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。 ezNE9g
插入排序: C">=2OO
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package org.rut.util.algorithm.support; IUBps0.T\
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import org.rut.util.algorithm.SortUtil; ne%OTr4dD
/** a\2Myj
* @author treeroot c75vAKZ2
* @since 2006-2-2 )9sr,3w
* @version 1.0 {G*:N[pJp
*/ k:uuJ|
public class InsertSort implements SortUtil.Sort{ '[ddE!ta
jU9zCMyNF
/* (non-Javadoc) R`3>0LrC8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zp(P)Obs#
*/ mWFZg.#?
public void sort(int[] data) { N?<@o2{
int temp; nO7o7bc
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E*b[.vUp
} g!|E!\p
} %'~<:>:"E
} v'~nABYH
}oxaB9r
} "aO,
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冒泡排序: )A+j
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package org.rut.util.algorithm.support; u9^;~i,
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import org.rut.util.algorithm.SortUtil; ->25$5#
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/** S^"e5n2
* @author treeroot \6
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* @since 2006-2-2 cj_?*
* @version 1.0 (tz]!Aa{s
*/ Ip|^?uyrk
public class BubbleSort implements SortUtil.Sort{ k{w^MOHNg
78BuD[<X-
/* (non-Javadoc) A;nmua-Fv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /lok3J:
*/ >!p K94
public void sort(int[] data) { (_5+`YsV
int temp; |]3);^0
for(int i=0;i for(int j=data.length-1;j>i;j--){ s(9rBDoY(8
if(data[j] SortUtil.swap(data,j,j-1); zLK
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} {OoNhN9
} !!#ale&
} 3Qr!?=nf
} 0P/LW|16
:DpK{$eCb
} 3n)iTSU3
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选择排序: kx(:Z8DX
H#`?toS
package org.rut.util.algorithm.support; >
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import org.rut.util.algorithm.SortUtil; d>-EtWd
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/** `8bp6}OD,
* @author treeroot g*AqFY7|
* @since 2006-2-2 DNO%J^
* @version 1.0 S60`'!y
*/ 2g==98>cg
public class SelectionSort implements SortUtil.Sort { uCr
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/* b4PK
* (non-Javadoc) tR/
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* V1qHl5"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #!@
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*/ z<=t3dj
public void sort(int[] data) { Bv*h?`Q
int temp; ]`m5!V_Y
for (int i = 0; i < data.length; i++) { I2Q?7p
int lowIndex = i; +y#979A,
for (int j = data.length - 1; j > i; j--) { j*
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if (data[j] < data[lowIndex]) { K_.x(Z(;4
lowIndex = j; <O&s 'A[
} h {btT
} ^jA^~h3(W
SortUtil.swap(data,i,lowIndex); %"V,V3kw4
} @#">~P|Hp
} q[g^[~WM#
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} LYv2ll`XP
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Shell排序: ?~8V;Qn
dksnW!
package org.rut.util.algorithm.support; v\u+=}rl
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import org.rut.util.algorithm.SortUtil; cl5 :|)
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/** d7Z\
* @author treeroot "
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* @since 2006-2-2 nAOId90wue
* @version 1.0 (>'d`^kjk
*/ [;+YO)
public class ShellSort implements SortUtil.Sort{ H6QQ<~_&
$TiAJ}:
/* (non-Javadoc) T%F'4_~No
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6|x<)Gc
*/ A,@"(3
public void sort(int[] data) { i[swOYz]X
for(int i=data.length/2;i>2;i/=2){ p+Xz9A"
for(int j=0;j insertSort(data,j,i); (;0]V+-
} 420K fVA
} +{&g|V
insertSort(data,0,1); ZO}*^
} -!"8j"pA:
)U?W+0[=
/** p w8'+FX
* @param data 7Uh}|6PU
* @param j ]|oqJ2P
* @param i <=lP6B
*/ X9>ujgK
private void insertSort(int[] data, int start, int inc) { ) PtaX|U
int temp; snrfHDhUw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m`|+_{4[n
} Oc1ZIIkh\
} ;1WclQ!(
} 3)sqAs(
K4~dEZ
} se-}d.PwL
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快速排序: 94+#6jd e
"+Kr1nW
package org.rut.util.algorithm.support; {u7E )Fdl
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import org.rut.util.algorithm.SortUtil; t{ 'QMX
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/** }-!$KR]:s
* @author treeroot p"ZPv~("V
* @since 2006-2-2 i
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* @version 1.0 XHV+Y+VG
*/ }rN"H4)
public class QuickSort implements SortUtil.Sort{ dg-pwWqN
t]V)3Ww
/* (non-Javadoc) Z@>>ZS1Do
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &]5<^?3
*/ SL(Q;_
public void sort(int[] data) { 6;VlX,,j
quickSort(data,0,data.length-1); McfSB(59
} 1oC/W?l^
private void quickSort(int[] data,int i,int j){ r`5;G4UI
int pivotIndex=(i+j)/2; oY{*X6:6<
file://swap =w8*n2
SortUtil.swap(data,pivotIndex,j); #SL/Jr
DZ
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int k=partition(data,i-1,j,data[j]); /(Y\ <
SortUtil.swap(data,k,j); T_r[#j
if((k-i)>1) quickSort(data,i,k-1); E3`KO'v%
if((j-k)>1) quickSort(data,k+1,j); !0cfz5t
#GTmC|[
} pt=[XhxC(>
/** 3>;U||O
* @param data /wmJMX
* @param i aPWFb.JO4
* @param j ]TGJ|X
* @return "<=^Sm
*/ %e_WO,R
private int partition(int[] data, int l, int r,int pivot) { &98qAO]Z
do{ rGoB&% pc
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6~^+</?
SortUtil.swap(data,l,r); qWo|LpxWt
} -5.>9+W8I
while(l SortUtil.swap(data,l,r); B} &C
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return l; ~]N%
{;F}
} |s|RJA1
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} m^p
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改进后的快速排序: _w)0r}{
5-n N8qs
package org.rut.util.algorithm.support; brZ3T`p+.P
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import org.rut.util.algorithm.SortUtil; .2OP>:9F
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/** \,~gA
* @author treeroot H3MT.Cpd
* @since 2006-2-2 KPKby?qQ^
* @version 1.0 Ie` `Wb=
*/ x}72jJe`
public class ImprovedQuickSort implements SortUtil.Sort { L{aT"Of{X
aRfkJPPa[
private static int MAX_STACK_SIZE=4096; nLYyS#
private static int THRESHOLD=10; h%#@Xd>.
/* (non-Javadoc) )\p@E3Uxf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U edh4qa
*/ R(ay&f%E
public void sort(int[] data) { _Tev503
int[] stack=new int[MAX_STACK_SIZE]; 0p![&O
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int top=-1; f'*HP%+Y
int pivot; SrU,-mA W
int pivotIndex,l,r; POx~m
IC7n;n9
stack[++top]=0; DtyT8kr
stack[++top]=data.length-1; *F2ob pU
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while(top>0){ h|_G2p^J+"
int j=stack[top--]; R~)c(jj5
int i=stack[top--]; h(jg7R
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pivotIndex=(i+j)/2; =v1s@5;~
pivot=data[pivotIndex]; luAhyEp
BB=%tz`B
SortUtil.swap(data,pivotIndex,j); Z3"f7l6
#2|sS|0 <
file://partition uflp4_D
l=i-1; NcRY
Ch
r=j; sLb[ZQ;j
do{ qky{]qNW
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \/lH]u\x
SortUtil.swap(data,l,r); 7RTp+FC]
} T3Qa[>+\
while(l SortUtil.swap(data,l,r); |\Jpjm)?
SortUtil.swap(data,l,j); %F1 Ce/
)=ZWn,ZB
if((l-i)>THRESHOLD){ *}cF]8c5W
stack[++top]=i; <c^m|v
stack[++top]=l-1; o=4d2V%m
} &nTB^MF
if((j-l)>THRESHOLD){ pOpie5)7X
stack[++top]=l+1; cqi: Rj
stack[++top]=j; .Mdxbs6.C
} XEY((VL0
{}{|trr-E
} qtD3<iWV
file://new InsertSort().sort(data); GYyP+7K4l[
insertSort(data); \KDOI 7
} UvxJ _
/** Ga"$_DyM
* @param data #*1\h=bzmW
*/ pX*Oc6.0mu
private void insertSort(int[] data) { Azq,N@HO
int temp; ZSU;>&>%v
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n<y!@p^X
} -D`*$rp,
} )9l5gZX'I
} }`\+_@w
r8}GiP0|
} @ $4(!80-
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归并排序: KPs5? X
"#qyX[\
package org.rut.util.algorithm.support; V2V^*9(wu@
Z~9\7QJn
import org.rut.util.algorithm.SortUtil; -_4U+Cfmtl
v](7c2;
/** m+s^K{k}
* @author treeroot w f,7
* @since 2006-2-2 I.euuzBgA
* @version 1.0 e{>X2UNW
*/ { P&l`
public class MergeSort implements SortUtil.Sort{ +79?}|
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/* (non-Javadoc) )R<hYd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GBGGV#_q'}
*/ 3<AZ,gF1
public void sort(int[] data) { n [[rI0]g
int[] temp=new int[data.length]; k "LbB#Q
mergeSort(data,temp,0,data.length-1); oL2|@WNj,
} [2a*TI
EdhT;!
private void mergeSort(int[] data,int[] temp,int l,int r){ /0uZ(F|>I
int mid=(l+r)/2; W8'cAY
if(l==r) return ; .Qn54tS0q
mergeSort(data,temp,l,mid); Ont4-AP
mergeSort(data,temp,mid+1,r); $o?Wum
for(int i=l;i<=r;i++){ k^}8=,j}
temp=data; L6fc_Mo.EE
} ?a+tL'D[
int i1=l; }:5AB93(
int i2=mid+1; 82WXgB>
for(int cur=l;cur<=r;cur++){ ZqsI\"bj
if(i1==mid+1) BSY2\AL p
data[cur]=temp[i2++]; :[3{-.c
else if(i2>r) \Azl6`Em
data[cur]=temp[i1++]; ,a9<\bd)
else if(temp[i1] data[cur]=temp[i1++]; 0(iTnzx0
else OW<i"?0
data[cur]=temp[i2++]; 4&~ft
} -ve{O-;
} t,4q]Jt
'j6PL;~c
} 2-Y%W(bEzs
XO~xbG7>gZ
改进后的归并排序: ja3wXz$2
(Hb
i+IHV
package org.rut.util.algorithm.support; + |Z1U$0g
Wky=]C%
import org.rut.util.algorithm.SortUtil; ,R5NKWo
9JV(}v5[
/** IT5AB?bxH
* @author treeroot J?&lpsB3_l
* @since 2006-2-2 TK<~(Dk
* @version 1.0 *|h-iA+9
*/ F2WUG
public class ImprovedMergeSort implements SortUtil.Sort { |v#N
Mt (wy%{zK
private static final int THRESHOLD = 10; Gnop
]#]|]>&
<
/* dtw1Am#Ci
* (non-Javadoc) HUiW#x%;
* u1s^AW8 y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fEf",{I
*/ >H?l[*9
public void sort(int[] data) { Wly-z$\
int[] temp=new int[data.length]; gO_{(\w*
mergeSort(data,temp,0,data.length-1); -fFM-gt^t
} ,rVm81-2
"v@$CR9<T
private void mergeSort(int[] data, int[] temp, int l, int r) { zc>/1>?M
int i, j, k; 0l#gS;
int mid = (l + r) / 2; <ek_n;R
if (l == r) iD+Q\l;%
return; cf)2GoV>e
if ((mid - l) >= THRESHOLD) ^Lr)STh
mergeSort(data, temp, l, mid); 8gwJ%"-K
else 12BTZ
insertSort(data, l, mid - l + 1); Se7NF@>9_
if ((r - mid) > THRESHOLD) l&2A]5C
mergeSort(data, temp, mid + 1, r); $BKGPGmh
else [<`K%1GQ
insertSort(data, mid + 1, r - mid); ]4wyuP,up
G&$+8r
for (i = l; i <= mid; i++) { LDqq'}qK6
temp = data; -jy-KC
} n*~=O '
for (j = 1; j <= r - mid; j++) { %>B?WR\yE
temp[r - j + 1] = data[j + mid]; vn<z\wVbf
} ,{P*ZK3u
int a = temp[l]; ?n<b:oO
int b = temp[r]; Ex2TV7I
for (i = l, j = r, k = l; k <= r; k++) { ]7" W(
if (a < b) { AB<|iJC
data[k] = temp[i++]; t"Ok-!c|
a = temp; !dQG 5v
} else { .O!JI"?
data[k] = temp[j--]; [mX/]31
b = temp[j]; B@g 0QgA
} ~?i;~S
} WBT/;),}:
} h.CbOI%Q
R!IODXP=
/** 1%~yb Q
* @param data G?$|aQ0j
* @param l ;mH O#
* @param i :L gFd
*/ >xQgCOi
private void insertSort(int[] data, int start, int len) { L&V;Xvbu%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :{@&5KQ8)
} T\7z87Q
} 2z9\p%MX
} `B6~KZ
} /Y$UJt
{(;dHF%{
堆排序: faQ}J%a
rMRM*`Q2
package org.rut.util.algorithm.support; 8xs}neDg*
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import org.rut.util.algorithm.SortUtil; M^^5JNY
&)`xlIw}
/** PwP;+R};|
* @author treeroot S o>P)d$8+
* @since 2006-2-2 A9Cq(L_H
* @version 1.0 htC~BK3(
*/ l&3f<e
public class HeapSort implements SortUtil.Sort{ 2ghTAsUx9
Q72}V9I9
/* (non-Javadoc) ]D(!ua5|x`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WAr;g?Q8
*/ )~/;Xl#b-
public void sort(int[] data) { wdS4iQD
MaxHeap h=new MaxHeap(); :`('lrq
h.init(data); 1k-YeQNe
for(int i=0;i h.remove(); hP1}Do
System.arraycopy(h.queue,1,data,0,data.length); pxm{?eBz
} cp D=9k!*K
(-k`|X"
private static class MaxHeap{ >6fc`3*!
mocR_3=Q?
void init(int[] data){ "^sh:{
this.queue=new int[data.length+1]; Py^ _::
for(int i=0;i queue[++size]=data; <}e2\x
fixUp(size); Ik{[BRzUgt
} h SGI
} "},0Cs
c6 O1Z\M@\
private int size=0; 5:3%RTLG
QuG=am?l`
private int[] queue; 0
#*M'C#
%:61@<
public int get() { "S8JHHx
return queue[1]; fP|rD[
} Po+I!TL'
}M3f ?Jv
public void remove() { ZR|)+W;
SortUtil.swap(queue,1,size--); h7],/? s
fixDown(1); kR+xInDM*
} w8MQA!=l
file://fixdown NBLiwL37{
private void fixDown(int k) { c?@WNv
int j; jC<1bf$K
while ((j = k << 1) <= size) { $U3|.4
if (j < size %26amp;%26amp; queue[j] j++; wUUDq?!k\
if (queue[k]>queue[j]) file://不用交换 =m<; Jx5
break; PwF
1Pr`r
SortUtil.swap(queue,j,k); &/%A 9R,
k = j; f?KHp|
} +w'"N
} Cxn<#Kf\-<
private void fixUp(int k) { e_eNtVq
while (k > 1) { !Q-h#']~L
int j = k >> 1; w$ zX.;s
if (queue[j]>queue[k]) qG=?+em
break; U<T.o0s=
SortUtil.swap(queue,j,k); i}fAjS:W
k = j; to}g4
} |I; tBqN{u
} ^,P#
<,D,
$P=B66t
^
} bfjC: "!H
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yI.T
} B=EI&+F+
,r=9$i_
SortUtil: nFRU-D$7
Se0!-NUK0
package org.rut.util.algorithm; dA)JR"r2
pQQN8Y~^Y
import org.rut.util.algorithm.support.BubbleSort; *=sMJY9#jE
import org.rut.util.algorithm.support.HeapSort; dC&OjBQ
import org.rut.util.algorithm.support.ImprovedMergeSort; {B!LhvYAH
import org.rut.util.algorithm.support.ImprovedQuickSort; GJu[af
import org.rut.util.algorithm.support.InsertSort; F&tU^(7<
import org.rut.util.algorithm.support.MergeSort; 8OS@gpz
import org.rut.util.algorithm.support.QuickSort; :i{Svb*_'
import org.rut.util.algorithm.support.SelectionSort; [`F}<L."
import org.rut.util.algorithm.support.ShellSort; .Yw
#8Bs15aV
/** cO8':P5Q
* @author treeroot )bd)noZi
* @since 2006-2-2 -Kas9\VWEw
* @version 1.0 tzTnFV
*/ 65% WjO
public class SortUtil { j_(DH2D
public final static int INSERT = 1; r<%ua6@
public final static int BUBBLE = 2; vz$_Fgsc.
public final static int SELECTION = 3; +:IwP
public final static int SHELL = 4; KQf=t0Z=Ce
public final static int QUICK = 5; d@0p<at>~
public final static int IMPROVED_QUICK = 6; }Wk^7[Y
public final static int MERGE = 7; TR<M3,RG#%
public final static int IMPROVED_MERGE = 8; z[cs/x
public final static int HEAP = 9; Jbv[Ql#
5 O't-'
public static void sort(int[] data) { 3P.v#TEst
sort(data, IMPROVED_QUICK); vcmB)P-T`O
} Nf]h8d~
private static String[] name={ FI(iqSJ6
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @TQzF-%#7
}; H@'f=Y*D
wv7XhY}
private static Sort[] impl=new Sort[]{ Uhw:XV@m
new InsertSort(), ? PI2X.6
new BubbleSort(), 8|"26UwD/
new SelectionSort(), sTSNu+
new ShellSort(), *QGyF`Go{
new QuickSort(), svaclkT=
new ImprovedQuickSort(), XkEJ_;:
new MergeSort(), W"v"mjYud
new ImprovedMergeSort(), T2dv!}7p
new HeapSort() Gp9:#L!
}; zR!p-7_w
xU!eT'Y
public static String toString(int algorithm){ .N>Th/K8
return name[algorithm-1]; d7]~t|
} E]0}&YG
X{u\|e{
public static void sort(int[] data, int algorithm) { >Y6iLQ$X
impl[algorithm-1].sort(data); Ncr*F^J4
} R_zQiSwG<
a;h.I}*]
public static interface Sort { ^2a 63_
public void sort(int[] data); vve L|j
} BW x=Q
\|YIuzlO4
public static void swap(int[] data, int i, int j) { SMn(c
int temp = data; '/'dg5bfV
data = data[j]; -(lCM/h
data[j] = temp; 4de:h E
} i@L_[d^|j`
} w(oi6kg