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。 }9jy)gF*e
插入排序: D guAeK
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package org.rut.util.algorithm.support; w$pBACX
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import org.rut.util.algorithm.SortUtil; 0IxXhu6v
/** ']>@vo4kK{
* @author treeroot JhIgqW2
* @since 2006-2-2 S's\M5
* @version 1.0 [|e7oNT(Q
*/ {p+7QlgK
public class InsertSort implements SortUtil.Sort{ Lylw('zZ
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/* (non-Javadoc) *s<FE F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !|hv49!H
*/ 2?#IwT'
public void sort(int[] data) { _yumUk-QW
int temp; $#1i@dI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <S%M*j
} q@H?ohIH
} 3S ,D~L^
} d0eMDIm3R\
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} L+bU~N,+A
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冒泡排序: @u#Tx%
._Wm%'uX
package org.rut.util.algorithm.support; XX#YiG4|J
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import org.rut.util.algorithm.SortUtil; Jn-iIl
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/** 5Jlz$]f
* @author treeroot UJ<eF/KSmG
* @since 2006-2-2 ~Qeyh^wo
* @version 1.0 kTt;3 Ia
*/ OpA
public class BubbleSort implements SortUtil.Sort{ q3#07o_dV
kK>PFk(
/* (non-Javadoc) P'xq+Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ojni+} >_
*/ 9;NR
public void sort(int[] data) { p=V (_
int temp; 43^%f-J5
for(int i=0;i for(int j=data.length-1;j>i;j--){ eJIBkFW/3y
if(data[j] SortUtil.swap(data,j,j-1); |]w0ytL>(2
} FE,&_J"
} $_%yr
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} MS)(\&N
} *2Il{KOA^
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} Ol"*(ea-TX
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选择排序: bzz=8n
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package org.rut.util.algorithm.support; !7]4sXL{
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import org.rut.util.algorithm.SortUtil; ]W-l1
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/** nJ<h}*[
* @author treeroot >r6`bh
[4
* @since 2006-2-2 Zu951+&`
* @version 1.0 (hEqh
nnm`
*/ g-q~0
public class SelectionSort implements SortUtil.Sort { ,dOd3y'y
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/* Pfj{TT.#L
* (non-Javadoc) ~&8ag`
* pn<M`,F~q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wt*&_+ae
*/ D7T(B=S6
public void sort(int[] data) { bX23F?
int temp; \#Ez["mD
for (int i = 0; i < data.length; i++) { ),1MR=
int lowIndex = i; 7+ QD=j-
for (int j = data.length - 1; j > i; j--) { dOh`F~
Y)e
if (data[j] < data[lowIndex]) { pHSq,XP-
lowIndex = j; ()i8 Qepo}
} ;"l>HL:^
} t&MJSFkiA
SortUtil.swap(data,i,lowIndex); Z<T%:F
} Ke@zS9
} Ju4={^#
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} cPZD#";f
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Shell排序: :yO.Te
F
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package org.rut.util.algorithm.support; ^dj
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import org.rut.util.algorithm.SortUtil; eAR]~
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/** H*BzwbM?
* @author treeroot 8DHohhN
* @since 2006-2-2 AC:cV='
* @version 1.0 !l-^JPb
*/ ]"Z*Hq
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public class ShellSort implements SortUtil.Sort{ +MU|XT_5|6
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/* (non-Javadoc) ;dgxeP;mp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #
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*/ g(){wCI
public void sort(int[] data) { |d =1|C%,
for(int i=data.length/2;i>2;i/=2){ o\6A]T=R
for(int j=0;j insertSort(data,j,i); mv_N ns
} ,*ZdMw!
} L>VZ-j
insertSort(data,0,1); DA;,)A&=Q
} "5Orj*{
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/** s8 S[w
* @param data jSNUU.lur
* @param j szW_cjS
* @param i b /65Q&g'
*/ (T+fO}0
private void insertSort(int[] data, int start, int inc) { wn2+4> |~p
int temp; xrb %-vT
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Rrh?0qWs
} \l)<NZ\
} ODa+s>a`^
} [^sv.
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} k1Cx~Q)XC
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快速排序: k=">2!O/
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package org.rut.util.algorithm.support; baJ(Iy$XT
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import org.rut.util.algorithm.SortUtil; tg%s#lLeH
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/** T1'8<pJ^
* @author treeroot *9V;;bY#
* @since 2006-2-2 ~gU.z6us
* @version 1.0 >b9nc\~
*/ ]*b}^PQM^
public class QuickSort implements SortUtil.Sort{ )Lt|]|1B{
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/* (non-Javadoc) 1 ?X(q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S
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*/ 6;"^Id
public void sort(int[] data) { ;\~{7 9c
quickSort(data,0,data.length-1); TTB1}j+V6
} 8/ lv, m#
private void quickSort(int[] data,int i,int j){ "]*16t%Z%x
int pivotIndex=(i+j)/2; 2E]SKpJ
file://swap EAiE@r>4
SortUtil.swap(data,pivotIndex,j); sbnNk(XINQ
l-|hvv5g
int k=partition(data,i-1,j,data[j]); oS3}xT "
U
SortUtil.swap(data,k,j); \Y;LbB8D
if((k-i)>1) quickSort(data,i,k-1); s>y=-7:N
if((j-k)>1) quickSort(data,k+1,j); AL*P2\8
%J)n#\
} d#~^)r
/** Oa7x(wS
* @param data Ut"~I)S{LT
* @param i -)
* @param j CZE!rpl
* @return v,6
*/ 0V{a{>+
private int partition(int[] data, int l, int r,int pivot) { +bC-_xGuh
do{ !=%E&e]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wkSIQL
SortUtil.swap(data,l,r); XP#j9CF#.
} 7kDX_,i
while(l SortUtil.swap(data,l,r); Ph[P$: 9
return l; :0K[fBa
} fa#xEWaFr
b(@[Y(_R
} F!v`._]
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改进后的快速排序: o5~o Rmsr
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package org.rut.util.algorithm.support; F3k]*pk8w
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import org.rut.util.algorithm.SortUtil; NyHHK8>
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/** %C&HR2
* @author treeroot `LD#fg*
* @since 2006-2-2 8S;]]*cD~
* @version 1.0 |a!AgvNF
*/ P_:A%T
public class ImprovedQuickSort implements SortUtil.Sort { l!Bc0
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private static int MAX_STACK_SIZE=4096; w[g(8#*
private static int THRESHOLD=10; yO@KjCv"
/* (non-Javadoc) m~KGB"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w]n ,`r^
*/ ,SEC~)L
public void sort(int[] data) { G/Ll4
:
int[] stack=new int[MAX_STACK_SIZE]; B+e$S%HV
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int top=-1; 3&*_5<t\X
int pivot; "YIrqk
int pivotIndex,l,r; \;"$Z9W
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stack[++top]=0; R <kh3T
stack[++top]=data.length-1; %<^B\|d'?
7D5;lM[_
while(top>0){ v0pyyUqS
int j=stack[top--]; pz'l9Gp;@
int i=stack[top--]; \etuIFQ#U
@8[3]<
pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; 8)(<U/
Xy_ <Yqx}
SortUtil.swap(data,pivotIndex,j); r >%reS
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file://partition gQ]WNJ~>
l=i-1; P( z#Wk
r=j; 8;'fWV?
U
do{ Z<j(ZVO
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gO
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SortUtil.swap(data,l,r); li>`9qCmI
} 6.]x@=Wm
while(l SortUtil.swap(data,l,r); XhF7%KR
SortUtil.swap(data,l,j); [c6I/U=-
yc|j]?
if((l-i)>THRESHOLD){ eUiJl6^x
stack[++top]=i; )ZkQWiP-
stack[++top]=l-1; ["'0vQ
} Q~/TqG
U
if((j-l)>THRESHOLD){ P\"|b\O1
stack[++top]=l+1; Kv**(~FNnH
stack[++top]=j; WU}?8\?U%
} \Qa6mt2h
^QX3p,Y
} WM8
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file://new InsertSort().sort(data); W'2a1E
insertSort(data); $6p_`LD0
} n0o'ns
/** \k6Ho?PL
* @param data 99T_y`df
*/ nxzdg5A(w
private void insertSort(int[] data) { C^uH]WO
int temp; P#`Mg@.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); < 8yv(
} +-=o16*{ !
} p h[
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} z"`q-R }m
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} D;@*
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归并排序:
T~I5W=y
zB 6u%u WR
package org.rut.util.algorithm.support; }P[xZ_S1
*W()|-[V3
import org.rut.util.algorithm.SortUtil; :*GLLjS;
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/** E;l|I
A/7
* @author treeroot [qhQj\cK
* @since 2006-2-2 +J`EBoIo
* @version 1.0 \Y[
*/ $4yv)6G
public class MergeSort implements SortUtil.Sort{ v?Q|;<
} $:uN
/* (non-Javadoc) OLAwRha
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2t h\%
*/ n[zP}YRr
public void sort(int[] data) { k(Z+(Y'{q~
int[] temp=new int[data.length]; /|{Yot
e
mergeSort(data,temp,0,data.length-1); y=!"++T]B<
} p1B~:9y9X
]<z4p'F1%
private void mergeSort(int[] data,int[] temp,int l,int r){ [da,SM
int mid=(l+r)/2; ~.4-\M6[
if(l==r) return ; %j],6wW5J
mergeSort(data,temp,l,mid); L%,tc~)A
mergeSort(data,temp,mid+1,r); $+` YP
for(int i=l;i<=r;i++){ RhM]OJd'
temp=data; !mFx= +
} imcq
H
int i1=l; cU\Er{
k
int i2=mid+1; <{rRcFR
for(int cur=l;cur<=r;cur++){
t#s?:
if(i1==mid+1) Eq>3|(UT
data[cur]=temp[i2++]; w_30g6tA
else if(i2>r) cr!6qv1
data[cur]=temp[i1++]; =$`xis\
else if(temp[i1] data[cur]=temp[i1++]; _akC^hT
else f&+=eUp
data[cur]=temp[i2++]; K-Bf=7F,
} J(*QtF
} +QcgLq
w,L P M+
} 5m,{?M`
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az
改进后的归并排序: neW_mu;~Z
8y;W+I(71
package org.rut.util.algorithm.support; <1tFwC|4BJ
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import org.rut.util.algorithm.SortUtil; A|sTnhp~
i_OoR"J%
/** fm2,Mx6
* @author treeroot 5>.)7D%
* @since 2006-2-2 [uxhdR`T
* @version 1.0 wT?.Mte
*/ G)28#aH
public class ImprovedMergeSort implements SortUtil.Sort { $YvT*
T$_
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private static final int THRESHOLD = 10; G%N/]]ll
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/* /E'c y
* (non-Javadoc) h?wNmLre
* ]=v_u9;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m x@F^
*/ y=y=W5#;77
public void sort(int[] data) { FoM4QO
int[] temp=new int[data.length]; \tFg10
mergeSort(data,temp,0,data.length-1); xao'L
} \-kX-Tq
=w HU*mK
private void mergeSort(int[] data, int[] temp, int l, int r) { 2XJn3wPi
int i, j, k; fsa
int mid = (l + r) / 2; l1^/Q~u
if (l == r) XWvT(+J
return; 9tmYrhb$
if ((mid - l) >= THRESHOLD) #yZZ$XO k
mergeSort(data, temp, l, mid); ?c)PBJ+]
else V6l*!R
insertSort(data, l, mid - l + 1); Ojj:YLlY>
if ((r - mid) > THRESHOLD) 0'!v-`.
mergeSort(data, temp, mid + 1, r); m#SDB6l
else hQ&S*f&='
insertSort(data, mid + 1, r - mid); M0`nr}g
$3BCA)5:
for (i = l; i <= mid; i++) { R
}M'D15
temp = data; =jvM$
} /sY(/ JE
for (j = 1; j <= r - mid; j++) { WrhC
q6
temp[r - j + 1] = data[j + mid]; +}c
'4hRv
} 4,L(
int a = temp[l]; IVD1mk
int b = temp[r]; Q!/<=95E
for (i = l, j = r, k = l; k <= r; k++) { dzDh V{
if (a < b) { I}/o`oc
data[k] = temp[i++]; Gv[W)+3f
a = temp; 'Im7^!-d
} else { PbOLN$hP
data[k] = temp[j--]; 9`}Wp2
b = temp[j]; [\CQ_qs|
} Ms5m.lX
} 6U;pYWht
} X1U7$/t
=jdO2MgSg*
/** ^,zE Nqg7
* @param data qq}EXq ^
* @param l IdTeue
* @param i 4kGA`XhS*
*/ n k]tq3.[
private void insertSort(int[] data, int start, int len) { v0!>":
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >B$ZKE
} f !t2a//
} ty]JUvR@
} \Ku=a{Ne
} bHcb+TR3
b u%p,u!
堆排序: QC0^G,9.
T[M?:~
package org.rut.util.algorithm.support; nt\6o?W
"~x\bSY
import org.rut.util.algorithm.SortUtil; ]c{Zh?0
_3<J!$]&p
/** lbrob' '+
* @author treeroot ^
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* @since 2006-2-2 u`Djle
* @version 1.0 VKy:e.
*/ B`OggdE
public class HeapSort implements SortUtil.Sort{ 9Ue3
%?~c
1 GUF,A+_O
/* (non-Javadoc) r$=MBeT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _F
xq
*/ GutH}Kz"&
public void sort(int[] data) { ,p\^n`A32
MaxHeap h=new MaxHeap(); Z!=/[,b
h.init(data); P\;lH"9
for(int i=0;i h.remove(); B&A4-w v
System.arraycopy(h.queue,1,data,0,data.length); {:40Jf
} qF=D,Dlz
[oOZ6\?HB
private static class MaxHeap{ P(G$@},W
B9|!8V
void init(int[] data){ L*bUjR,C
this.queue=new int[data.length+1]; <lZyUd
for(int i=0;i queue[++size]=data; AbUPJF"F
fixUp(size); >FPE%X0+
} |Q:$G!/
} qgrRH'
I_.(&hMn
private int size=0; x{<WJ|'B
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private int[] queue; I z~#G6]M
a`(6hL3IT
public int get() { Woa5Ov!n0
return queue[1]; x3>K{
} CF9a~^+%
b!SGQv(^M
public void remove() { 6NJ"ty9Bp
SortUtil.swap(queue,1,size--); |$Dt6{h
fixDown(1); 5%D:wS1
} h>= e<H?f
file://fixdown bW<_K9"
private void fixDown(int k) { [CBA Lj5
int j; yXS ~PG
while ((j = k << 1) <= size) { k\|G%0Jw
if (j < size %26amp;%26amp; queue[j] j++; <aa#OX
if (queue[k]>queue[j]) file://不用交换 Nkn0G_
break; 4q[C'
J
SortUtil.swap(queue,j,k); NuI9"I/
k = j; uSbOGhP
} 9Am&G
} w/KHS#~
private void fixUp(int k) { 1g9Qvz3
while (k > 1) { W%b<(T;
int j = k >> 1; <ro0}%-z>M
if (queue[j]>queue[k]) qc~6F'?R
break; 8#'<SB
SortUtil.swap(queue,j,k); hXM8`iFW5
k = j; -h^FSW($-R
} )v;>6(
} ('Wo#3b$
)u ]J`.OA
} 4;Z`u.1
ZH/^``[.
} w{)*'8oCB
f!ehq\K1k
SortUtil: 3 8pw
m9Gyjr'L
package org.rut.util.algorithm; soW.
7&XU]I
import org.rut.util.algorithm.support.BubbleSort; %!%3jo0t
import org.rut.util.algorithm.support.HeapSort; +oBf\!{cW
import org.rut.util.algorithm.support.ImprovedMergeSort; r4dG83qg
import org.rut.util.algorithm.support.ImprovedQuickSort; "RuJlp
import org.rut.util.algorithm.support.InsertSort; i;lzFu)G
import org.rut.util.algorithm.support.MergeSort; |vz<FR6
import org.rut.util.algorithm.support.QuickSort; _IOeO
import org.rut.util.algorithm.support.SelectionSort; &+6XdhX
import org.rut.util.algorithm.support.ShellSort; \c/jp5=}
k#R}^Q
/** }M?GqA=
* @author treeroot sY7:Lzs.,
* @since 2006-2-2 D/:~#)
* @version 1.0 Z!G_" 3
*/ rJ ?Y~Q
public class SortUtil { mm/U9hbp%
public final static int INSERT = 1; ?;>s<
public final static int BUBBLE = 2; rtv\Pf|
public final static int SELECTION = 3; xb0hJ~e
public final static int SHELL = 4; ^tsIgK^9H
public final static int QUICK = 5; vi@a87w>
public final static int IMPROVED_QUICK = 6; Ttn=VX{
\
public final static int MERGE = 7; yxQxc5/X)
public final static int IMPROVED_MERGE = 8; #9EpQc[4
public final static int HEAP = 9; GV6!`@<
l*uNi47|
public static void sort(int[] data) { qd~)Ya1
sort(data, IMPROVED_QUICK); \.myLkm
} b')CGqbbmT
private static String[] name={ H)tYxW
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <%hSBDG!x
};
f<9H#S:
#!rng]p
private static Sort[] impl=new Sort[]{ 8U0y86q>)E
new InsertSort(), iU9de
new BubbleSort(), OgyETSN8C
new SelectionSort(), d?WA}VFU
new ShellSort(), dMw7Lp&
new QuickSort(), `B) ~
new ImprovedQuickSort(), XD{U5.z>y
new MergeSort(), 1""9+4
new ImprovedMergeSort(), !tCw)cou
new HeapSort() 6xr$
}; T9KzVxHp5
'[I_Iu#,
public static String toString(int algorithm){ 8HX(1nNj}
return name[algorithm-1]; )+wBS3BC
} 4LtFv)i
YoGnk^$
public static void sort(int[] data, int algorithm) { `j(\9j ok
impl[algorithm-1].sort(data); QUb#;L@okn
} n%I%Kbw
!1C3{
public static interface Sort { s6OnHX\it7
public void sort(int[] data); *6e`km
} JTNQz
)s,L:{<
public static void swap(int[] data, int i, int j) { !~04^(
int temp = data; p&B98c
data = data[j]; &zlwV"W
data[j] = temp; UA>~xJp=
} 6/hY[a!
} !Y!Cv %