用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 9nng}em>.
插入排序: S}zC3
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package org.rut.util.algorithm.support; l9_m>X~
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import org.rut.util.algorithm.SortUtil; YHETI~'j.
/** H{j~ihq7
* @author treeroot *TJBPM,
* @since 2006-2-2 x9xzm5
* @version 1.0 CCuxC9i7
*/ }7iUagN
public class InsertSort implements SortUtil.Sort{ pGY [f@_x-
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/* (non-Javadoc) Xy[}G p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jmRhAJV
*/ f|X[gL,B
public void sort(int[] data) { sEoZ1E
int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,"@w>WL<9
} @b]VCv0*f%
} I") H~
} ~@%(RMJm&
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} H!Wis3S3G
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冒泡排序: NU|qX {-
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package org.rut.util.algorithm.support; ~;}\zKQKE
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import org.rut.util.algorithm.SortUtil; =ZG<BG_
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/** nARxn#<+
* @author treeroot XQK^$Iq]V
* @since 2006-2-2 A)OdQFet(
* @version 1.0 <"N:rn{Qq
*/ ]AFj&CteZ/
public class BubbleSort implements SortUtil.Sort{ l &}piC
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/* (non-Javadoc) /CIx$G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SrSG{/{
*/ y= 2=DU
public void sort(int[] data) { 5RW@_%C
int temp; NI^{$QMj
for(int i=0;i for(int j=data.length-1;j>i;j--){ b([:,T7
if(data[j] SortUtil.swap(data,j,j-1); ]F*|U`
} v,n);
} S<V-ZV&_:U
} <BZ_ (H
} 1d`cTaQ-
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} 8098y,mQe
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选择排序: KCE=|*6::|
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package org.rut.util.algorithm.support; QQ*gFP.Ao
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import org.rut.util.algorithm.SortUtil; ol50d73B
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/** B@d1xjp)']
* @author treeroot SK?I.
* @since 2006-2-2 VXiui'/(
* @version 1.0 WmNA5;<Q
*/ PVhik@Yoh
public class SelectionSort implements SortUtil.Sort { @]*[c})/
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/* g-XKP
* (non-Javadoc) N5yJ'i~,M
* >A<Df
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #kj~G]QA
*/ z23#G>I&
public void sort(int[] data) { 5~QhX22
int temp; -=5EbNPwG
for (int i = 0; i < data.length; i++) { C B6A}m
int lowIndex = i; : g5(HH
for (int j = data.length - 1; j > i; j--) { xg?auje
if (data[j] < data[lowIndex]) { w"1x=+
lowIndex = j; kY=rz&?U
} '|_/lz$h
} f`,-b
SortUtil.swap(data,i,lowIndex); 5lGQ#r
} 7"#f!.E
} d)\2U{
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} uj)yk*
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Shell排序: 55^tfu
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package org.rut.util.algorithm.support; GtC7^Z&E
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import org.rut.util.algorithm.SortUtil; Y|_O8[
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/** @cPflb
* @author treeroot )y`i@S}J
* @since 2006-2-2 ^,`M0g\$
* @version 1.0 S#mK
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*/
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public class ShellSort implements SortUtil.Sort{ i@XB&;*c\
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/* (non-Javadoc) ##v`(#fu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7LfcF
*/ iKhH ^V%j
public void sort(int[] data) { *Z; r
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for(int i=data.length/2;i>2;i/=2){ HAd%k$Xu{
for(int j=0;j insertSort(data,j,i); `UQEXoB)
} XC2FF&B&
} sCkO0dl8
insertSort(data,0,1); (vnoP< 0
} C s#w72N
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/** )nOE8y/
* @param data ctHEEFWm
* @param j F{\=PCZ>7
* @param i @y5= J`@=
*/ 0yaMe@&,
private void insertSort(int[] data, int start, int inc) { 57<Di!rt
int temp; x}|+sS,g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -x{&an=
} e8-ehs>
} ^&MK42,\
} >azEed<B
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} yPN+W8}f
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快速排序: j;+["mi
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package org.rut.util.algorithm.support; Zw#<E
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import org.rut.util.algorithm.SortUtil; :v)6gz(p
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/** Z9VR]cf?
* @author treeroot {[P!$
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* @since 2006-2-2 M*(H)i;s:w
* @version 1.0 \7 Gz\=\LR
*/ 1O0X-C,wo$
public class QuickSort implements SortUtil.Sort{ @$c!/
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/* (non-Javadoc) 6@YH#{~Zpv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $UC {"0
*/ iD714+N(
public void sort(int[] data) { {m[Wyb(
quickSort(data,0,data.length-1); 96}eR,
} jkt6/H
private void quickSort(int[] data,int i,int j){ b
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int pivotIndex=(i+j)/2; GW/WUzK
file://swap SY T$3|a
SortUtil.swap(data,pivotIndex,j); jT-<IJh!o
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int k=partition(data,i-1,j,data[j]); F>-}*o
SortUtil.swap(data,k,j); ``4?a7!!
if((k-i)>1) quickSort(data,i,k-1); 4.w"(v9 V
if((j-k)>1) quickSort(data,k+1,j); MUwxgAG`G
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} ~},W8\C>
/** Z0\Iyc G
* @param data t^U^Tr
* @param i SiTeB)/
* @param j M1{(OY(G
* @return s[X
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*/ x.UaQ |F
private int partition(int[] data, int l, int r,int pivot) { #xp(B5
do{ m9t$h
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g "*;nHI D
SortUtil.swap(data,l,r);
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} F#|Z# Mu
while(l SortUtil.swap(data,l,r); RRzP*A%=
return l; f GarUV
} T8Na]V5
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} X 8R1a?
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改进后的快速排序: g~)3WfC$[
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package org.rut.util.algorithm.support; ^P$7A]!
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import org.rut.util.algorithm.SortUtil; YgimJsm
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/** {7X~!e|w
* @author treeroot R=$Ls6z
* @since 2006-2-2 (p,}'I#i*
* @version 1.0 |' ;7v)CIG
*/ D^?_"wjW
public class ImprovedQuickSort implements SortUtil.Sort { u"Fjw F?
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private static int MAX_STACK_SIZE=4096; 6fGK(r
private static int THRESHOLD=10; BS2?!;,8
/* (non-Javadoc) PGX+p+wB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (/?R9T[V&^
*/ hSMV&Cs
public void sort(int[] data) { &t3Jv{
int[] stack=new int[MAX_STACK_SIZE]; F,pCR7o>
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int top=-1; Zi{0-m6+
int pivot; %rcFT_
int pivotIndex,l,r; q-IWRb0j%a
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stack[++top]=0; =DMbz`t
stack[++top]=data.length-1; ik\S88|
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while(top>0){ Kz[BB@[
int j=stack[top--]; w~N-W8xNR
int i=stack[top--]; j04/[V)
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pivotIndex=(i+j)/2; Funj!x'uE
pivot=data[pivotIndex]; ?D=8{!R3
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SortUtil.swap(data,pivotIndex,j); ;rHz;]si
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file://partition F$yeF^\g
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r=j; K)5;2lN,
do{ oEIqA
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5;Ia$lm=y
SortUtil.swap(data,l,r); x6e +7"#~
} rPO}6lsc
while(l SortUtil.swap(data,l,r); CQ> ]jQ,2
SortUtil.swap(data,l,j); a))*F!}c
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if((l-i)>THRESHOLD){ 2AK}D%jfc
stack[++top]=i; 6x4_b
stack[++top]=l-1; kqf8=y
} m6MaX}&zv
if((j-l)>THRESHOLD){ S@A<6
stack[++top]=l+1; or.\)(m#(
stack[++top]=j; 5"gL.Ez
} rzT{-DZB[4
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} CQ1 8%w6
file://new InsertSort().sort(data); Ja [#[BJ?
insertSort(data); X6kaL3L}
} s<VJ`Ur
/** j_c+.iET
* @param data bA*"ei+!
*/ <kbnu7?a*
private void insertSort(int[] data) { Tf[dZ(+\
int temp; u){S$</
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j@t{@Ke
} ]]y[t|6
} FG#nap{
} 0BDS_Rx
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} y5%5O xB
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归并排序: ?i%nMlcc
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package org.rut.util.algorithm.support; JMePI%#8
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import org.rut.util.algorithm.SortUtil; T 9MzUV&
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/** oG\>--
* @author treeroot :`5;nl63
* @since 2006-2-2 R8ZD#,;
* @version 1.0 Q@Dkl
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*/ ?FDJqJM
public class MergeSort implements SortUtil.Sort{ tvCcyD%w
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/* (non-Javadoc) tNB%eb{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ F {/>u(@3
public void sort(int[] data) { ph+M3q(z
int[] temp=new int[data.length]; r;'i<t{P
mergeSort(data,temp,0,data.length-1); G
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} T;J7+0
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private void mergeSort(int[] data,int[] temp,int l,int r){ W7$s5G,
int mid=(l+r)/2; HM
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if(l==r) return ; 3? };
mergeSort(data,temp,l,mid); Yfe'#MKfL
mergeSort(data,temp,mid+1,r); #1B}-PGCm
for(int i=l;i<=r;i++){ r(]98a]o~
temp=data; %6N)G!P
} C_-%*]*,j
int i1=l; ^K"ZJ6?+1
int i2=mid+1; Y}S.37|+^
for(int cur=l;cur<=r;cur++){ %uj[ `
if(i1==mid+1) \FVNXUMU
data[cur]=temp[i2++]; =pyVn_dg
else if(i2>r) 3Fgz)*Gu]
data[cur]=temp[i1++]; ~};]k }
else if(temp[i1] data[cur]=temp[i1++]; K[e`t%2_
else [#IBYJ.6
data[cur]=temp[i2++]; ; 4l-M2
} <>VIDE
} Bj; [
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} hr%U>U9F
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改进后的归并排序: 1>hb-OMX
Wux 0RF&
package org.rut.util.algorithm.support; tc"T}huypU
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import org.rut.util.algorithm.SortUtil; 0T(O'v}.
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/** X{#bJ
* @author treeroot KuIkul9^%
* @since 2006-2-2 h|K\z{ A
* @version 1.0 Fs?( UM
*/ G aha Z
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public class ImprovedMergeSort implements SortUtil.Sort { " 98/HzR
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private static final int THRESHOLD = 10; :wFb5"
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/* "&@gX_%
* (non-Javadoc) cLn; ,u4
* )uANmThOz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _MGNKA6JI
*/ ;9}w|!/
public void sort(int[] data) { D% oueW
int[] temp=new int[data.length]; ,<7"K&
mergeSort(data,temp,0,data.length-1); [SK2 x4
} ] gH
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private void mergeSort(int[] data, int[] temp, int l, int r) { joxS+P5#
int i, j, k; Tnf&pu#5
int mid = (l + r) / 2; MKV=m8G=
if (l == r) O'"YJ,
return; Ii|uGxEc
if ((mid - l) >= THRESHOLD) pTc$+Z73
mergeSort(data, temp, l, mid); { k
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else J>&[J!>r
insertSort(data, l, mid - l + 1); >Kz_My9
if ((r - mid) > THRESHOLD) !>CE(;E>z
mergeSort(data, temp, mid + 1, r); lq;
else =n> iQS
insertSort(data, mid + 1, r - mid); X7t5b7
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for (i = l; i <= mid; i++) { _`TepX R
temp = data; y2oB]^z&n
} &r&;<Q
for (j = 1; j <= r - mid; j++) { X(4s;i
temp[r - j + 1] = data[j + mid]; K%98;e9
} pGO|~:E/L
int a = temp[l]; eV"d v*R
int b = temp[r]; l R:Ok8e
for (i = l, j = r, k = l; k <= r; k++) { ]ev *m&O
if (a < b) { D-'i G%)kA
data[k] = temp[i++]; N7d17c.
5
a = temp; 6XQ*:N/4al
} else { WAtg
data[k] = temp[j--]; 5oVLv4Z9u
b = temp[j]; %M|Z}2qv
} 8:Z@ lp^
} KC&H*
} SNQz8(O
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