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。 o=5uM
插入排序: um4zLsd#v
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package org.rut.util.algorithm.support; Q^;\!$:M
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import org.rut.util.algorithm.SortUtil; '4S@:.D`
/** ?-p aM5Q+
* @author treeroot "K=)J'/n
* @since 2006-2-2 c_=zd6 b$S
* @version 1.0 rW .0_*
*/ 6:X\vw
public class InsertSort implements SortUtil.Sort{ l"g%vS,;`
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/* (non-Javadoc) e 2&i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f)fw87UPc
*/ alD|-{Bf
public void sort(int[] data) { >}tG^ )os
int temp; 66;O 3g'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R9HS%O6b6
} e/%YruzS
} }tq9 /\
} ;Q 6e&Ips/
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} f4^_FK&
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冒泡排序: IKj1{nZvDc
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package org.rut.util.algorithm.support; l0o_C#"<S
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import org.rut.util.algorithm.SortUtil; }z:=b8}
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/** M#,+p8
* @author treeroot LLN^^>5|l
* @since 2006-2-2 msJn;(Pn
* @version 1.0 N_}Im>;!
*/ !I$RE?7eY
public class BubbleSort implements SortUtil.Sort{ ~|]\.^B
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/* (non-Javadoc) Ee| y[y,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $^GnY7$!>
*/ 8`<GplO
public void sort(int[] data) { :RG6gvz
int temp; p8bTR!rvz
for(int i=0;i for(int j=data.length-1;j>i;j--){ TR7TF]itb
if(data[j] SortUtil.swap(data,j,j-1); $l0w {m!P
} l0)6[yXK
} ZmF32Ir
} wEqCuhZ
} 6f1Y:qK'@
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} >@W#@W*I@
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选择排序: '!GI:U+g
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package org.rut.util.algorithm.support; kv2:rmv
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import org.rut.util.algorithm.SortUtil; R'U(]&e.j
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/** m\Nc}P_"p
* @author treeroot =uEhxsj)S
* @since 2006-2-2 g Q^]/X
* @version 1.0 b?,y%D)'
*/ AG%aH=TKp
public class SelectionSort implements SortUtil.Sort { K>~l6
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/* > ^}z
* (non-Javadoc)
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* Nq3P?I(<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m5*RB1
*/ *a4eL [
public void sort(int[] data) { U^I'X7`r
int temp; C7:Ry)8'I
for (int i = 0; i < data.length; i++) { 0>Nq$/!
int lowIndex = i; Vy VC#AK,
for (int j = data.length - 1; j > i; j--) { /PlsF
if (data[j] < data[lowIndex]) { N\$6R-L
lowIndex = j; nXjUTSGa)
} `MS=/x E
} ;o=mL_[
SortUtil.swap(data,i,lowIndex); Qw+">
} I_Qnq4Sk(
} 4)z](e$
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} ?*0kQo'
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Shell排序: C_/oORvK
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package org.rut.util.algorithm.support; P^ VNB
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import org.rut.util.algorithm.SortUtil; QO%K`}Q}
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/** WF7RMQ51j
* @author treeroot J0k~%
* @since 2006-2-2 kp|reKM/
* @version 1.0 =W=%!A\g
*/ #</yX5!V
public class ShellSort implements SortUtil.Sort{ xUUp?]9y
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/* (non-Javadoc) Z^'; xn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ K.SHY!U}
public void sort(int[] data) { jEadVM9
for(int i=data.length/2;i>2;i/=2){ [0Sd +{Q
for(int j=0;j insertSort(data,j,i); i`X{pEKP+
} [iD!!{6+
} SF7Kb `>Y
insertSort(data,0,1); KK}&4^q
} ~[{| s')
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/** &2DW
* @param data %9K@`v-
* @param j ur|2FS7
* @param i D+U^ pl-
*/ iDA`pemmi&
private void insertSort(int[] data, int start, int inc) { h
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int temp; AMr 9rB d
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z,z^[Jz
} sYL+;(#t
} Tr8+E;;
} [3s~Z8
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} Z-p_hN b
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快速排序: @AwH?7(b
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package org.rut.util.algorithm.support; Pz?O_@Ln
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import org.rut.util.algorithm.SortUtil; @RjLDj+)S
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/** ci!c7 ,'c
* @author treeroot IpWl;i`__
* @since 2006-2-2 C-Mop,w
* @version 1.0 xc!"?&\*
*/ \<5xf<{
public class QuickSort implements SortUtil.Sort{ o{qbbJBC
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/* (non-Javadoc) B\Uj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gP}M\3-O
*/ +mY(6|1
public void sort(int[] data) { p(Sfw>t(
quickSort(data,0,data.length-1); lr1i DwZV
} [W2k#-%G
private void quickSort(int[] data,int i,int j){ UwLa9Dn^
int pivotIndex=(i+j)/2; ;3w W)gL1
file://swap yk=H@`~!
SortUtil.swap(data,pivotIndex,j); /q=<OEC
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int k=partition(data,i-1,j,data[j]); qU"+0t4
SortUtil.swap(data,k,j); d-Sm<XHu.
if((k-i)>1) quickSort(data,i,k-1); j8lbn |.
if((j-k)>1) quickSort(data,k+1,j); js{ RaR=
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} (qaY,>je]D
/** wm}i+ApK
* @param data A >e%rx
* @param i 4 1Ru@
* @param j N-^\e)ln
* @return qZ4DO*%b3
*/ H)5]K9D
private int partition(int[] data, int l, int r,int pivot) { )T^hyi$
do{ `8L7pbS%,Q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rA9"CN
SortUtil.swap(data,l,r); |')Z;
} z2r{AQ.&
while(l SortUtil.swap(data,l,r); kWgxswl7H
return l; [j5L}e!T
} Uu
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} G,J$lTX
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改进后的快速排序: RsE+\)
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package org.rut.util.algorithm.support; K\uR=L7
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import org.rut.util.algorithm.SortUtil; P?>p+dM
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/** *b> ~L
* @author treeroot X@TQD
* @since 2006-2-2 )s!x)< d;
* @version 1.0 ]]Wa.P~]O
*/ =|H/[",gg
public class ImprovedQuickSort implements SortUtil.Sort { $} ~:x_[
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private static int MAX_STACK_SIZE=4096; I&4|T<j
private static int THRESHOLD=10; v,kedKcxv'
/* (non-Javadoc) }v`5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BwbvZfV|
*/ n]|[|Rf1
public void sort(int[] data) { 4\t9(_
int[] stack=new int[MAX_STACK_SIZE]; daaurT
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int top=-1; v-OaH81&R
int pivot; `a]
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int pivotIndex,l,r; `/"TYR%
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stack[++top]=0; 75%!R
stack[++top]=data.length-1; d<xBI,g
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while(top>0){ 9kTU|py
int j=stack[top--]; !}U&%2<69
int i=stack[top--]; F e8xOo6
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pivotIndex=(i+j)/2; >*EcX 3
pivot=data[pivotIndex]; -v`;^X
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SortUtil.swap(data,pivotIndex,j); k{uc%6s
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file://partition s2q#D.f
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r=j; +[:}<^p?cG
do{ ZVViu4]?y
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^*RmT
SortUtil.swap(data,l,r); q_JES4ofx
} Y8(g8RN
while(l SortUtil.swap(data,l,r); {~ VgXkjsC
SortUtil.swap(data,l,j); >!?u8^C
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if((l-i)>THRESHOLD){ }]kzj0m
stack[++top]=i; T~_+\w
stack[++top]=l-1; ^[!LU
} cSQvP.
if((j-l)>THRESHOLD){ ji:JLvf]%
stack[++top]=l+1; >{V]q*[/;Q
stack[++top]=j; S&FMFXF@
} ` O-$qT,_
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} ]QRhTz
file://new InsertSort().sort(data); d-lC|5U%
insertSort(data); p^^E(<2
} a~WtW]
/** o^biO!4,
* @param data 0fwo8NgX
*/ (eFHMRMv~
private void insertSort(int[] data) { 5_#wOz0u$
int temp; Y ~xcJH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c=h{^![$
} l\JoWL
} )FYz*:f>&
} NbSkauF~b
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} =T!iM2
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归并排序: 4cl}ouG
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package org.rut.util.algorithm.support; b1R%JY7/S
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import org.rut.util.algorithm.SortUtil; X*/jna"*
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/** gM '_1zs
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* @author treeroot ^F/N-!}q
* @since 2006-2-2 +<(N]w*
* @version 1.0 D`V03}\-
*/ !D!Q]M5oU
public class MergeSort implements SortUtil.Sort{ eE '\h
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/* (non-Javadoc) M1-n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y7{IF X
*/ @/g%l1$`
public void sort(int[] data) { aTxss:7]
int[] temp=new int[data.length]; H_un3x1
mergeSort(data,temp,0,data.length-1); B~G?&"]
} nZ0-
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private void mergeSort(int[] data,int[] temp,int l,int r){ )k&<D*5s
int mid=(l+r)/2; \GO^2&g(
if(l==r) return ; S=*rWh8)%<
mergeSort(data,temp,l,mid); g:7S/L0]
mergeSort(data,temp,mid+1,r); <-D>^p9
for(int i=l;i<=r;i++){ OTY9Q
temp=data; Usx8
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} xrs?"]M[
int i1=l; 9LI#&\lba
int i2=mid+1; +mIO*UQi
for(int cur=l;cur<=r;cur++){ zW+X5yK
if(i1==mid+1) m0DD|7}+
data[cur]=temp[i2++]; GWsvN&nr
else if(i2>r) ycz6-kEp
data[cur]=temp[i1++]; d="Oge8
else if(temp[i1] data[cur]=temp[i1++]; Dp3&@M"^yY
else <l opk('7
data[cur]=temp[i2++]; ~oWCTj-
} }6*+>?
} o$)pJ#";F
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} j^-E,YMC
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改进后的归并排序: >4
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Uus%1hC%a
package org.rut.util.algorithm.support; ?%-VSL>$w=
P MV;A{T
import org.rut.util.algorithm.SortUtil; .fY1?$*6c
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/** NCR4n_
* @author treeroot 7Ko<,Kp2b
* @since 2006-2-2 gG*]|>M JI
* @version 1.0 +i HZ*
*/ z~f Zg6
public class ImprovedMergeSort implements SortUtil.Sort { TwJiYXHw?
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private static final int THRESHOLD = 10; a|?&
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/* dCc"Qr[k
* (non-Javadoc) ur7sf$
* ?-C=_eZJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g?&_5)&
*/ =;Ap+}
public void sort(int[] data) { gT8Q:8f:
int[] temp=new int[data.length]; z=%&?V
mergeSort(data,temp,0,data.length-1); *'[8FZ|dQ
} {BPNb{dBKr
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private void mergeSort(int[] data, int[] temp, int l, int r) { Lu?MRF
f
int i, j, k; }x!=F<Q!r
int mid = (l + r) / 2; ]z3!hgTj
if (l == r) Ck.LsL-
return; WRrCrXP
if ((mid - l) >= THRESHOLD) s2F<H#
mergeSort(data, temp, l, mid); %:Mi6sR|
else y.vYT{^
insertSort(data, l, mid - l + 1); M~/7thP{
if ((r - mid) > THRESHOLD) R<(kiD\?]
mergeSort(data, temp, mid + 1, r); i82sMN1jl7
else E0HXB1"
insertSort(data, mid + 1, r - mid); }9=X*'BO
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for (i = l; i <= mid; i++) { <5@VFRjc
temp = data; 8G3CQ]G
} RBuerap
for (j = 1; j <= r - mid; j++) { ]+4QsoFNt
temp[r - j + 1] = data[j + mid]; VgGMlDl
} 0APh=Alq
int a = temp[l]; p6S{OUiG
int b = temp[r]; |y%pJdPk=
for (i = l, j = r, k = l; k <= r; k++) { W3Gg<!*Uo
if (a < b) { zy8Z68%E`*
data[k] = temp[i++]; fL$U%I3
a = temp; 8`g@
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} else { w1;:B%!H
data[k] = temp[j--]; *~Y$8!ad
b = temp[j]; z3-A2#c
} j}s<Pn%4
} : ;l9to
} yBKEw(1
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/** ~V34j:
* @param data _L8|ZV./
* @param l z3Id8G&>
* @param i =#=<%HPT
*/ y-#{v.|L
private void insertSort(int[] data, int start, int len) { k]>1@t
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); WzinEo{f
} "R< c
} 4C:-1gu7
} l 7T@<V
} j(xVbUa
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堆排序: I}^Q u0ub
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package org.rut.util.algorithm.support; xgp 6lO [
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import org.rut.util.algorithm.SortUtil; ~W/|RP7S
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/** wqnrN6$jf
* @author treeroot
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* @since 2006-2-2 \:mZ)f3K=
* @version 1.0 wn1` 9
*/ qX9x#92
public class HeapSort implements SortUtil.Sort{ ~SzHIVj:6
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/* (non-Javadoc) {u}d`%_.M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =# /BCL7
*/ u=QG%O#B
public void sort(int[] data) { tRtoA5
MaxHeap h=new MaxHeap(); C}'Tmi
h.init(data); {D{'
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for(int i=0;i h.remove(); 18eB\4NlD
System.arraycopy(h.queue,1,data,0,data.length); 9B)<7JJX!J
} 0 k(su
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private static class MaxHeap{ q 3nF\Me0
l/i7<