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。 (@KoqwVWc
插入排序: m1hW<
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package org.rut.util.algorithm.support; C@y}*XV[b
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import org.rut.util.algorithm.SortUtil; '9*5-iO
/** QM[A;WBr7
* @author treeroot 3C rQBIj1
* @since 2006-2-2 q:Y6fbt<7
* @version 1.0 CYPazOfj
*/ (2 T#/$
public class InsertSort implements SortUtil.Sort{ t_I\P.aMA
1jH7<%y
/* (non-Javadoc) 6WE&((r^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @%EE0)IA
*/ XOysgX0g
public void sort(int[] data) { 5!'R'x5e
int temp; HDF!`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o%Be0~n'
} ]g;^w?9h
} J+)'-OFt0
} OuOk=
k]SAJ~bS|
} Lh8bQH
=zeFK_S!
冒泡排序: )%iRZ\`f
F>~ xzc
package org.rut.util.algorithm.support; JkSdLj
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Trh%
import org.rut.util.algorithm.SortUtil; -ajM5S=d*
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/** dSOlD/c
* @author treeroot Fw_
(q!
* @since 2006-2-2 KqM! !
* @version 1.0 M11"<3]D
*/ 4meidKw]
public class BubbleSort implements SortUtil.Sort{ ] vC=.&]
1Yc%0L(
/* (non-Javadoc) ds*m6#1b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O^.%C`*
*/ Xh.+pJl,*
public void sort(int[] data) { $uEJn&n7}
int temp; Xw7{R
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'oz hz2s
if(data[j] SortUtil.swap(data,j,j-1); ^ckj3Y#;
} hq/J6 M
} )t|^Nuj8
} )n\*ht7
} SU?wFCGT%
i(Ip(n
} p=!#],[
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选择排序: aB6Ye/Io
1<xcMn0et
package org.rut.util.algorithm.support; [096CK
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import org.rut.util.algorithm.SortUtil; ;yF[2P ;
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/** NH'1rt(w
* @author treeroot 9<xTu>7J
* @since 2006-2-2 BG'6;64kx6
* @version 1.0 8AT;8I<K
*/ G/v|!}?wG
public class SelectionSort implements SortUtil.Sort { ds-
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/* _h0-
* (non-Javadoc) <"*"1(wN
* ZhH+D`9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mfXD1]<.
*/ X?tj$
public void sort(int[] data) { o_iEkn
int temp; +"'F Be
for (int i = 0; i < data.length; i++) { :3JCvrq
int lowIndex = i; |q3f]T&+>{
for (int j = data.length - 1; j > i; j--) { p3g4p
if (data[j] < data[lowIndex]) { ]#F q>E
lowIndex = j; l`SK*Bm~<
} ./$
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} q1 H=/[a
SortUtil.swap(data,i,lowIndex); 53B.2
4Tm
} I0!j<G
} EPc!p>
r)V Lf#3B
} XZ}de%U1
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Shell排序: ylk{!
cL#-*_(
package org.rut.util.algorithm.support; _3|6ZO
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import org.rut.util.algorithm.SortUtil; aiYo8+{!#
d!o.ASL{
/** _*Pfp+if
* @author treeroot Q/p(#/y#b
* @since 2006-2-2 IWQ&6SDW$z
* @version 1.0 1Yud~[c
*/ cn$5:%IK
public class ShellSort implements SortUtil.Sort{ ji}#MBac
C1 W>/?XC
/* (non-Javadoc) d7E7f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !~WZ_z
*/ *2`:VFEV
public void sort(int[] data) { ^%;" [r
for(int i=data.length/2;i>2;i/=2){ ?4,@,
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for(int j=0;j insertSort(data,j,i); 5? Wg%@
} s}wO7Df=+
} :AZp}
insertSort(data,0,1); rsWQHHkO
} )]73S@P(=
TZ'aNcGg
/** ^]VcxKU J
* @param data h6g:(3t6m
* @param j L/BHexOB
* @param i !}ilN 1>
*/ P@C
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private void insertSort(int[] data, int start, int inc) { `mrCu>7
int temp; |"Z-7@/k$i
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0C]4~F x~
} o5P&JBX<
} %VWp&a8
} zO%w_7w
:<|Z.4}kJb
} .:8[wI_f
mH)OB?+lq
快速排序: hcyn
}wfI4?}j}
package org.rut.util.algorithm.support; V{0%xz #
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import org.rut.util.algorithm.SortUtil; UxeL
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/** [m\,+lG?)j
* @author treeroot 8'KMxR
* @since 2006-2-2 iX{H,-C
* @version 1.0 fWj@e"G
*/ zrrz<dW
public class QuickSort implements SortUtil.Sort{ :9`qogF>
MI\]IQU
/* (non-Javadoc) Ir/:d]N*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PK+ x6]x
*/ &U&Zo@ot"x
public void sort(int[] data) {
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quickSort(data,0,data.length-1); ailG./I+
} +#~O'r]%GG
private void quickSort(int[] data,int i,int j){ j{)~QD ?
int pivotIndex=(i+j)/2; jB!W2~Z
file://swap ZOu R"9]
SortUtil.swap(data,pivotIndex,j); eQ<xp A
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int k=partition(data,i-1,j,data[j]); HyEa_9
SortUtil.swap(data,k,j); "R23Pi
if((k-i)>1) quickSort(data,i,k-1); i
j/o;_
if((j-k)>1) quickSort(data,k+1,j); Aq"PG}Ic
3za`>bUN
} j7}lF?cJ2
/** MKC$;>i
* @param data V\AK6U@r^
* @param i 0~]QIdu{AR
* @param j V9T
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* @return 1i3V!!r
*/ &hI>L
private int partition(int[] data, int l, int r,int pivot) { 333u]
do{ yp p 4L|R
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); =&2$/YX0D
} &2{]hRM
while(l SortUtil.swap(data,l,r); :_Fxy5}
return l; Hd0Xx}3&
} Vv7PCaq
Xhse~=qA
} P>wZ~Hjk
#h N.=~
改进后的快速排序: 2:'lZQ
BC({ EE~R)
package org.rut.util.algorithm.support; DWrbp
]_u`EvEx6
import org.rut.util.algorithm.SortUtil; Fg=v6j4W
sKd)BA0`
/** bnr|Y!T}Bi
* @author treeroot s@~/x5jwCs
* @since 2006-2-2 hJ[UB
* @version 1.0 N@()F&e
*/ o,FUfO}F
public class ImprovedQuickSort implements SortUtil.Sort { G3dhM#!
mgVML&^
private static int MAX_STACK_SIZE=4096; f=m/
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private static int THRESHOLD=10; o?wt$j-
/* (non-Javadoc) l3p3tT3+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kOipH |.x
*/ dE [Ol
public void sort(int[] data) { 2.f|2:I
int[] stack=new int[MAX_STACK_SIZE]; 9"ugz^uKt
AS|Rd+.
int top=-1; o1k#."wHr
int pivot; QKccrAo
int pivotIndex,l,r; FJwt?3\u5
7`fY*O6
stack[++top]=0; Dtt-|_EMS
stack[++top]=data.length-1; oLS7`+b$
d}-'<Z#G
while(top>0){ xNX'~B^4d
int j=stack[top--]; j#3m|dQ
int i=stack[top--]; TQJF+;%
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pivotIndex=(i+j)/2; v=p0 +J>
pivot=data[pivotIndex]; ,|pp67
t$ZkdF
SortUtil.swap(data,pivotIndex,j); J3=BE2L
J=*K"8Qr
file://partition )GJP_*Ab
l=i-1; W:O0}
r=j; /^2CGcT(
do{ E[?kGR[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _{Y$o'*#I
SortUtil.swap(data,l,r); gS$A
} yM ,VrUh
while(l SortUtil.swap(data,l,r); <%K UdkzEP
SortUtil.swap(data,l,j); ? )_7U
^ ulps**e
if((l-i)>THRESHOLD){ K-(;D4/sQE
stack[++top]=i; d>!p=O`>{q
stack[++top]=l-1; H$tb;:
} 5v9uHxy
if((j-l)>THRESHOLD){ S}7>RHe
stack[++top]=l+1; RmO yGSO
stack[++top]=j; 4seciz0?
} f#P_xn&et
-H\,2FO
} O2 v.
file://new InsertSort().sort(data); 5pJ*1pfeo
insertSort(data); }bMWTT
} 2xTT)9Tq*
/** ?@UAL.y
* @param data GMm'of#
*/ A5XR3$5P
private void insertSort(int[] data) { r1Z<:}ZwK
int temp; r)b<{u=]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {?i)K X^
} a)S7}0|R
} C) .2gQ
G
} ce' TYkPM
0JXqhc9'
} lIh[|]
]yLhJ_^
归并排序: 9=$!gC)
bk3Unreh
package org.rut.util.algorithm.support; )N7n,_#T>
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import org.rut.util.algorithm.SortUtil; >IY,be6>P
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/** bx>i6
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* @author treeroot J#7y<
s
* @since 2006-2-2 @!\K>G >9[
* @version 1.0 -0 0}if7
*/ !kXeO6X@m
public class MergeSort implements SortUtil.Sort{ |4Ha?W
C4NRDwU|.
/* (non-Javadoc) If'2rE7J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n93zD*;5
*/ 8#59iQl
public void sort(int[] data) { ~>%DKJe
int[] temp=new int[data.length]; Zq*eX\#C
mergeSort(data,temp,0,data.length-1); uA\J0"0;}
} \L[i9m| e
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private void mergeSort(int[] data,int[] temp,int l,int r){ 8Rxc&`_X
int mid=(l+r)/2; #J$qa Ul
if(l==r) return ; M !{'ED
mergeSort(data,temp,l,mid); >5Lexj
mergeSort(data,temp,mid+1,r); H?U't
09
for(int i=l;i<=r;i++){ SLoo:)
temp=data; rAXX}"l6s
} DJP6TFT&G
int i1=l; {$fsS&aPg
int i2=mid+1; g-@h>$<
1
for(int cur=l;cur<=r;cur++){ Nl*i5 io
if(i1==mid+1) r(`nt-o@
data[cur]=temp[i2++]; 7& 6Y
else if(i2>r) _/ Os^ >R
data[cur]=temp[i1++]; >.LKct*5K
else if(temp[i1] data[cur]=temp[i1++]; l`gTU?<xd
else ]}LGbv"`A
data[cur]=temp[i2++]; xjq0D[
} 2P5_zND
} _e'Y3:
^l !L)iw
} CV^c",b_
`="v>qN2\
改进后的归并排序: 7GZq|M_:y
Z2p> n`D
package org.rut.util.algorithm.support; +t]Xj1Q
yP\Up
import org.rut.util.algorithm.SortUtil; ("Dv>&w9
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/** 8D~x\!(p\
* @author treeroot rt b* n~
* @since 2006-2-2 _;e\:7<m
* @version 1.0 D,rZ0?R
*/ Z+idLbIs
public class ImprovedMergeSort implements SortUtil.Sort { +?d} 7zh
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private static final int THRESHOLD = 10; \*"`L3
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/* 2QayM?k8
* (non-Javadoc) (0jr;jv
* #":a6%0Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJf<*j^G
*/ L11L23:
public void sort(int[] data) { UK3a{O[5
int[] temp=new int[data.length]; `WlE|
G[
mergeSort(data,temp,0,data.length-1); -M61Mw1
} G)7)]yBL
@ajM^L!O
private void mergeSort(int[] data, int[] temp, int l, int r) { H(qm>h$bU
int i, j, k; :vQM>9l7
int mid = (l + r) / 2; /iC_!n u
if (l == r) WE.Tuo5L
return; 5$Kf]ZP
if ((mid - l) >= THRESHOLD) T*P+Fh"
mergeSort(data, temp, l, mid); wO!u!I
else ,w`~K:b.
insertSort(data, l, mid - l + 1); yJD>ny
if ((r - mid) > THRESHOLD) y1,5$0@G
mergeSort(data, temp, mid + 1, r); U e*$&VlT
else {ZqQ!!b
insertSort(data, mid + 1, r - mid); K$-;;pUl
+hH}h?K
for (i = l; i <= mid; i++) { Lq04T0
temp = data; #T%zfcUj
} _413\`%8?
for (j = 1; j <= r - mid; j++) { xzk}[3P{
temp[r - j + 1] = data[j + mid]; z="L4
} $D_HZ"ytu
int a = temp[l]; JR1*|u
int b = temp[r]; H/jm
f5
for (i = l, j = r, k = l; k <= r; k++) { l{%a&/
if (a < b) { Y';>O `
data[k] = temp[i++]; !_^g8^>2(
a = temp; Y4To@TrN#\
} else { IZ~.{UQ
data[k] = temp[j--]; <lo`q<q
b = temp[j]; GqUSVQ
} yJ/#"z=h?
} #s+Q{2s
} %#k,6;m
|Fv?6qw+
/** 2k+16/T
* @param data -e*BqH2t
* @param l v2J0u:#,
* @param i Q!$IQJ]|Y
*/ D 'L{wm
private void insertSort(int[] data, int start, int len) { #&siHHs \
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zilaP)5x6
} 4}-#mBV]/
} wj%wp[KA$
} j=j+Nf$
} 9#@Zz4Ww
IVteF*8hU
堆排序: ,F:=(21
(~#G'Hd
package org.rut.util.algorithm.support; }1m_o@{3P
"{(
[!
import org.rut.util.algorithm.SortUtil; ( V4G<-jG
}1>atgq]w
/** 9^zx8MRXd
* @author treeroot sXB+s
* @since 2006-2-2 V2Y$yV8g1
* @version 1.0 mo9$NGM&}
*/ ;0j*>fb\q7
public class HeapSort implements SortUtil.Sort{ k/#>S*Ne
u(hC^T1
/* (non-Javadoc) 263*: Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }m_t$aaUc1
*/ @^CG[:|
public void sort(int[] data) { {!=2<-Aq
MaxHeap h=new MaxHeap(); ;3UvkN
h.init(data); ZQ[~*)
for(int i=0;i h.remove(); Wc;+2Hl[@
System.arraycopy(h.queue,1,data,0,data.length); Cef7+fa
} $l"MXxx5I
vlQ0gsXK
private static class MaxHeap{ ^<;w+%[MT
Wk[)+\WQ?
void init(int[] data){ @L;C_GEa
this.queue=new int[data.length+1]; XS|mKuMcC
for(int i=0;i queue[++size]=data; v3^t/[e~:
fixUp(size); f)^t')
} "Ot{^_e
} MPvWCPB
qGa<@ b
private int size=0; KjYDFrR4
,?y7,nb
private int[] queue; HRHrSf7
D rTM$)
public int get() { c[{UI
return queue[1]; a: IwA9!L
} ,n5a] )Dg
.,mM%w,^O
public void remove() { ^zeL+(@ r/
SortUtil.swap(queue,1,size--); 4Hd Si
fixDown(1); IMaYEO[
} $8@+j[>
file://fixdown W 5I=X]&
private void fixDown(int k) { \`gEu{
int j; iGa}3pF
while ((j = k << 1) <= size) { s3< F
if (j < size %26amp;%26amp; queue[j] j++; .. UoyBV
if (queue[k]>queue[j]) file://不用交换 <[9?Rj@
break; (nz}J)T&
SortUtil.swap(queue,j,k); :c<*%*e
k = j; (}0S1)7t
} cY~M4:vgT
} 4\1;A`2%0
private void fixUp(int k) { YFqZe6g0$
while (k > 1) { :gaETr
int j = k >> 1; o^PuhVu
if (queue[j]>queue[k]) bK7.St
break; ue9h
SortUtil.swap(queue,j,k); %~\
k = j; gvo?([j-m
} _n_sfT6)B
} |."G ?*
h0XH`v
} Y^3)!>
$_bZA;EMQ
} $rTu6(i1
6$(0Ty
SortUtil: h--45`cE
ucM.Ro=@
package org.rut.util.algorithm; ~oFh>9u
eP?~-#
import org.rut.util.algorithm.support.BubbleSort; `sxN!Jj?
import org.rut.util.algorithm.support.HeapSort; Nm"<!a<F
import org.rut.util.algorithm.support.ImprovedMergeSort; C9pnU,[
import org.rut.util.algorithm.support.ImprovedQuickSort; d<v~=
import org.rut.util.algorithm.support.InsertSort; sMX$Q45e
import org.rut.util.algorithm.support.MergeSort; en%B>]QI
import org.rut.util.algorithm.support.QuickSort; J7m`]!*t
import org.rut.util.algorithm.support.SelectionSort; ?\M)WDO
import org.rut.util.algorithm.support.ShellSort; 1t#XQ?8
.FJj
/** 6=3(oUl
* @author treeroot a7=YG6[
* @since 2006-2-2 Ge1duRGa
* @version 1.0 GoL|iNW`
*/ ~4+8p9f
public class SortUtil { NQ{-@/v
public final static int INSERT = 1; ^(g_.>
public final static int BUBBLE = 2; CPGL!:
public final static int SELECTION = 3; Z+,CL/
public final static int SHELL = 4; gi 5XP]z
public final static int QUICK = 5; Iy.mVtcsZ
public final static int IMPROVED_QUICK = 6; ^Rk^XQCh
public final static int MERGE = 7; ()B7(Y
public final static int IMPROVED_MERGE = 8; 9R>~~~{-Go
public final static int HEAP = 9; r},lu=em
!"%S#nrL$
public static void sort(int[] data) { vlAy!:CV
sort(data, IMPROVED_QUICK); UeNF^6sWu0
} L5&K}F]r^
private static String[] name={ TR?Bvy2s:g
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [x|)}P7%s
}; ~.H~XKw
*F..ZS'$[
private static Sort[] impl=new Sort[]{ 7P
c(<Ui+
new InsertSort(), {yU0D*#6
new BubbleSort(), W
W35&mI)k
new SelectionSort(), F#KF6)P
new ShellSort(), K?JV]^
new QuickSort(), +9jivOmK
new ImprovedQuickSort(), ;da4\bppt
new MergeSort(), S!<"Swf:
new ImprovedMergeSort(), wO89&XZ<
new HeapSort() )tCx5 9
}; ,A?{~?u.
$i -zMa
public static String toString(int algorithm){ df yrn%^Ia
return name[algorithm-1]; #XfT1
} Yq{jEatY{/
CMFC"e Se
public static void sort(int[] data, int algorithm) {
<irpmRQr
impl[algorithm-1].sort(data); _trpXkQp
} "H@Fe
Eny!R@u7q
public static interface Sort { z:?:
public void sort(int[] data); k3#wLJ
} ZLuPz#
+2El
public static void swap(int[] data, int i, int j) { yE<,Z%J[n
int temp = data; oLd:3,p}
data = data[j]; !9PX\Xbn
data[j] = temp; *iYMX[$
} ~Z7)x7
z
} 1S&0