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。 042sjt
插入排序: KJwkkCE/=
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package org.rut.util.algorithm.support; t:X[Blw3$
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import org.rut.util.algorithm.SortUtil; 'U)|m
/** fNi&1J-/
* @author treeroot 3:rH1vG.m
* @since 2006-2-2 #zcp!WE.OI
* @version 1.0 g#V3u=I8~
*/ yT42u|xZA
public class InsertSort implements SortUtil.Sort{ cz/mUU
%<e\s6|P:
/* (non-Javadoc) *|x2"?d-F:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T[=XGAJ
*/ WT!8.M;Kv
public void sort(int[] data) { UcMe("U
int temp; E0c5c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PZ-|W
} }Kq5!XJV9C
} 0>-l {4srs
} 2I:vie
*?gn@4Ly
} YE5v~2
0.nS306
冒泡排序: -9{}rE
yov:JnWo
package org.rut.util.algorithm.support; _f,q8ZkSr
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import org.rut.util.algorithm.SortUtil; U<eVLfSij
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/** h^$>{0"
* @author treeroot ?M7nbfy[A@
* @since 2006-2-2 0i$jtCCL(
* @version 1.0 "Q+'lA[}
*/ LaJc;Jt$
public class BubbleSort implements SortUtil.Sort{ "G|Gyc
g4d5G=y
/* (non-Javadoc) mCtuyGY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )xP]rOT
*/ ~@z5Ld3xz
public void sort(int[] data) { t9m:E
int temp; E[LXZh
for(int i=0;i for(int j=data.length-1;j>i;j--){ gi:;{
if(data[j] SortUtil.swap(data,j,j-1); Ih`n:aA
} bqf=;N vog
} \XMl8G
} Lq
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} )TM ![^d
+:It1`A~]
} 1_/\{quE
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选择排序: {C*mn !u
>Q+a'bd w
package org.rut.util.algorithm.support; ,D3q8?j
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import org.rut.util.algorithm.SortUtil; "SyyOD
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/** g@nk0lQewj
* @author treeroot a|5GC pp
* @since 2006-2-2 WLNkO^zb
* @version 1.0 fUb5KCZ
*/ SNff
public class SelectionSort implements SortUtil.Sort { 8c__ U<
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/* 1y_{#,{>
* (non-Javadoc) u
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* >g93Bj*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )J (ekfM
*/ >6ch[W5k@
public void sort(int[] data) { $F G4wA
int temp; OU9=O>
for (int i = 0; i < data.length; i++) { &J"a` l2
int lowIndex = i; %)l2dK&9"j
for (int j = data.length - 1; j > i; j--) { &.7\{q\(
if (data[j] < data[lowIndex]) { ;=)CjC8)
lowIndex = j; xvp{F9~qT
} G!OD7:
} )KBv[|
SortUtil.swap(data,i,lowIndex); |}q0G~l
} !M^pL|
} ])~*)I~Y
Q6%m}R
} D9H|]W ~
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Shell排序: )CdglPK
O:lD>A4{
package org.rut.util.algorithm.support; f
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import org.rut.util.algorithm.SortUtil; [(ty{
*i%!j/QDAP
/** 348Bu7':
* @author treeroot do=VPqy
* @since 2006-2-2 _7$j>xX
* @version 1.0 |nD2k,S<?
*/ "5dh]-m n
public class ShellSort implements SortUtil.Sort{ %iD>^ Dp
*A,=Y/
/* (non-Javadoc) R"O9~s6N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1P2%n[y
*/ =nid #<X
public void sort(int[] data) { ~`-9i{L
for(int i=data.length/2;i>2;i/=2){ #0xvxg%{
for(int j=0;j insertSort(data,j,i); p2&KGtX'
} WJz
} \=yg@K?"AJ
insertSort(data,0,1); XJ@ /r,2
} fEQ<L!'
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/** k92X)/ll'
* @param data C(,s_Ks
* @param j 3<JZt.|
* @param i "_#%W
oo
*/ z=ppNP0
private void insertSort(int[] data, int start, int inc) { Nb]qY>K
int temp; )b!q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'a"<uk3DT
} ZQ20IY|,
} -'q=oTZ
} y[r T5ed
9=<
Z>
} z9dVT'
)-jvp8%BK
快速排序: "n]B~D
dc?Yk3(Y
package org.rut.util.algorithm.support; wEDU*}~
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import org.rut.util.algorithm.SortUtil; ARU,Wtj#
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/** j./bVmd.
* @author treeroot >Q+EqT
* @since 2006-2-2
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* @version 1.0 ]L&_R^
*/ (V=lK6WQm
public class QuickSort implements SortUtil.Sort{ lsio\ $
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/* (non-Javadoc) F=P|vYL&&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OH)SdSBz
*/ orHVL 2
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public void sort(int[] data) { UNY>Q7
quickSort(data,0,data.length-1); ;[9cj&7C<
} Y$Uvt_
private void quickSort(int[] data,int i,int j){ },f7I^s|
int pivotIndex=(i+j)/2; %0u7pk
file://swap h/_z QR-
SortUtil.swap(data,pivotIndex,j); 1^Caz-
d[$1:V
int k=partition(data,i-1,j,data[j]); ^R<= }
SortUtil.swap(data,k,j);
y"9TS,lmK
if((k-i)>1) quickSort(data,i,k-1); KqtI^qC8
if((j-k)>1) quickSort(data,k+1,j); k8*=1kl"
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} wk5a &
/** Rwy:.)7B$q
* @param data HE(U0<9c
* @param i {H>iL
* @param j B2Orw8F
* @return TR%?U/_4;r
*/ YK[O#V
private int partition(int[] data, int l, int r,int pivot) { ZcdS?Z2k
do{ CyXcA;H,.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^WD[>E~
SortUtil.swap(data,l,r); =3J~Fk
} r% B5@+{so
while(l SortUtil.swap(data,l,r); xMuy[)b
return l; !8A5Y[(XD
} -#Wc@\;
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} m=}kGzIY4
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改进后的快速排序: z$YOV"N
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package org.rut.util.algorithm.support; igo7F@_,
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import org.rut.util.algorithm.SortUtil; ]mqB&{g
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/** (ZI&'"H
* @author treeroot I'yhxymZ;
* @since 2006-2-2 74[}AA
* @version 1.0 1zp,Suv
*/ }h]:I'R!
public class ImprovedQuickSort implements SortUtil.Sort { 'Klz`)F
X G^
private static int MAX_STACK_SIZE=4096; h|-r t15
private static int THRESHOLD=10; om/gk4S2
/* (non-Javadoc) $8eq&_gJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [Q$"+@jw
*/ W&yw5rt**
public void sort(int[] data) { b<7.^
int[] stack=new int[MAX_STACK_SIZE]; .[_&>@bmrP
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int top=-1; nC*/?y*9
int pivot; k~hL8ZT[
int pivotIndex,l,r; > voUh;L
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stack[++top]=0; zf S<X
stack[++top]=data.length-1; eVlI:yqppj
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while(top>0){ x)GoxH~#
int j=stack[top--]; #IXQ;2%E
int i=stack[top--]; [ z&y]~
}0!\%7-Q
pivotIndex=(i+j)/2; ~\kRW6
pivot=data[pivotIndex]; 9GGBJTk-
WW_X:N~~e\
SortUtil.swap(data,pivotIndex,j); c,-< 4e
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file://partition P$oa6`%l
l=i-1; oC?b]tzj
r=j; #?,cYh+
do{ yqYX<<!V
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RoiMvrJQP
SortUtil.swap(data,l,r); =kCpCpET
} 0GG;o[<
while(l SortUtil.swap(data,l,r); \e?T9c6,
SortUtil.swap(data,l,j); &\(YmY
[+%*s3`c#
if((l-i)>THRESHOLD){ Y/hay[6
stack[++top]=i; cN :;ir
stack[++top]=l-1; ^KhFBed
} Fb}9cpz{
if((j-l)>THRESHOLD){ }@#eD
stack[++top]=l+1; dy0!Zz
stack[++top]=j; >/n/n{{
} w5|"cD#8A
Iq52rI}
} jQdfFR
file://new InsertSort().sort(data); kOc'@;_O
insertSort(data); -`gC?yff:
} F 4hEfO3
/** p;H1,E:Re#
* @param data D\TL6"wo
*/ Op0
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private void insertSort(int[] data) { ^:q(ksssY
int temp; ht-6_]+ME
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ILpB:g
} J|b1
K]
} !bY{T#i)k
} 7oWv'
H>D_0o<#y
} t3WlVUtq3
L\B+j+~
归并排序: LRI_s>7
uu/MXID
package org.rut.util.algorithm.support; Y#m0/1-
KOxD%bX_
import org.rut.util.algorithm.SortUtil; OGVhb>LO1
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/** A<Na,EC
* @author treeroot mPu5%%
* @since 2006-2-2 z/ i3
* @version 1.0 ^aC[ZP:
*/ fvx0]of
public class MergeSort implements SortUtil.Sort{ k~gQn:.Cx
b6i0_fOO
/* (non-Javadoc) eu4x{NmQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ewLr+8
*/ '=ZE*nGC
public void sort(int[] data) { v#X? KqD
int[] temp=new int[data.length]; sM4wh_lO
mergeSort(data,temp,0,data.length-1); 1TVTP2&Rd
} BAPi<U'D
"- Ns1A8
private void mergeSort(int[] data,int[] temp,int l,int r){ l nZ=< T
int mid=(l+r)/2; vKW%l
if(l==r) return ; W,<Vr2J[
mergeSort(data,temp,l,mid); m&x0,8
mergeSort(data,temp,mid+1,r); C +IXP
for(int i=l;i<=r;i++){ B;@yOm=
temp=data; RDZq(rKc
} m ;KP
int i1=l; SAoqq
int i2=mid+1; ^\CQWgY(
for(int cur=l;cur<=r;cur++){ n-\B z.
if(i1==mid+1) |fA[s7)
data[cur]=temp[i2++]; MHbRG_zW
else if(i2>r) x}roPhZ
data[cur]=temp[i1++]; E*ic9Za8`h
else if(temp[i1] data[cur]=temp[i1++]; 9-@w(kMu
else x?%vqg^r
data[cur]=temp[i2++]; tsk}]@W
} QL)UPf>Kp
} AiyjrEa%
<wuP*vI"h
} |9Y9pked8
0Icyi#N
改进后的归并排序: mkWIJH
XI0O^[/n{
package org.rut.util.algorithm.support; X3"V1@-i4$
mA4v 4z
import org.rut.util.algorithm.SortUtil; 4j | vzyc
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/**
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* @author treeroot Qj=l OhM
* @since 2006-2-2 R_*\?^k|A
* @version 1.0 "L,FUo^&
*/ _
9k^Hd[L$
public class ImprovedMergeSort implements SortUtil.Sort { W$3p,VTMmB
\<PW_'6
private static final int THRESHOLD = 10; 6^zv:C%
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/* USbiI%
* (non-Javadoc) 06ueE\@Sg
* )~5`A*Ku
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $DMeUA\av
*/ #e#8I7P
public void sort(int[] data) { ;6]+/e7O
int[] temp=new int[data.length]; *L^{p.K4
mergeSort(data,temp,0,data.length-1); =tP|sYR]^
} Ri,UHI4 W
C*KRu`t
private void mergeSort(int[] data, int[] temp, int l, int r) { _Y0o\0B
int i, j, k; >Z3}WMgBN
int mid = (l + r) / 2; 1|gEY;Ru
if (l == r) &&m%=i.qK
return; ,wq.C6;&
if ((mid - l) >= THRESHOLD) RJWlG'i
mergeSort(data, temp, l, mid); ('gjfl
else MAR;k?d
insertSort(data, l, mid - l + 1); :+;F" _
if ((r - mid) > THRESHOLD) |e9}G,1
mergeSort(data, temp, mid + 1, r); h?TE$&CL?
else YZoudX'"
insertSort(data, mid + 1, r - mid); KavRW.w
nc3 1X
for (i = l; i <= mid; i++) { :;JJvYIs
temp = data; +28FB[W
} <y!BO
for (j = 1; j <= r - mid; j++) { QQ?` 1W
temp[r - j + 1] = data[j + mid]; 8kqxr&,[
} *</;:?
int a = temp[l]; b\^.5SEw
int b = temp[r]; /fD)/x
for (i = l, j = r, k = l; k <= r; k++) { >N*QK6"=|
if (a < b) { 4];NX
data[k] = temp[i++]; h)YqC$A-s
a = temp; q<7Nz]Td
} else { yx-{}Yj^
data[k] = temp[j--]; LAr6J
b = temp[j]; 0nl)0|?Az
} #v`G4d
} ?W#! S
} }R>g(q=N
J|I|3h<T
/** S'A~9+
* @param data MVTU$
65
* @param l p%G\5.GcJL
* @param i beq)Frn^
*/ r67 3+
private void insertSort(int[] data, int start, int len) { xWV_Do)z
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xi.;`Q^#
} hTy#Q.=
} 7?kvrIuY&
} :Z/ig%
} ir\
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堆排序: O4}cv
Dm5UQe
package org.rut.util.algorithm.support; '[A>eC++
mB!81%f%|
import org.rut.util.algorithm.SortUtil; X/.|S57
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/** \F<]l6E
* @author treeroot *D\nsJ*g
* @since 2006-2-2 |D^[]*cEH
* @version 1.0 Ak1f*HGl|
*/ )JZfC&,
public class HeapSort implements SortUtil.Sort{ 4BCZ~_
,2]6cP(6qQ
/* (non-Javadoc) M"P$hb'F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -Y+[`0$'
*/ M
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public void sort(int[] data) { K&S~IFy
MaxHeap h=new MaxHeap(); u{\`*dNx
h.init(data); S4tdWA
for(int i=0;i h.remove(); zKI(yC
System.arraycopy(h.queue,1,data,0,data.length); F 6SIhf.;
} 'T.> oP0>
kDm=Cjxv
private static class MaxHeap{ z~X] v["d
K7y}R%QF
void init(int[] data){ a#mdD:,cF
this.queue=new int[data.length+1]; $+rdzsf)+/
for(int i=0;i queue[++size]=data; .Wb),
fixUp(size); Xe*
L^8+
} 2
OGg`1XX
} '9b<r7\@
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private int size=0; b9:E0/6
N($j;<Q
private int[] queue; qC]D9
A
%u!#f<"[
public int get() { OtnYv
return queue[1]; ]P 2M
} (apAUIE
uT=sDWD:
public void remove() { 2Yyc`o0R;h
SortUtil.swap(queue,1,size--); W<58TCd
fixDown(1); NW~n+uk5v
} dLo%+V#/A
file://fixdown ] e&"CF
private void fixDown(int k) { .kBAUkL:
int j; 8^HMK$
while ((j = k << 1) <= size) { ^^)Pv#[3
if (j < size %26amp;%26amp; queue[j] j++; {E@@14]g
if (queue[k]>queue[j]) file://不用交换 b@,w/Uw[*
break; !ZB|GLpo6
SortUtil.swap(queue,j,k); v1;`.PWD
k = j; mjH8q&szf
} tFb49zbk
} 8XTVpf4
private void fixUp(int k) { BV7GzJ2([{
while (k > 1) { }-Zfljj
int j = k >> 1; ;}:"[B3$
if (queue[j]>queue[k]) EI+.Q
break; u(d>R5}'
SortUtil.swap(queue,j,k); cU*7E39
k = j; ogPxj KSI
} }z[O_S,X
} `<
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} rj,Sk~0Q
D3MuP
p-v
} ww[STg
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SortUtil: ~r=u1]z
%(n4`@
package org.rut.util.algorithm; Oa*/jZjr
KaO8rwzDN
import org.rut.util.algorithm.support.BubbleSort; zQ7SiRt7*
import org.rut.util.algorithm.support.HeapSort; _a c_8m
import org.rut.util.algorithm.support.ImprovedMergeSort; Fnr*.k
import org.rut.util.algorithm.support.ImprovedQuickSort; ,A_itRHH
import org.rut.util.algorithm.support.InsertSort; G;,2cu
K
import org.rut.util.algorithm.support.MergeSort; D<nTo&m_
import org.rut.util.algorithm.support.QuickSort; C[wnor!
import org.rut.util.algorithm.support.SelectionSort; "< [D1E\
import org.rut.util.algorithm.support.ShellSort; Tqm9><!r
M a_! 1Y
/** >)!"XFbb
* @author treeroot 2)mKcUL-
* @since 2006-2-2 ^2Op?J
* @version 1.0 )D(XDN
*/ AEEy49e
public class SortUtil { |f`!{=?
public final static int INSERT = 1; I_N"mnn@Nr
public final static int BUBBLE = 2; pcL02W|J
public final static int SELECTION = 3; G!%1<SLi.
public final static int SHELL = 4; vsLn@k3
public final static int QUICK = 5; /I: d<A
public final static int IMPROVED_QUICK = 6; ~!Onz wmO
public final static int MERGE = 7; ^${-^w@,%V
public final static int IMPROVED_MERGE = 8; 011 _(v
public final static int HEAP = 9; O4(
Z%YBe
t t#M4n@
public static void sort(int[] data) { g_.BJ>Uv
sort(data, IMPROVED_QUICK); u},<On
} 00<iv"8
private static String[] name={ 2D&tDX<
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" KWU#Swa`
}; 6\'v_A
O
>b<br
private static Sort[] impl=new Sort[]{ Z+Z`J;
,
new InsertSort(), <L:v2 8c
new BubbleSort(), 6`F_js.a
new SelectionSort(), #|2w^Kn
new ShellSort(), +-HaYB|p
new QuickSort(), `N2zeFG
new ImprovedQuickSort(), 4uDz=B+8y
new MergeSort(), c1e7h l
new ImprovedMergeSort(), U
= T[-(:H
new HeapSort() W0l|E&fj[
}; t5[{ihv~:
hm?-QVRPV
public static String toString(int algorithm){ 9KD2C>d<
return name[algorithm-1]; Ujb||(W
} b Kv9F@
k1B7uA'h"G
public static void sort(int[] data, int algorithm) { O!uX:TE|Q
impl[algorithm-1].sort(data); 5(TI2,4
} 7?/ Fr(\
vhdT"7`U
public static interface Sort { %vn rLt$
public void sort(int[] data); !d%OoRSU'
} ]Jm9D=
=suj3.
public static void swap(int[] data, int i, int j) { 8v c4J5
int temp = data; 5U%uS^%DP
data = data[j]; :6Bk<
data[j] = temp; PK!=3fK4\F
} ^yjc"r%B
} &!Y^DR/