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。 ,+5!1>\
插入排序: ?G5,x
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package org.rut.util.algorithm.support; ;[,#VtD
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import org.rut.util.algorithm.SortUtil;
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/** \7(OFT\u:
* @author treeroot rqM_#[Y?
* @since 2006-2-2 ${UH!n{
* @version 1.0 k~1{|HxrE
*/ )B^T7{
public class InsertSort implements SortUtil.Sort{ K!G/iz9SB
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/* (non-Javadoc) wD<W'K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f./j%R@
*/ erV&N,cI
public void sort(int[] data) { |P"kJ45
int temp; 7YU}-gi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Eo{js?1G_
} Js,.$t
} `b5pa `\4
} Ed"p|5~
G7HvA46
} .!1E7\
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冒泡排序: V#-8[G6Ra
gM
v0[~;u
package org.rut.util.algorithm.support; ,Ct1)%
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import org.rut.util.algorithm.SortUtil; i~*#z&4A+
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/** {,o 0N\(
* @author treeroot sCAWrbOe>
* @since 2006-2-2 ^<e(3S:
* @version 1.0 UZW)%
*/ f@xjNm*'Z
public class BubbleSort implements SortUtil.Sort{ &m@DK>
v}"DW?
/* (non-Javadoc) DIc -"5~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Czd)AVK
*/ ^pvnUODW[
public void sort(int[] data) { ^{+_PWn
int temp; ?w "zW6U
for(int i=0;i for(int j=data.length-1;j>i;j--){ Mg{=(No
if(data[j] SortUtil.swap(data,j,j-1); 1&YkRCn0
} ca$K)=cDW
} SfwNNX%
} ~jOk?^6
} wEb10t,
>VvA&p71b
} ,fD#)_\g2
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选择排序: Md1ePp]
J?bx<$C@
package org.rut.util.algorithm.support; CF@j]I@{
8}!WJ2[R
import org.rut.util.algorithm.SortUtil; 'di(5
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/** hW-?j&yJ?
* @author treeroot e:RgCDWL
* @since 2006-2-2 XRWy#Pj
* @version 1.0 agPTY{;
*/ 10e~Yc
public class SelectionSort implements SortUtil.Sort { 1ihdH1rg[
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/* rTtxmw0
* (non-Javadoc) QetyuhS~
* _{YUWV50}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vqxxm&^P
*/ GUqBnRA8j
public void sort(int[] data) { @L5s.]vg=
int temp; :PDyc(s{
for (int i = 0; i < data.length; i++) { lH1gWe
int lowIndex = i; 45tQ$jr`1
for (int j = data.length - 1; j > i; j--) { {3*Zx"e![
if (data[j] < data[lowIndex]) { >du|DZq
lowIndex = j; @
M
} o0F&,|'
} di]TS9&9
SortUtil.swap(data,i,lowIndex); 5X,|Pn
} rE$=~s
} ~k'SP(6#C
c R6:AGr
} c^EU&q{4
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Shell排序: 78/,rp#'_
S;I}:F#5
package org.rut.util.algorithm.support; |'N)HH>;
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import org.rut.util.algorithm.SortUtil; R&]#@PW^
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/** )lrmP(C*.a
* @author treeroot 8XdgtYm
* @since 2006-2-2 q=`i
* @version 1.0 E8]kd
*/ nb}rfd.
public class ShellSort implements SortUtil.Sort{ B0|!s
;30SnR/
/* (non-Javadoc) ~l"]J'jF"H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VH7nyqEM
*/ =WM^i86
public void sort(int[] data) { JBt2R=
for(int i=data.length/2;i>2;i/=2){ 2nkymEPu
for(int j=0;j insertSort(data,j,i); cZlDdr%
} /l1OC(hm
} :.aMhyh#*
insertSort(data,0,1); ?Es(pwJB
} On-zbE
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/** ,u_ Z0S M
* @param data Z|$M 9E
* @param j hU6oWm
* @param i |Q+:vb:
*/ !\5w<*p8
private void insertSort(int[] data, int start, int inc) { TP{2q51yM
int temp; Cd2A&RB
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 85?;\5%-
} zv0bE?W9
} c8Je&y8
} 2mEvoWnJ
ApNS0
} #g=
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快速排序: {;vLM*
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package org.rut.util.algorithm.support; Dl@Jj?zc
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import org.rut.util.algorithm.SortUtil; G&
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*}) W>
/** 7>lM^ :A
* @author treeroot V:h7}T95
* @since 2006-2-2 5Mz:$5Tm
* @version 1.0 F.),|t$\
*/ ,49Z/P
public class QuickSort implements SortUtil.Sort{ 7YFEyX10d
nvQTJ4,,
/* (non-Javadoc) ^!fY~(=U4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PdtL
Cgd
*/ G>Hg0u0!,
public void sort(int[] data) { F3[,6%4v
quickSort(data,0,data.length-1); Wh)!Ha}
} F1meftK
private void quickSort(int[] data,int i,int j){ eG7Yyz+t$
int pivotIndex=(i+j)/2; }O Y/0p-Z
file://swap $*|M+ofQ
SortUtil.swap(data,pivotIndex,j); :V1j*)
yd=b!\}WJ
int k=partition(data,i-1,j,data[j]); %=!] 1
SortUtil.swap(data,k,j); [ ou$*
if((k-i)>1) quickSort(data,i,k-1); XBoq/kbw!
if((j-k)>1) quickSort(data,k+1,j); 2VzYP~Jg
"}V_.I*+
} c?N,Cd~q
/** Wy%FF\D.Y
* @param data 5owK2
* @param i jD${ZIv
* @param j xHMFYt+0$G
* @return .cbC2t95
*/ s VHk;:e>x
private int partition(int[] data, int l, int r,int pivot) { -n8d#Qm)
do{ ;tSAQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1jej7p>K
SortUtil.swap(data,l,r); [dAQrou6P
} T7%!JBg@
while(l SortUtil.swap(data,l,r); AgZ?Ry
return l; :AS`1\ C
} ?w+ V:D
"F%JZO51
} 7B)1U_L0H
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改进后的快速排序: le]~Cy0
lLDZ#'&An
package org.rut.util.algorithm.support; 1[T7;i$
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import org.rut.util.algorithm.SortUtil; a{.q/Tbt
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/** QeG9CS)E}j
* @author treeroot Xh>($ U
* @since 2006-2-2 A4cOnG,
* @version 1.0 naW!b&:
*/ g(WP
public class ImprovedQuickSort implements SortUtil.Sort { EG;E !0
- X71JU
private static int MAX_STACK_SIZE=4096; .z.4E:Iq
private static int THRESHOLD=10; fj))Hnt(|
/* (non-Javadoc) XIbZ_G^ +D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }&t>j[
*/ YT
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public void sort(int[] data) { Z sTtSM\Ac
int[] stack=new int[MAX_STACK_SIZE]; !~Uj 'w
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int top=-1; %KXiB6<4
int pivot; D**GC
int pivotIndex,l,r; S k~"-HL|
&J*M
stack[++top]=0; U~N7\Pa4
stack[++top]=data.length-1; +ti ?7|bK<
]MV8rC[\
while(top>0){ *q*3SP/
int j=stack[top--]; WXl+w7jr
int i=stack[top--]; q.VYPkEib
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pivotIndex=(i+j)/2; pW(rNAJ!
pivot=data[pivotIndex]; Ki2!sADd
by
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SortUtil.swap(data,pivotIndex,j); ds(?:zx#
b.&WW
file://partition X,7y| tb
l=i-1; D j&~x
r=j; _*fNa!@hY
do{ Sw\*$g]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *h!fqT%9
SortUtil.swap(data,l,r); P5h|* ?=
} ,vJt!}}
while(l SortUtil.swap(data,l,r); 6<._^hyq
SortUtil.swap(data,l,j); w +t@G`d
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if((l-i)>THRESHOLD){ - {QU>`2
stack[++top]=i; 4Z( #;9f
stack[++top]=l-1; EiL#Dwx
} B7C3r9wj
if((j-l)>THRESHOLD){ Q +^&
stack[++top]=l+1; YAr6cl
stack[++top]=j; /SD}`GxH
} wA=r]BT
vk&
gR
} Ke\\B o,
file://new InsertSort().sort(data); ?Z7`TnG$uf
insertSort(data); QJGGce
}
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/** r]DiB:.
* @param data Gk,Bx1y
*/ &S,D;uhF
private void insertSort(int[] data) { \<4N'|:
int temp; /4:bx#;A
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;c(a)_1
} KA5)]UF`l
} ze+YQF
} ?"6Zf LRi
m[9.'@ye
} >XD?zF)6
Kc MzY
归并排序: {"y/;x/
e
w^(3&
package org.rut.util.algorithm.support; rbw$=bX}
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import org.rut.util.algorithm.SortUtil; x84!/n^z
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/** _gvFs%J
* @author treeroot "TV'}HH
* @since 2006-2-2 6j<9Y
* @version 1.0 :QE5 7.
*/ BuJo W@)
public class MergeSort implements SortUtil.Sort{ {ZJO5*
XH%L]
/* (non-Javadoc) aAo|3KCs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z5+Pi:1w
*/ ]ss[n.T0*
public void sort(int[] data) { eA/n.V$z
int[] temp=new int[data.length]; 4"d,=P.{
mergeSort(data,temp,0,data.length-1); m5\T,
} 2w?q7N%
w_9^YO!!
private void mergeSort(int[] data,int[] temp,int l,int r){ +>ju,;4WK
int mid=(l+r)/2; 4ot<Uw5
if(l==r) return ; xEb>6+-F@
mergeSort(data,temp,l,mid); cG|fau<G
mergeSort(data,temp,mid+1,r); ke4E1T-1n
for(int i=l;i<=r;i++){ j6
wFks
temp=data; {15j'Qwm
} d
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int i1=l; Wn%P.`o#
int i2=mid+1; ?w3RqF@}
for(int cur=l;cur<=r;cur++){ mw@Pl\=
if(i1==mid+1) &5CRXf
data[cur]=temp[i2++]; })g<I+]Hf9
else if(i2>r) ?Oyo /?/
data[cur]=temp[i1++]; cc@W
6W
else if(temp[i1] data[cur]=temp[i1++]; tpfgUZ{
else S}6Ld(_
data[cur]=temp[i2++]; Q@D7\<t
} SSK}'LQ
} GO"`{|o
222 Y?3>@D
} /K=OsMl2b8
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改进后的归并排序: 6h 0qtXn-
OO:S2-]Y>e
package org.rut.util.algorithm.support; B8&q$QV
(gt\R}
import org.rut.util.algorithm.SortUtil; Fmk:[hMw
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/** [xS7ae
* @author treeroot qu=~\t1[6
* @since 2006-2-2 dwO fEYC
* @version 1.0 "1O_h6C
*/ 0~|0D#klB
public class ImprovedMergeSort implements SortUtil.Sort { XlppA3JON|
v%tjZ5x
private static final int THRESHOLD = 10; |t,sK aL
5100fX}
/* x :SjdT
* (non-Javadoc) <=(K'eqC^
* Vt`4u5HG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l*CulVX
*/ QiCia#_
public void sort(int[] data) { l`v5e"V
int[] temp=new int[data.length]; /[R=-s ;
mergeSort(data,temp,0,data.length-1); UZdnsG7
} >6es
5}
~OD6K`s3
private void mergeSort(int[] data, int[] temp, int l, int r) { c`E>7Hjr-
int i, j, k; Z+xkN
int mid = (l + r) / 2; Kz'GAm\
if (l == r) X5WA-s(?0
return; R|?n
if ((mid - l) >= THRESHOLD) g=:o 'W$@
mergeSort(data, temp, l, mid); e$LC
else Et6j6gmif
insertSort(data, l, mid - l + 1); rO87V!Cj
if ((r - mid) > THRESHOLD) /xn|d#4
mergeSort(data, temp, mid + 1, r); vJE=H9E
else _Sjj|j
insertSort(data, mid + 1, r - mid); <IrhR,@M,L
[s}W47N1
for (i = l; i <= mid; i++) { N"9^A^w8k
temp = data; fh#:j[R4e
} T;u;r@R/
for (j = 1; j <= r - mid; j++) { rCJ$Pl9R
temp[r - j + 1] = data[j + mid]; tP_.-//
} ?e%*q^~Cu
int a = temp[l]; FM]clC;X?
int b = temp[r]; 9Og
for (i = l, j = r, k = l; k <= r; k++) { JMAdsg/
if (a < b) { |s/)lA:9
data[k] = temp[i++]; +9/K|SB{$
a = temp; `;mgJD
} else { m mF0RNE
data[k] = temp[j--]; lhM5a
\
b = temp[j]; :ok.[q
} G[}v?RLI
} + 149 o2
}
c@A.jc
u?V}pYX
/** 8kK L=
* @param data nscnG5'{+
* @param l a>C;HO
* @param i "Lvk?k
)hx
*/ q:_:E*o
private void insertSort(int[] data, int start, int len) { xst-zfkH`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "%K'~"S#Q,
} ?C CQm
} l#uF%;GDX
} @de ZZ
} LYAGpcG
JbEEI(Q>g
堆排序: M._h=wX{}
PE.UNo>o
package org.rut.util.algorithm.support; :E{)yT
+:Xg7H*
import org.rut.util.algorithm.SortUtil; lP=,|xFra
;nl JD#
/** #@nPB.
* @author treeroot Uhu?G0>O
* @since 2006-2-2 &%v*%{|j
* @version 1.0 !UT!PX)
*/ hxdjmc-
public class HeapSort implements SortUtil.Sort{ {^
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$Ptl&0MN%
/* (non-Javadoc) DK2Wjr;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b+Sj\3fX
*/ I3Co
public void sort(int[] data) { A46dtFD{
MaxHeap h=new MaxHeap(); YS4"TOFw
h.init(data); Vuy%7H
for(int i=0;i h.remove(); +% <kcc3
System.arraycopy(h.queue,1,data,0,data.length); 0rX%z$D+@
} AW;xlY= g
6x5Q*^w
private static class MaxHeap{ J<NpA(@^
ZC$u8$+P
void init(int[] data){ nYC.zc*o x
this.queue=new int[data.length+1]; r:rPzq1
for(int i=0;i queue[++size]=data; Li8/GoJW-T
fixUp(size); )EYs+7/t
} R,7.o4Wt
} <bn|ni|c"
DZ`,QWuA
private int size=0; 8bw,dBN
Lcg1X3$G
private int[] queue; j!L7r'AV5
\k$cg~
public int get() { 1C=42ZZ&2
return queue[1]; ("f~gz<<
} \{(cz/]G/
>y}> 5kv
public void remove() { *?Oh%.HgF
SortUtil.swap(queue,1,size--); )MV `'i
fixDown(1); Q(WfWifu-|
} SA"4|#3>7
file://fixdown \HMuVg'Q
private void fixDown(int k) { 0/fwAp
int j; /^i_tLgb
while ((j = k << 1) <= size) { !!6@r|.
if (j < size %26amp;%26amp; queue[j] j++; Vs>e"czfm/
if (queue[k]>queue[j]) file://不用交换 ](+u'8
break; YYe<StyH
SortUtil.swap(queue,j,k); < A`srmS?
k = j; FIJ]`
} uYE"OUNWL
} <0/)v
J-
9
private void fixUp(int k) { 5:~ zlg
while (k > 1) { 3;//o<
int j = k >> 1; HS.eK#:N
if (queue[j]>queue[k]) + >tSO!}[
break; ;F2"gTQS
SortUtil.swap(queue,j,k); 7*+tG7I @
k = j; >)`*:_{
} h-03]M#8=
} h?QGJ^#8
lo7>$`Q
} n2opy8J#!
uY&t9L8
} =EHKu|rX~
_bCIVf`
SortUtil: pW<l9W
m*AiP]Qu
package org.rut.util.algorithm; 3|Y.+W
_:XX+3W7
import org.rut.util.algorithm.support.BubbleSort; $B )jSxSy
import org.rut.util.algorithm.support.HeapSort; ~. 5[
import org.rut.util.algorithm.support.ImprovedMergeSort; ;3=RM\
import org.rut.util.algorithm.support.ImprovedQuickSort; YQ-V^e6
import org.rut.util.algorithm.support.InsertSort; Jb!s#g
import org.rut.util.algorithm.support.MergeSort; F@xKL;'N74
import org.rut.util.algorithm.support.QuickSort; {>yy3(N
import org.rut.util.algorithm.support.SelectionSort; E**Hu 9
import org.rut.util.algorithm.support.ShellSort; w!l*!G
jq[Q>"f
/** d`xDv$QZ
* @author treeroot c*V/2"
5
* @since 2006-2-2 ?2S<D5MSb
* @version 1.0 Y-y}gc_L
*/ \2[
public class SortUtil { B5qlU4km&
public final static int INSERT = 1; Yx"~_xA/u
public final static int BUBBLE = 2; 5Noy~;
public final static int SELECTION = 3; 1{CVd m<9
public final static int SHELL = 4; m/=nz.
public final static int QUICK = 5; N:lfKI
public final static int IMPROVED_QUICK = 6; ]fM|cN8(zM
public final static int MERGE = 7; S1QMS
public final static int IMPROVED_MERGE = 8; Scrj%h%[
public final static int HEAP = 9; 'ITq\1z
;U* /\+*h
public static void sort(int[] data) { [dJ!JT/X{
sort(data, IMPROVED_QUICK); &hYgu3O
} P[3i!"O>
private static String[] name={ 42dv3bE"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G2`z?);1b
}; )~U1sW&t
i7Qb~RW
private static Sort[] impl=new Sort[]{ nfEbu4|
new InsertSort(), Geq]wv8
new BubbleSort(), %f]#P8VP
new SelectionSort(), *tXyd<_Hd
new ShellSort(), c*IrZm
new QuickSort(), vIV|y>;g
new ImprovedQuickSort(), u$T]A8e
new MergeSort(), `!]|lI!GW
new ImprovedMergeSort(), c1f"z1Z
new HeapSort() ]+D@E2E
}; Rc1j^S;>
UoT`/.
public static String toString(int algorithm){ ]oGd,v X
return name[algorithm-1]; @c|=onx5
} t1 3V>9to
YSD G!
public static void sort(int[] data, int algorithm) { &4?&tGi
impl[algorithm-1].sort(data); s)-oCT$[
} h^3gYL7O6
V*?cMJ_G
public static interface Sort { eRMN=qP.q
public void sort(int[] data); @A,8>0+
} d/d)MoaJ*t
d( v"{N}
public static void swap(int[] data, int i, int j) { Dz }i-tw+
int temp = data; '@{:FrG*U
data = data[j]; qb"S
data[j] = temp; 0Ui.nz j
} }_+XN"}C
} CNNqS^ct