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。 ZcRm5Du~:
插入排序: %Nl(Y@dD*
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package org.rut.util.algorithm.support; [s{:}ZuKc
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import org.rut.util.algorithm.SortUtil; %pkq ?9
/** I?g__u=n~
* @author treeroot @qy*R'+
* @since 2006-2-2 b[;3KmUB
* @version 1.0 ZC*d^n]x.
*/ I<K/d
public class InsertSort implements SortUtil.Sort{ `>EvT7u
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/* (non-Javadoc) U(=9&c@]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O9X:1>a@i
*/ $#FlnM<=
public void sort(int[] data) { 97wy;'J[u
int temp; ~+ wamX3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g
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} hr6e 1Er
} (zDk68=v
} [(F<|f:n
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} ]U1,NhZu
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冒泡排序: Sw@,<4S
&E
riskI
package org.rut.util.algorithm.support; T$8~9qx
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import org.rut.util.algorithm.SortUtil; .^IhH|U
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/** +()t8,S,
* @author treeroot ^MHn2Cv/~
* @since 2006-2-2 *Yu\YjLPG
* @version 1.0 +Z<Q^5w@
*/ j~*Z7iu
public class BubbleSort implements SortUtil.Sort{ e=z_+gVm
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/* (non-Javadoc) kok^4VV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i!$^NIcJ
*/ nWF4[<t
public void sort(int[] data) { UZ\*]mxT
int temp; '(X[
w=WXy
for(int i=0;i for(int j=data.length-1;j>i;j--){ b\;u9C2y'
if(data[j] SortUtil.swap(data,j,j-1); 3|+f si)x
} |ch^eb^7"
} G+X[R^RD
} .!8X]trEg
} i;hc]fYb=K
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} <uKm%~xi<
T|s0qQi
选择排序: Wejwj/EU%
ERRT_G?
package org.rut.util.algorithm.support; 53t-'K0l
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import org.rut.util.algorithm.SortUtil; [&qbc#L
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/** :6j :9lYL2
* @author treeroot *Z]WaDw
* @since 2006-2-2 /4
LR0`A'
* @version 1.0 42>m,fb2[
*/ iqednk%
public class SelectionSort implements SortUtil.Sort { ^_KD&%M6
bxdXZBn
/* %FyygT b;S
* (non-Javadoc) !ObE{2Enf
* zYG,x*IH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>%S4Z+o
*/ s9rtXBJP
public void sort(int[] data) { d[]p_oIQq
int temp; n1>,#|#
for (int i = 0; i < data.length; i++) { \FoxKOTp
int lowIndex = i; ,#bb8+z&p
for (int j = data.length - 1; j > i; j--) {
1.0!H.>q
if (data[j] < data[lowIndex]) { }S
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lowIndex = j; .y7) XLC
} DqzA U7
} .?0>5-SfY
SortUtil.swap(data,i,lowIndex); ljJz#+H2_
} /"Yx@n
} TA0D{
x1BOW
} GX@W"y
N8XC~Dh{
Shell排序: J,1osG<6x
+~4bB$6*4)
package org.rut.util.algorithm.support; R@<_Hb;Aeb
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import org.rut.util.algorithm.SortUtil; uPFHlT
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/** f' '{.L
* @author treeroot mUt,Z^ l`
* @since 2006-2-2 -H4+ur JJ
* @version 1.0 =\Vu=I
*/ kWs+2j
public class ShellSort implements SortUtil.Sort{ ^V: "zzn&
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/* (non-Javadoc) L8dU(P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >Qm<-g
*/ t[?a@S~6
public void sort(int[] data) { R#/?AD&
for(int i=data.length/2;i>2;i/=2){ e$Bf[F#;-
for(int j=0;j insertSort(data,j,i); :6W^ S/pf
} 7V=MRf&xQ
} EDHg'q
insertSort(data,0,1); )8$:DW;
} !eR-Kor
X7H'Uk9:
/** `8Jq~u6_Z
* @param data kG$E
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* @param j '(*&Ax
* @param i jJUGZVM6)
*/ &]VQR2J}:
private void insertSort(int[] data, int start, int inc) { 1 Itil~
int temp; Q=(@K4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o9ctJf=qn
} 6QII&Fg
} U=kx`j>
} ~M
,{ _
5pM&h~M
} `V&1]C8x
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快速排序: _r\$NgJIM
PUP"ky^q"
package org.rut.util.algorithm.support; e"fN~`NhY
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import org.rut.util.algorithm.SortUtil; tyEPU^PM
%AG1oWWc>.
/** #v4LoNm
* @author treeroot *K(k Kph
* @since 2006-2-2 +}^|dkc
* @version 1.0 1yBt/U2
*/ hIuMHq7h
public class QuickSort implements SortUtil.Sort{ i iX\it$s
%kh#{*q$
/* (non-Javadoc) :K~rvv\L7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BTTLy^
*/ u^Nxvx3l0
public void sort(int[] data) { 8K0X[-hs8
quickSort(data,0,data.length-1); q^a|wTC
} ~)q g
private void quickSort(int[] data,int i,int j){ \ ]
int pivotIndex=(i+j)/2; 4M}|/?<Br
file://swap !K3})& w
SortUtil.swap(data,pivotIndex,j); 5@`F.F>"
38c?^
int k=partition(data,i-1,j,data[j]); .xGo\aD
SortUtil.swap(data,k,j); e}42/>}#D
if((k-i)>1) quickSort(data,i,k-1); %MJL5
if((j-k)>1) quickSort(data,k+1,j); bLgL0}=n
MA\m[h]
} =)I"wR"v$
/** E6Q]A~
* @param data A8pj~I/*-
* @param i :dP~.ZY7
* @param j SY-ez91
* @return l{Jt s I
*/ $Y6I_U
private int partition(int[] data, int l, int r,int pivot) { 8Q2]*%
do{ T><{ze
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,~4H{{<j
SortUtil.swap(data,l,r); jn-QKdqM
} 'K@-Z]
while(l SortUtil.swap(data,l,r); J["H[T*
return l; ^GMJ~[]
} "S5S|dBc
XTJvV
} vS OT*0r
01udlW.
改进后的快速排序: bfgz1
`u
VeZey)Q
package org.rut.util.algorithm.support; OAv>g pw
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import org.rut.util.algorithm.SortUtil; Sd},_Kh
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/** *AZ?~ i^o
* @author treeroot v`JF\"}S
* @since 2006-2-2 5Go0}'*%
* @version 1.0 Q48+O?&
*/ xS'zZ%?
public class ImprovedQuickSort implements SortUtil.Sort { i+f7
b'i'GJBQ+$
private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; CRFCqmevR
/* (non-Javadoc) v"Me {+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6*IpAIh
*/ 0n3D~Xzd
public void sort(int[] data) { ?d$"[lKX
int[] stack=new int[MAX_STACK_SIZE]; E\0X`QeY
9)`amhf>
int top=-1; }g`Gh|C
int pivot; 8L%M<JRg~
int pivotIndex,l,r; ;54(+5pqx
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stack[++top]=0; n` q2s'Pc
stack[++top]=data.length-1; @mf({Q>
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V
while(top>0){ 79ckLd9
int j=stack[top--]; oid[syPB
int i=stack[top--]; $;2)s}ci
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pivotIndex=(i+j)/2; $I@GUtzjp
pivot=data[pivotIndex]; 7JUb Va%
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SortUtil.swap(data,pivotIndex,j); 0DNU,u
z8HsYf(!
file://partition 9R
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l=i-1; f1mHN7hxW
r=j; !VwmPAMr#v
do{ hSB?@I4s<\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $Pxb1E
SortUtil.swap(data,l,r); d?A}qA[(
} -v+&pG?m
while(l SortUtil.swap(data,l,r); +2RNZEc
SortUtil.swap(data,l,j); fW?sYC'
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if((l-i)>THRESHOLD){ j!\dn!Xwt
stack[++top]=i; ?}}qu'N:N
stack[++top]=l-1; $5AC1g'
} c%z'xM
if((j-l)>THRESHOLD){ 8d!GZgC8R
stack[++top]=l+1; !aPD}xCH#
stack[++top]=j; o}8I_o&]U
} hQRL,?
vE%s,E,
} @w\I qr
file://new InsertSort().sort(data); 3e% nA8?
insertSort(data); NjX[;e-u
} 2Il8f
/** PU1,DU
* @param data h[kU<mU"T
*/
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private void insertSort(int[] data) { b9~A-Z
int temp; y6-XHeU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q&CElx?L
} gl{B=NN
} a 7#J2 r
} \'Ssn(s
wN97_Y=`n
} fRB5U'
+m)q% I>
归并排序: ]kD"&&HV
jVO{$j
package org.rut.util.algorithm.support; $A2n{
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import org.rut.util.algorithm.SortUtil; _ \D"E>oM
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/** |4;UyHh
* @author treeroot u.,Q4u|!
* @since 2006-2-2 .5w azvA
* @version 1.0 LlHa5]E@6
*/ edipA
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public class MergeSort implements SortUtil.Sort{ 7I9aG.;
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/* (non-Javadoc) aI3CNeav
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8|@9{
*/ e(?]SU|
public void sort(int[] data) { f>2MI4nMG
int[] temp=new int[data.length]; wM~H(=s`D
mergeSort(data,temp,0,data.length-1); +1rkq\{l
} 7b[wu~'(
n
GIyF81KR 3
private void mergeSort(int[] data,int[] temp,int l,int r){ ),(V6@Z?
int mid=(l+r)/2; \?**2{9&)
if(l==r) return ; Kcy@$uF{2
mergeSort(data,temp,l,mid); [;A[.&6
mergeSort(data,temp,mid+1,r); IgIYguQ
for(int i=l;i<=r;i++){ /mA,F;
temp=data; PLX>-7@
}
=-"c*^$]
int i1=l; nhT-Ido
int i2=mid+1; v+G=E2Lhv
for(int cur=l;cur<=r;cur++){ -F@L}|
if(i1==mid+1) j$Ab>}g]
data[cur]=temp[i2++]; cl@g
else if(i2>r) k^\pU\J
data[cur]=temp[i1++]; 5]5 KB;
else if(temp[i1] data[cur]=temp[i1++]; =Yz'D|=t
else q{0R=jb
data[cur]=temp[i2++]; :|+Qe e
} ?QZ"JX])
} E&`Nh5 JfC
1oiRW Re
} JH8}Ru%Z
l{Dct\ #s
改进后的归并排序: jYRP8 Yi
:9|\Z|S(I
package org.rut.util.algorithm.support; _oG&OJ@
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import org.rut.util.algorithm.SortUtil; =K\r-'V
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/** Fv74bC%
* @author treeroot =WIJ>#Go<
* @since 2006-2-2 1v zb8.
* @version 1.0 X]%itA
*/ *v
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public class ImprovedMergeSort implements SortUtil.Sort { A A^{B
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private static final int THRESHOLD = 10; #bH_Dg5I
C;+h.;}<D
/* ?e[lr>-
* (non-Javadoc) e:'?*BYVg3
* ,:LA.o}h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I,yC
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*/ !|ak^GE:(%
public void sort(int[] data) { sEMQ
int[] temp=new int[data.length]; p]T<HGJ P
mergeSort(data,temp,0,data.length-1); +N`ua
} J(DN!
M(x$xAiD
private void mergeSort(int[] data, int[] temp, int l, int r) { ':{>a28=
int i, j, k; t>=fTkB
int mid = (l + r) / 2; &i+Ce
if (l == r) 7x);x/#8Z
return; WOzf]3Xcj
if ((mid - l) >= THRESHOLD) JjaoOe
mergeSort(data, temp, l, mid); i4Lc$20?d
else #7ohQrP
insertSort(data, l, mid - l + 1); [e[<p\]
if ((r - mid) > THRESHOLD) Hso|e?Z
mergeSort(data, temp, mid + 1, r); %`Z+a.~ U
else S*o[ZA
insertSort(data, mid + 1, r - mid); Wbr+KX8)
xvl3vAN9
for (i = l; i <= mid; i++) { A, 3bC
temp = data; f+8wl!M+6
} o1M$.*
for (j = 1; j <= r - mid; j++) { n3AaZp[
temp[r - j + 1] = data[j + mid]; (aOv#Vor]%
} {9UEq0
int a = temp[l]; >leU:7
int b = temp[r]; 4=<tWa|@9
for (i = l, j = r, k = l; k <= r; k++) { 1`ayc|9BR
if (a < b) { q$I:`&
data[k] = temp[i++]; hn#1%p6t
a = temp; q`-;AG|xF
} else { %_ !bRo
data[k] = temp[j--]; =UUU$hq2
b = temp[j]; ,]bB9tid
} [!!Q,S"
} rj(T~d4
} ,eTU/Q>{,&
T5a*z}L5
/** h1'\:N`
* @param data pe^u$YE
* @param l
PRHCrHs
* @param i Fu!RhsW5j
*/ J8mdoVt
private void insertSort(int[] data, int start, int len) { SkmT`*v@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :POj6j/
} ^0/j0]O
} ;L']e"G
} CrwwU7qKL
} _/i4MtM
n2iJ%_zp
堆排序: ty8v
6J#
.l.a(_R
package org.rut.util.algorithm.support; X5j1`t,
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import org.rut.util.algorithm.SortUtil; J0@X<Lt U
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/** [VE8V-
* @author treeroot /`mks1:pK
* @since 2006-2-2 <J^MCqp!v
* @version 1.0 h*- Pr8
*/ dq]0X?[6
public class HeapSort implements SortUtil.Sort{ r zt Ru
ZIQ
[bE7
/* (non-Javadoc) %}%Qc6.H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z]B~{!W1
*/ |UX(+;n
public void sort(int[] data) { ]*AR,0N&
MaxHeap h=new MaxHeap(); {WYX~Mvvj
h.init(data); ZpnxecJUJ
for(int i=0;i h.remove(); Za1QC;7
System.arraycopy(h.queue,1,data,0,data.length); K*~0"F>"0
} H '
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private static class MaxHeap{ /pT=0=
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void init(int[] data){ *{L)dW+:
this.queue=new int[data.length+1]; H !$o$}A
for(int i=0;i queue[++size]=data; #w' kV#
fixUp(size); [Al&
}
iKT [=c
} cLLbZ=`
iv4H#rJ
private int size=0; `hQ5VJo
Fvbh\m
~
private int[] queue; 4rLL[??
]@phF _
public int get() { S[J}UpV
return queue[1]; _no*k?o*
} ?vbvBu{a
Z'.AA OG
public void remove() { ;IZwTXu !S
SortUtil.swap(queue,1,size--); c}2jmwq
fixDown(1); eQ]~dA8>
} `~By)?cT_>
file://fixdown /w}u3|L$
private void fixDown(int k) { t:'Mh9h7u
int j; wY[+ZT
while ((j = k << 1) <= size) { L6|oyf
if (j < size %26amp;%26amp; queue[j] j++; ^SF&=NpV
if (queue[k]>queue[j]) file://不用交换 ]SLP}Jwy
break; toBHkiuD
SortUtil.swap(queue,j,k); 4bYK}oS
k = j; 8ap%?
} 7_inJ$
} v@
lM3_rbO
private void fixUp(int k) { -#N.X_F
while (k > 1) { VgZsB$Ori
int j = k >> 1; U_I5fK=
if (queue[j]>queue[k]) ^f4s"T
break; -C(crn
SortUtil.swap(queue,j,k); `T5W}p[6
k = j; ]1#e#M]#
} 6[ j.@[t
} ~E2KZm
lww!-(<ww
} Ng~FEl
H[U!%Z
} 3 cK I
Ws|j#X<
SortUtil: 2{H@(Vgpbr
Dv5D~on{
package org.rut.util.algorithm; #_^Lb]jkM
e#$]Y?,
import org.rut.util.algorithm.support.BubbleSort; j i7[nY
import org.rut.util.algorithm.support.HeapSort; Lr~=^{
import org.rut.util.algorithm.support.ImprovedMergeSort; (ROY?5
@c
import org.rut.util.algorithm.support.ImprovedQuickSort; $QN"wL||
import org.rut.util.algorithm.support.InsertSort; wsI`fO^A8
import org.rut.util.algorithm.support.MergeSort; K;?m';z0
import org.rut.util.algorithm.support.QuickSort; w"-Lc4t+
import org.rut.util.algorithm.support.SelectionSort; /<|%yE&KhJ
import org.rut.util.algorithm.support.ShellSort; U`, 6 * MS
"Q@ronP(~
/** KBx6NU?;PO
* @author treeroot ^:^9l1]
* @since 2006-2-2 eg;~zv
* @version 1.0 Z`ID+
*/ 5B3G
@KR
public class SortUtil { o ,AAC
public final static int INSERT = 1; aBNc(?ri
public final static int BUBBLE = 2; dx MOn
public final static int SELECTION = 3; jCOIuw
public final static int SHELL = 4; )rn*iJ.e8
public final static int QUICK = 5; OEA&~4&{7
public final static int IMPROVED_QUICK = 6; 'vbsv T
public final static int MERGE = 7; n|9-KTe7|*
public final static int IMPROVED_MERGE = 8; :LF?
public final static int HEAP = 9; 5\:^y'g[
r1 !@hT
public static void sort(int[] data) { Vc&!OE
sort(data, IMPROVED_QUICK); I9_RlAd
} ;g+N&)n
private static String[] name={ lb4Pcdj
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~=M7 3U#
}; +hg3I8q:
fg_4zUGM+g
private static Sort[] impl=new Sort[]{ .,<1%-R34q
new InsertSort(), J\twZ>w~0
new BubbleSort(), y" RF;KW>
new SelectionSort(), $p#Bi-&
new ShellSort(), AG`L64B
new QuickSort(), Cjm`|~&e+
new ImprovedQuickSort(), IA8f*]?
new MergeSort(), &Cr: