Sep 17 00:00:00 2001 From: leeeeeelee Date: Thu, 6 Dec 2018 23:10:05 +0900 Subject: [PATCH 1/6] Red Black Tree --- .../com/github/pedrovgs/problem81/RBT.java | 184 ++++++++++++++++++ .../github/pedrovgs/problem81/TestRBT.java | 5 + 2 files changed, 189 insertions(+) create mode 100644 src/main/java/com/github/pedrovgs/problem81/RBT.java create mode 100644 src/test/java/com/github/pedrovgs/problem81/TestRBT.java diff --git a/src/main/java/com/github/pedrovgs/problem81/RBT.java b/src/main/java/com/github/pedrovgs/problem81/RBT.java new file mode 100644 index 00000000..551b9a45 --- /dev/null +++ b/src/main/java/com/github/pedrovgs/problem81/RBT.java @@ -0,0 +1,184 @@ +package upload; + +import java.util.ArrayList; + +public class RBT { + + int count=0; + private final boolean RED = false; + private final boolean BLACK = true; + + private final Node NIL = new Node(-999); + + public Node root = NIL; + + public class Node { + int data; + boolean color=BLACK; + Node left, right, parent; + + Node(int data) { + this.data = data; + this.left=NIL; + this.right=NIL; + this.parent=NIL; + } + } + + public void insert(int n) { + Node node = new Node(n); + Node temp = root; + if (root == NIL) { + root = node; + node.color = BLACK; + node.parent = NIL; + } else { + node.color = RED; + while (true) { + if(n>temp.data) { + if(temp.right!=NIL) { + temp = temp.right; + }else { + temp.right = node; + node.parent = temp; + break; + } + }else { + if(temp.left!=NIL) { + temp = temp.left; + }else { + temp.left = node; + node.parent = temp; + break; + } + } + } + makeRBT(node); + } + } + + private void makeRBT(Node node) { + while (node.parent.color == RED) { + Node s = NIL; + if (node.parent == node.parent.parent.right) { + s = node.parent.parent.left; + if (s != NIL && s.color == RED) {//case1 + s.color = BLACK; + node.parent.parent.color = RED; + node.parent.color=BLACK; + node = node.parent.parent; + continue; + } + if (node == node.parent.left) {//case2-1 + node = node.parent; + rotateRight(node);//->case2-2 + }//case2-2 + node.parent.color = BLACK; + node.parent.parent.color = RED; + rotateLeft(node.parent.parent); + } else { + s = node.parent.parent.right; + if (s != NIL && s.color == RED) {//case1 : parent and s is all red + s.color = BLACK; + node.parent.color=BLACK; + node.parent.parent.color = RED; + node = node.parent.parent; + continue; + } + if (node == node.parent.right) {//case2-1 + node = node.parent; + rotateLeft(node);//->case2-2 + }//case2-2 + node.parent.color = BLACK; + node.parent.parent.color = RED; + rotateRight(node.parent.parent); + } + } + root.color = BLACK;//root always black + } + + private void rotateLeft(Node node) { + if (node.parent == NIL) { + Node right = root.right; + root.right = right.left; + right.left.parent = root; + root.parent = right; + right.left = root; + right.parent = NIL; + root = right; + } else { + if (node == node.parent.right) { + node.parent.right = node.right; + } else { + node.parent.left = node.right; + } + node.right.parent = node.parent; + node.parent = node.right; + if (node.right.left != NIL) { + node.right.left.parent = node; + } + node.right = node.right.left; + node.parent.left = node; + } + } + + private void rotateRight(Node node) { + if (node.parent == NIL) { + Node left = root.left; + root.left = root.left.right; + left.right.parent = root; + root.parent = left; + left.right = root; + left.parent = NIL; + root = left; + } else { + if (node == node.parent.right) { + node.parent.right = node.left; + } else { + node.parent.left = node.left; + } + node.left.parent = node.parent; + node.parent = node.left; + if (node.left.right != NIL) { + node.left.right.parent = node; + } + node.left = node.left.right; + node.parent.right = node; + } + } + + public Node Search(Node x,int k) {//Ž + count++; + if(x==null || x.data==k) { + return x; + } + if(k>x.data) { + return Search(x.right,k); + }else { + return Search(x.left,k); + } + } + + public int getCount() { + return count; + } + + public void inorder(Node n) {//ȸ + if (n == NIL) { + return; + } + inorder(n.left); + System.out.print("data: "+n.data+((n.color==BLACK)?"| color: Red\n":"| color: Black\n")); + inorder(n.right); + } + + public void get_Sorted_List(Node n, ArrayList arr) { + if(n==NIL) return; + if(n.left !=null) + get_Sorted_List(n.left,arr); + arr.add(n.data); + if(n.right !=null) + get_Sorted_List(n.right,arr); + } + +} \ No newline at end of file diff --git a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java new file mode 100644 index 00000000..6f5a91f4 --- /dev/null +++ b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java @@ -0,0 +1,5 @@ +package upload; + +public class TestRBT { + +} From aeae40615b83d9afb2fa313ed99c86a9041129b2 Mon Sep 17 00:00:00 2001 From: leeeeeelee Date: Thu, 6 Dec 2018 23:27:46 +0900 Subject: [PATCH 2/6] Red Black Tree+ --- .../com/github/pedrovgs/problem81/RBT.java | Bin 5160 -> 12414 bytes .../github/pedrovgs/problem81/TestRBT.java | Bin 43 -> 1974 bytes 2 files changed, 0 insertions(+), 0 deletions(-) diff --git a/src/main/java/com/github/pedrovgs/problem81/RBT.java b/src/main/java/com/github/pedrovgs/problem81/RBT.java index 551b9a45c1fa72e3c5ad870b638a6df78bce11d8..6449ee7356330d3c809d05d8f7709265160ae91f 100644 GIT binary patch literal 12414 zcmd^F+iqJ$6rEQi@ehYQpoFFlt#|-R3oR`rYL%d*w5o(uIkA(5q)xD%OKJ15d;{;m zTC=^qXXebgC3!t?vO zjJqp1-gRHPJMJr-{o+P$h%v`Fe~FR1xE^Ed2-i>D-|ijG{>1sV`wRDXp@-M~g&ni^ zd?7u>m?30NAu+`H1m`m^S-6MrX)xDQxL9Tt<6iplQ|LN|G(GLZS9-1*mJ+EYM09WA zPl1S!VYz_k1DqGoa_nP2b@WR-Ily`0_F(16-y69LANh$NdEhPYLhc>BJ;JB~?hu*6 zo#Tq0SVVCQhD_mJC!QR;9mo!#fsqaHM;pvhf#Y7KPL7=|A~eLA(;4Kyb!+&X`%fQZ z4dFiYPLTaIABE(WC`@tZxmyPtp12L<_KCYaM_RS(v2ee_TcR}em`!l@2kYC?#?;_*TrZILCeBN@VsOc`)^e%pg7RGUm?^qox>3 zi5+-Cu2!)v&JC?G?^POvam;n$mcZ0)9M|!G3CBnNnpdlfOcd@FzJK94bL@So#fi;1+(6hNtcF)t2M#)RFw;S-4*)Gtl z)}dMa9ODjqy?(olIprJwvH4ka$96)bRknbCM1=ez24W|UzgkO}FViR)6A$daW^U;7 zGDtAiacO>714sCqz&pb>_D^Na1Lk)RF|oUo3$iNX6?+ z?P2VUGpsa~6Jx(tj&bcR_$@0-sRMGf%zw(~aWzh`7jO=jY$)sVQkR$I>RRQP&C$H`HL<(eOX;NbF`oO{AhYE; 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diff --git a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java index 47429178..3dacc605 100644 --- a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java +++ b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java @@ -1,4 +1,4 @@ -/* +/* * Copyright (C) 2014 Pedro Vicente Gómez Sánchez. * * Licensed under the Apache License, Version 2.0 (the "License"); From 200f1c1cb69a7544eaa9249ff382da28ab822d77 Mon Sep 17 00:00:00 2001 From: leeeeeelee Date: Thu, 6 Dec 2018 23:57:43 +0900 Subject: [PATCH 5/6] I want Upload... --- .../com/github/pedrovgs/problem81/RBT.java | 50 ++++--------------- .../github/pedrovgs/problem81/TestRBT.java | 31 ++---------- 2 files changed, 12 insertions(+), 69 deletions(-) diff --git a/src/main/java/com/github/pedrovgs/problem81/RBT.java b/src/main/java/com/github/pedrovgs/problem81/RBT.java index 883b108b..5cdd27cc 100644 --- a/src/main/java/com/github/pedrovgs/problem81/RBT.java +++ b/src/main/java/com/github/pedrovgs/problem81/RBT.java @@ -1,32 +1,5 @@ -/* - * Copyright (C) 2014 Pedro Vicente Gómez Sánchez. - * - * 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 com.github.pedrovgs.problem81; - -import com.github.pedrovgs.sortingalgorithm.SortingAlgorithm; - -/** - * Given an array full of integers implement a merge sort algorithm to sort the content inside - * the array. - * - * @author Pedro Vicente Gómez Sánchez. - */ - import java.util.ArrayList; - -public class RBT { + public class RBT { int count=0; private final boolean RED = false; @@ -40,16 +13,14 @@ public class Node { int data; boolean color=BLACK; Node left, right, parent; - - Node(int data) { + Node(int data) { this.data = data; this.left=NIL; this.right=NIL; this.parent=NIL; } } - - public void insert(int n) { + public void insert(int n) { Node node = new Node(n); Node temp = root; if (root == NIL) { @@ -80,8 +51,7 @@ public void insert(int n) { makeRBT(node); } } - - private void makeRBT(Node node) { + private void makeRBT(Node node) { while (node.parent.color == RED) { Node s = NIL; if (node.parent == node.parent.parent.right) { @@ -120,8 +90,7 @@ private void makeRBT(Node node) { } root.color = BLACK;//root always black } - - private void rotateLeft(Node node) { + private void rotateLeft(Node node) { if (node.parent == NIL) { Node right = root.right; root.right = right.left; @@ -145,8 +114,7 @@ private void rotateLeft(Node node) { node.parent.left = node; } } - - private void rotateRight(Node node) { + private void rotateRight(Node node) { if (node.parent == NIL) { Node left = root.left; root.left = root.left.right; @@ -171,7 +139,7 @@ private void rotateRight(Node node) { } } - public Node Search(Node x,int k) { + public Node Search(Node x,int k) {//Àç±ÍŽ»ö count++; if(x==null || x.data==k) { return x; @@ -187,7 +155,7 @@ public int getCount() { return count; } - public void inorder(Node n) { + public void inorder(Node n) {//ÁßÀ§¼øȸ if (n == NIL) { return; } @@ -205,4 +173,4 @@ public void get_Sorted_List(Node n, ArrayList arr) { get_Sorted_List(n.right,arr); } -} \ No newline at end of file +} \ No newline at end of file diff --git a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java index 3dacc605..97292a3e 100644 --- a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java +++ b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java @@ -1,28 +1,3 @@ -/* - * Copyright (C) 2014 Pedro Vicente Gómez Sánchez. - * - * 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 com.github.pedrovgs.problem81; - -import com.github.pedrovgs.sortingalgorithm.SortingAlgorithm; -import com.github.pedrovgs.sortingalgorithms.SortingAlgorithmTest; - -/** - * @author jsroyal. - */ -public class TestRBT extends SortingAlgorithmTest { - @Override public SortingAlgorithm getSortingAlgorithm() { - return new RBT(); - } -} +public class TestRBT { + return new RBT(); + } From 3e9c85c9398fd33952a1cb2468260c0c14f57a51 Mon Sep 17 00:00:00 2001 From: leeeeeelee Date: Fri, 7 Dec 2018 00:11:35 +0900 Subject: [PATCH 6/6] modified file --- .../com/github/pedrovgs/problem81/RBT.java | 68 ++++++++++++++++--- .../github/pedrovgs/problem81/TestRBT.java | 31 ++++++++- 2 files changed, 87 insertions(+), 12 deletions(-) diff --git a/src/main/java/com/github/pedrovgs/problem81/RBT.java b/src/main/java/com/github/pedrovgs/problem81/RBT.java index 5cdd27cc..f9892cd1 100644 --- a/src/main/java/com/github/pedrovgs/problem81/RBT.java +++ b/src/main/java/com/github/pedrovgs/problem81/RBT.java @@ -1,5 +1,50 @@ +/* + * Copyright (C) 2014 Pedro Vicente Gómez Sánchez. + * + * 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 com.github.pedrovgs.problem81; + +import com.github.pedrovgs.sortingalgorithm.SortingAlgorithm; + +/** + * Given an array full of integers implement a quick sort algorithm to sort the content inside + * the array. + * + * @author jsroyal + */ + + /** + * Quicksort (sometimes called partition-exchange sort) is an efficient sorting algorithm, serving + * as a systematic method for placing the elements of an array in order. Developed by Tony Hoare + * in 1959 and published in 1961, it is still a commonly used algorithm for sorting. When + * implemented well, it can be about two or three times faster than its main competitors, merge + * sort and heapsort. + * + * Quicksort is a comparison sort, meaning that it can sort items of any type for which a + * "less-than" relation (formally, a total order) is defined. In efficient implementations it is + * not a stable sort, meaning that the relative order of equal sort items is not preserved. + * Quicksort can operate in-place on an array, requiring small additional amounts of memory to + * perform the sorting. + * + * Mathematical analysis of quicksort shows that, on average, the algorithm takes O(n log n) + * comparisons to sort n items. In the worst case, it makes O(n2) comparisons, though this + * behavior is rare. + */ + import java.util.ArrayList; - public class RBT { + +public class RBT{ int count=0; private final boolean RED = false; @@ -13,14 +58,16 @@ public class Node { int data; boolean color=BLACK; Node left, right, parent; - Node(int data) { + + Node(int data) { this.data = data; this.left=NIL; this.right=NIL; this.parent=NIL; } } - public void insert(int n) { + + public void insert(int n) { Node node = new Node(n); Node temp = root; if (root == NIL) { @@ -51,7 +98,8 @@ public void insert(int n) { makeRBT(node); } } - private void makeRBT(Node node) { + + private void makeRBT(Node node) { while (node.parent.color == RED) { Node s = NIL; if (node.parent == node.parent.parent.right) { @@ -90,7 +138,8 @@ private void makeRBT(Node node) { } root.color = BLACK;//root always black } - private void rotateLeft(Node node) { + + private void rotateLeft(Node node) { if (node.parent == NIL) { Node right = root.right; root.right = right.left; @@ -114,7 +163,8 @@ private void rotateLeft(Node node) { node.parent.left = node; } } - private void rotateRight(Node node) { + + private void rotateRight(Node node) { if (node.parent == NIL) { Node left = root.left; root.left = root.left.right; @@ -139,7 +189,7 @@ private void rotateRight(Node node) { } } - public Node Search(Node x,int k) {//Àç±ÍŽ»ö + public Node Search(Node x,int k) { count++; if(x==null || x.data==k) { return x; @@ -155,7 +205,7 @@ public int getCount() { return count; } - public void inorder(Node n) {//ÁßÀ§¼øȸ + public void inorder(Node n) { if (n == NIL) { return; } @@ -173,4 +223,4 @@ public void get_Sorted_List(Node n, ArrayList arr) { get_Sorted_List(n.right,arr); } -} \ No newline at end of file +} \ No newline at end of file diff --git a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java index 97292a3e..240e9632 100644 --- a/src/test/java/com/github/pedrovgs/problem81/TestRBT.java +++ b/src/test/java/com/github/pedrovgs/problem81/TestRBT.java @@ -1,3 +1,28 @@ -public class TestRBT { - return new RBT(); - } +/* + * Copyright (C) 2014 Pedro Vicente Gómez Sánchez. + * + * 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 com.github.pedrovgs.problem81; + +import com.github.pedrovgs.sortingalgorithm.SortingAlgorithm; +import com.github.pedrovgs.sortingalgorithms.SortingAlgorithmTest; + +/** + * @author jsroyal. + */ +public class TestRBT{ + + return new RBT(); + +}