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。 :FF=a3/"6
插入排序: %#+Hl0,Tt
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package org.rut.util.algorithm.support; [E_9V%^
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import org.rut.util.algorithm.SortUtil; bA 2pbjg=
/** @ Qe0! (_=
* @author treeroot Z+SRXKQ
* @since 2006-2-2 \U0Q<ot/7
* @version 1.0 y =@N|f!
*/ ZSw.U:ep$s
public class InsertSort implements SortUtil.Sort{ 6)J#OKZ
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/* (non-Javadoc) /Oono6j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ri'n
*/ ]~-r}`]
public void sort(int[] data) { @EAbF>>
int temp; P>T"cv
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3|7QUld
} 9WHddDA
} |Tw~@kT@
} AA_%<zK
7)m9"InDI
} b>k y
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冒泡排序: N`i/mP
fA-7VdR`R
package org.rut.util.algorithm.support; KoY F]
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import org.rut.util.algorithm.SortUtil; ~[: 2I
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/** iso4]>LF
* @author treeroot @HW*09TG
* @since 2006-2-2 Efe 7gE'
* @version 1.0 & kIFcd@
*/ }u|q0>^8
public class BubbleSort implements SortUtil.Sort{ $]1=\I
6*?F @D2&
/* (non-Javadoc) i4Jc.8^9$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w!CNRtM:~
*/ 6zkaOA46V
public void sort(int[] data) { B!yr!DWv
int temp; 3T
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for(int i=0;i for(int j=data.length-1;j>i;j--){ -&f$GUTJ
if(data[j] SortUtil.swap(data,j,j-1); |{;G2G1[
} s{++w5s
} :,^gj
} K,]=6Rj
} R+| h w;
)[ ,A_3E
} g0
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选择排序: -di o5a
mmsPLv6
package org.rut.util.algorithm.support; wBzC5T%,
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import org.rut.util.algorithm.SortUtil; d _
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/** 'yth'[
* @author treeroot B *vM0
* @since 2006-2-2 $(9U @N9E
* @version 1.0 !W0v >p
*/ A
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public class SelectionSort implements SortUtil.Sort { +"(jjxJm
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/* \9d$@V
* (non-Javadoc) yVc(`,tZ(
* "KlwA.7/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ m>b2I?
*/ ]k(]qZ
public void sort(int[] data) { d3Rw!slIq
int temp; ^.G$Q# y,
for (int i = 0; i < data.length; i++) { Je@v8{][|
int lowIndex = i; tDo"K3
for (int j = data.length - 1; j > i; j--) { fnY.ao1-s[
if (data[j] < data[lowIndex]) { +#By*;BJ
lowIndex = j; 8Y3I0S
} SaCh
7 ^
} Wm|lSisY
SortUtil.swap(data,i,lowIndex); eFAnFJ][L
} "j-CZ\]U|
} r/sNrB1U"y
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} J;%Xfx]
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Shell排序: m,S{p<-h
.ByuN
package org.rut.util.algorithm.support; 2%>FR4a
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import org.rut.util.algorithm.SortUtil; OTp]Xe/
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/** :jx4{V
* @author treeroot X|[`P<'N<
* @since 2006-2-2
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* @version 1.0 IAEAhqp
*/ nie% eC&U
public class ShellSort implements SortUtil.Sort{ Wf<LR3
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/* (non-Javadoc) ^GX)Z~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DN/YHSYK
*/ a>)f=uS
public void sort(int[] data) { w:l"\Tm
for(int i=data.length/2;i>2;i/=2){ W`&hp6Jq
for(int j=0;j insertSort(data,j,i); W l16`9
} -DCbko
} yBRC*0+Vy
insertSort(data,0,1); m3ff;,
} 4sM.C9W
Mq8L0%j
/** aP`P)3O6)1
* @param data ]HdCt 3X
* @param j qa6,z.mQ
* @param i Jl<2>@
*/ lLD12d
private void insertSort(int[] data, int start, int inc) { Z=
!*e~j@
int temp; 875od
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V$~9]*Wn
} 3~\[7I/
} d\Zng!Z '
} vI]N^j2%
_~pbqa,
} 5PW^j\G-f
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快速排序: =mGez )T5\
uGt-l4
package org.rut.util.algorithm.support; <,(,jU)j
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import org.rut.util.algorithm.SortUtil; d %#b:(,
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/** p:%loDk
* @author treeroot .~}1+\~5
* @since 2006-2-2 'RRE|L,
* @version 1.0 }75e:w[
*/ EIQ
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public class QuickSort implements SortUtil.Sort{ XrPfotj1
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/* (non-Javadoc) @K]|K]cby
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *:NQ&y*uj
*/ ~,~eoW7
public void sort(int[] data) { k'"%.7$U!
quickSort(data,0,data.length-1); @R
6@]Dm
} U?=Dg1
private void quickSort(int[] data,int i,int j){ {_Gs*<.
int pivotIndex=(i+j)/2; B]$GSEB
file://swap <|\Lm20G]
SortUtil.swap(data,pivotIndex,j); +]50D xflA
Yuc> fFA
int k=partition(data,i-1,j,data[j]); c=+!>Z&i$G
SortUtil.swap(data,k,j); )0R'(#
if((k-i)>1) quickSort(data,i,k-1); )Beiu*
if((j-k)>1) quickSort(data,k+1,j); ?rup/4|
3&/Ixm:
} Bw{I;rW{2
/** -GgA&dh
* @param data ,1##p77.
* @param i @]#1(9P
* @param j w-{c.x
* @return p"Z-6m~
*/ eN~=*Mn(za
private int partition(int[] data, int l, int r,int pivot) { 3{h_&Gbo'D
do{ !L8#@BjU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $pudoAO
SortUtil.swap(data,l,r); }{<
'8J.R
} So
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while(l SortUtil.swap(data,l,r); PY0j9$i?
return l; o+9j?|M
} xRsWI!d+|
6u}</>}
} r)6M!_]AW
Z`BK/:vo3H
改进后的快速排序: -
CWywuD
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package org.rut.util.algorithm.support; ?NP1y9Y]i
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import org.rut.util.algorithm.SortUtil; \B
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/** pO.2<
* @author treeroot 8h4'(yGQQW
* @since 2006-2-2 Yir
[!{
* @version 1.0 0{[,E.
*/ C{bgkzr
public class ImprovedQuickSort implements SortUtil.Sort { ,'iE;o{Tu
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private static int MAX_STACK_SIZE=4096; 8'r[te4,
private static int THRESHOLD=10; PJ'E/C)i
/* (non-Javadoc) t!\tF[9e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A_#DJJMm
*/ !&Pui{F
public void sort(int[] data) { D#/Bx[
int[] stack=new int[MAX_STACK_SIZE]; a+PzI x2
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int top=-1; 0,8okAH
int pivot; |id
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int pivotIndex,l,r; wg]LVW}
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stack[++top]=0; @{pLk4E
stack[++top]=data.length-1; :$9tF>
2Q"K8=s
while(top>0){ 4X(H;
int j=stack[top--]; ]P2"[y
int i=stack[top--]; $"&{aa
[=]4-q6UN
pivotIndex=(i+j)/2; lo!+f"7ym\
pivot=data[pivotIndex]; dmN&+t
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SortUtil.swap(data,pivotIndex,j); {T
Ug.%u
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file://partition :Qf '2.h)
l=i-1; f.`*Qg L
r=j; 78%~N`x7
do{ NS6:yX,/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !o[7wKrXb
SortUtil.swap(data,l,r); Q( {
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} m<qJcZk
while(l SortUtil.swap(data,l,r); =k:,qft2
SortUtil.swap(data,l,j); ,$+V
yN
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if((l-i)>THRESHOLD){ [bNx^VP*
stack[++top]=i; bB;5s`-
stack[++top]=l-1; r!a3\ep
} H_<C!OgR
if((j-l)>THRESHOLD){ f &wb
stack[++top]=l+1; "{Eta
stack[++top]=j; \<6CZ
} usL*
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,tJ"
5O3-
} 'D"C4;X
file://new InsertSort().sort(data); 2Jmz(cH%
insertSort(data); -n<pPau2
} Y~E`9
/** 3%;a)c;D
* @param data ([LSsZ]sj
*/ 4u47D$=
private void insertSort(int[] data) { ;K&o-y
int temp; 5=?\1`e1[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o"BoZsMk
} WYYa/,{9.
} "E?2xf|.
} Hi`//y*92H
o W Nh@C
} tWa)_y
:s6o"VkW
归并排序: r[Hc>wBv
t; {F%9j{
package org.rut.util.algorithm.support; 'V=P*#|SR
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import org.rut.util.algorithm.SortUtil; jc f #6
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/** c[1oww
* @author treeroot V0XvJ
* @since 2006-2-2 6}Y#= }
* @version 1.0 O,h ;hQZ
*/ :|8M`18lZ
public class MergeSort implements SortUtil.Sort{ {"QNJq#:
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/* (non-Javadoc) 7 uKY24
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k<{{*
*/ spPNr
public void sort(int[] data) {
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int[] temp=new int[data.length]; &,CiM0
mergeSort(data,temp,0,data.length-1); P8)=Kbd
} j*jo@N|
}\:NuTf
private void mergeSort(int[] data,int[] temp,int l,int r){ G&V/Gj8
int mid=(l+r)/2; iBgx
if(l==r) return ; "z=SO1
mergeSort(data,temp,l,mid); [>%xd)8.c
mergeSort(data,temp,mid+1,r); g:dH~>
for(int i=l;i<=r;i++){ 2!J&+r
temp=data; K;z7/[%
} Uu(SR/R}
int i1=l; V<uR>TD(
int i2=mid+1; z] ?N+NHOA
for(int cur=l;cur<=r;cur++){ l6 H|PR{
if(i1==mid+1) M`i\VG
data[cur]=temp[i2++]; {I #]@,
else if(i2>r) mFaZio0GK
data[cur]=temp[i1++]; D(RTVef
else if(temp[i1] data[cur]=temp[i1++]; ^y1j.M@q
else #(JNn'fzq
data[cur]=temp[i2++]; 4 k _vdz
} .QJ5sgmh
} YLv'43PL
es&vMY
} |O9O )o
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改进后的归并排序: Midy"
/}
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package org.rut.util.algorithm.support; 7 Vo$(kj
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import org.rut.util.algorithm.SortUtil; $m1z-i;/
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/** v`zJb00DT
* @author treeroot gSUcx9f]
* @since 2006-2-2 MET' (m
* @version 1.0 $79=lEn,
*/ "4+WZR]
public class ImprovedMergeSort implements SortUtil.Sort { 0rDh}<upjk
i/ )am9
private static final int THRESHOLD = 10; Tewb?:
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/* Sf7\;^
* (non-Javadoc) a\E:sPM'>
* |>27B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z}l3l`h!
*/ &6YIn|}
public void sort(int[] data) { \uC15s<
int[] temp=new int[data.length]; u!X|A`o5i
mergeSort(data,temp,0,data.length-1); '~&X wZ&
} DSk/q-'u
M
.JoHH
private void mergeSort(int[] data, int[] temp, int l, int r) { sy"^?th}b
int i, j, k; u\{ g(li-I
int mid = (l + r) / 2; =L:4i\4
if (l == r) 2h1C9n%j9
return; 87P>IO
if ((mid - l) >= THRESHOLD) U\;6mK)M^J
mergeSort(data, temp, l, mid); ()+<)hg}2
else ^,8)iV0j_
insertSort(data, l, mid - l + 1); J)~L
if ((r - mid) > THRESHOLD) bMMh|F
mergeSort(data, temp, mid + 1, r); EzV96+
else X{'q24\F
insertSort(data, mid + 1, r - mid); pd7NF-KD
-
'W++tH=
for (i = l; i <= mid; i++) { An"</;HU
temp = data; VG5+CU
} PuT@}tw
for (j = 1; j <= r - mid; j++) {
lq&wXi
temp[r - j + 1] = data[j + mid]; m~u5kbHOi=
} O#k6' LN?
int a = temp[l]; T'&I{L33Y
int b = temp[r]; @zz1hU
for (i = l, j = r, k = l; k <= r; k++) { r1LViK
if (a < b) { fhp<oe>D
data[k] = temp[i++]; qI<mjB{3`
a = temp; #=f?0UTA
} else { >wBJy4:
data[k] = temp[j--]; &LVn6zAba
b = temp[j]; j eX^}]x|%
} k_q0Q;6w!l
} W"'iIh)z
`
} }J1tdko#
.CU5}Tv-
/** mkF"
* @param data qX
* @param l Boz@bl mCB
* @param i xAe~]k_D
*/ SNE#0L'}
private void insertSort(int[] data, int start, int len) { V8-oYwOR
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wK-3+&,9
} z3M6V}s4
} w1"nffhO
} ,%Up0Rr,
} &PK\|\\2
Q|L9gz[?
堆排序: rJ{O(n]j
,JN8f]a^"g
package org.rut.util.algorithm.support; yi%-7[*]=
R Yl>
import org.rut.util.algorithm.SortUtil; cwWodPNm
2e9es
/** fKeT~z{~
* @author treeroot q**G(}K
* @since 2006-2-2 D]~MC
* @version 1.0 _DNHc*
*/ j;3[KLmuK%
public class HeapSort implements SortUtil.Sort{ o1Q7Th
fasgmi}
/* (non-Javadoc) Qx47l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6 9NQ]{1
*/ yz*6W
z D
public void sort(int[] data) { UHxE)]J
MaxHeap h=new MaxHeap(); Yf~{I-|`q
h.init(data); @kU@N?5e
for(int i=0;i h.remove(); bk^TFE1l
System.arraycopy(h.queue,1,data,0,data.length); J6G(_(d
} E7)=`kSl
_Bp1co85MQ
private static class MaxHeap{ G\Ro}5TO
Bw64
void init(int[] data){ *9c!^$V
this.queue=new int[data.length+1]; Fa_VKAq
for(int i=0;i queue[++size]=data; Y> Wu
fixUp(size); /3:q#2'v
} Nn"+w|v[ev
} u(t#Ze~Y1
ZRVT2VfN
private int size=0; *@)O7vB
R@#G>4
private int[] queue; z,bQQ;z9
w MP
public int get() { ' dx1x6
return queue[1]; nn9wdt@.]
} O
Wj@<N
pBP.x#|
public void remove() { FEW_bP/4
SortUtil.swap(queue,1,size--); z2hc.29t
fixDown(1);
\$OF1i@
} @b~fIW_3>
file://fixdown 9Q-*@6G
private void fixDown(int k) { (N=5.7"T
int j; _#}n~}d
while ((j = k << 1) <= size) { PF7&p~O(Z
if (j < size %26amp;%26amp; queue[j] j++; JA_BKA
if (queue[k]>queue[j]) file://不用交换 4bJZmUb
break; Mz;[ +p
SortUtil.swap(queue,j,k); xOHgp=#D
k = j; [mr9(m[F
} m7GR[MR
} u=/CRjot
private void fixUp(int k) { pOkLb
#
while (k > 1) { JiU9CeD3
int j = k >> 1; ?8mlZ
X9C
if (queue[j]>queue[k]) STw#lU) %(
break; (q7
Ry4-
SortUtil.swap(queue,j,k); \7
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k = j; ^F"iP7
} @*DyZB
} 'EfR|7m
4r0b)Y&I
} k8uvNLA)a
{E0z@D)U-
} LW:LFzp
D^;*U[F?
SortUtil: .*JA!B
F5qFYL;
package org.rut.util.algorithm; AkT<2H|4
A
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import org.rut.util.algorithm.support.BubbleSort; rzI|?QaPi
import org.rut.util.algorithm.support.HeapSort; 5rV((
import org.rut.util.algorithm.support.ImprovedMergeSort; l?)ZJ3]a
import org.rut.util.algorithm.support.ImprovedQuickSort; H7kPM[
import org.rut.util.algorithm.support.InsertSort; A?T<",bO
import org.rut.util.algorithm.support.MergeSort; FsGlJ
import org.rut.util.algorithm.support.QuickSort; 9A7@
5F
import org.rut.util.algorithm.support.SelectionSort; "h7tnMS
import org.rut.util.algorithm.support.ShellSort; )
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H<G4O02i_
/** 3TZ*RPmFRm
* @author treeroot kY&h~Q
* @since 2006-2-2 =@5x"MOz
* @version 1.0 Iu35#j
*/
E|$Oha[
public class SortUtil { )CS.F=
public final static int INSERT = 1; K!mOr
public final static int BUBBLE = 2; b]JI@=s?
public final static int SELECTION = 3; J!*/a'Cv
public final static int SHELL = 4; 'XUKN/.
public final static int QUICK = 5; 7RvUH-S[
public final static int IMPROVED_QUICK = 6; &X]\)`j0
public final static int MERGE = 7; 2. X" f
public final static int IMPROVED_MERGE = 8; UP{j5gR:_
public final static int HEAP = 9; Y}D onF
=0'q!}._!
public static void sort(int[] data) { %,*G[#*&
sort(data, IMPROVED_QUICK); nD2,!71
} Wi}FY }f
private static String[] name={ 9cv]y#
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" TV}}dw
}; h`}3h<
8
<_./SC
private static Sort[] impl=new Sort[]{ ;!T{%-tP
new InsertSort(), ?n\*,{9
new BubbleSort(), .~gl19#:T
new SelectionSort(), nB ". '=
new ShellSort(), Jj^GWZRu
new QuickSort(), w_iam qe,
new ImprovedQuickSort(), (:+>#V)pZ
new MergeSort(), T^}
new ImprovedMergeSort(), X+n`qiwq
new HeapSort() *}):<nB$^
}; TjBY
4
<[/%{sUNC
public static String toString(int algorithm){ ozr9>b>M
return name[algorithm-1]; 2`=6 %s
} :;!\vfZbU
#DkD!dW(l
public static void sort(int[] data, int algorithm) { ;bX4(CMe
&
impl[algorithm-1].sort(data); H2-28XGc
} @lUlY2
te4= S
public static interface Sort { VRW]a
public void sort(int[] data); AP\ofLmq
} v1.q$ f^(
Us~ X9n_F
public static void swap(int[] data, int i, int j) { <39!G7ny
int temp = data; qYp$fmj
data = data[j]; Y#01o&f0n
data[j] = temp; 8 )\M:s~7&
} qOG}[%<^n7
} [W,-1.$!dM