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。 A9.;>8!u
插入排序: /T4VJ{D
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package org.rut.util.algorithm.support; >T$7{
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import org.rut.util.algorithm.SortUtil; c8!j6\dC*
/** G:){^Z?
* @author treeroot 7j{Te)"
* @since 2006-2-2 6;[1Jz]?i
* @version 1.0 @<%oIE~]F
*/ 4I+.^7d
public class InsertSort implements SortUtil.Sort{ jFS'I*1+
L)=8mF.
/* (non-Javadoc) oO}>i0ax*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y~}QJ+`?
*/ AIf[W">\
public void sort(int[] data) { \_)02ZT:
int temp; }$&);7(w
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -!JlM@
} sd]0Hx[
} d"Ml^rAn
} ]VmzKA|h+
`=PB2'
} ?cA8P.?^A
WCWSLEAza
冒泡排序: 0fZ:")&4,
6Eij>{v
package org.rut.util.algorithm.support; yDDghW'\WU
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import org.rut.util.algorithm.SortUtil; m.|qVN
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/** O>kXysM v>
* @author treeroot &3+1D1"y/
* @since 2006-2-2 D6"~fjHh
* @version 1.0 Qj{$dqmDN
*/ h,Y{t?Of
public class BubbleSort implements SortUtil.Sort{ $ $W{HsX
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p
/* (non-Javadoc) ID_|H?.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X=-gAutfE=
*/ _wIBm2UO
public void sort(int[] data) { ~t1O]aO(
int temp; 0 m)-7@
for(int i=0;i for(int j=data.length-1;j>i;j--){ h0&>GY;i
if(data[j] SortUtil.swap(data,j,j-1); n$}R/*
} )UxQf37
} `bBfNI?3d*
} /7!_un9
} 1D3dYVE
}D&"z8mP
} Ew)n~!s
7<Z~\3x
选择排序: a
5~G
Y#Sd2h,^X
package org.rut.util.algorithm.support; QYODmeu
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import org.rut.util.algorithm.SortUtil; FkB6*dm-
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/** _#y(w%
* @author treeroot FB?q/ _
* @since 2006-2-2 *FI5z[8,
* @version 1.0 jpPdjQ
*/ E.En$'BvB
public class SelectionSort implements SortUtil.Sort { EU&6Tg
~_/<PIm
/* vfk7J5y
* (non-Javadoc) e|OG-t[$*
* lN*1zM<6;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pGZl.OI
*/ 62k9"xSH
public void sort(int[] data) { mfp`Iy"}+
int temp; 8\W3FvQ
for (int i = 0; i < data.length; i++) { OXa5Jg}=
int lowIndex = i; _7t|0aNo\
for (int j = data.length - 1; j > i; j--) { '>S8t/
if (data[j] < data[lowIndex]) { Q
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lowIndex = j; TA-(_jm
} 945
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} X=*Yzz}
SortUtil.swap(data,i,lowIndex); )\:lYI}Wpm
} a3(7{,Ew
} 3=G5(0
+lk\oj$S+
} z_[3IAZ
q:D0$YY0
Shell排序: %i]uW\~U
,]>`guDV
package org.rut.util.algorithm.support; sEgeS9a{
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import org.rut.util.algorithm.SortUtil; =km-`}I,
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/** G74a9li@
* @author treeroot EnsNO_"e|
* @since 2006-2-2 ?
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* @version 1.0 )sz2 9
*/ \CEnOq
public class ShellSort implements SortUtil.Sort{ v2W"+QS}u
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/* (non-Javadoc) d
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :n%sU*'T
*/ (VF4FC
public void sort(int[] data) { y 1jGf83
for(int i=data.length/2;i>2;i/=2){ 9DP75 ti
for(int j=0;j insertSort(data,j,i); [>aoDJ
} \Im\*A
} -+S~1`0
insertSort(data,0,1); 5k7(!
} LBiv]3
VQW)qOR9
/** *M\i4FO8
* @param data WriJco<v
* @param j *{p&Fy55
* @param i `QyALcO
*/ =QxE-)v
private void insertSort(int[] data, int start, int inc) { ] l qFht
int temp; RWm Q]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); '%|20j
} yZPFo
} w
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} Xy(SzJ%
5l7L@Ey
} Xk9r"RmiOb
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快速排序: gm%bxr@X~
S5[RSAbf*t
package org.rut.util.algorithm.support; W;AWO0+
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import org.rut.util.algorithm.SortUtil; x2IU PM
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/** 3x;y}:wQa
* @author treeroot @ 6V H%
* @since 2006-2-2 u g$\&rM>
* @version 1.0 dmMr8-w
*/ QIz N#;g
public class QuickSort implements SortUtil.Sort{ hZ /
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/* (non-Javadoc) .)pRB7O3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hn]n]wsLy
*/ kG7,1teMk
public void sort(int[] data) { Y`_X@Q
quickSort(data,0,data.length-1); :8!3*C-=
} GbrPtu2{@V
private void quickSort(int[] data,int i,int j){ a>jI_)L
int pivotIndex=(i+j)/2; :g:h 0'G
file://swap ~^5n$jq
SortUtil.swap(data,pivotIndex,j); z?> y
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int k=partition(data,i-1,j,data[j]); R{y{
SortUtil.swap(data,k,j); [q{Txe
if((k-i)>1) quickSort(data,i,k-1); 48NXj\L[y
if((j-k)>1) quickSort(data,k+1,j); ua>~$`@gX
N~<}\0
} ?)QBJ9F
/** +T-zf@j
* @param data N#!1@!2BN
* @param i &"6ktKrIg
* @param j
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* @return 8!`.%)- 4
*/ eeTaF!W
private int partition(int[] data, int l, int r,int pivot) { fB"gM2'
do{ teNQUIe-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8PVs!?Nne
SortUtil.swap(data,l,r); F,2#;t4
} ?-& D'
while(l SortUtil.swap(data,l,r); tnbs]6
return l; ,
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} !*.
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} 4J2F>m40
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改进后的快速排序: HD^~4\%
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package org.rut.util.algorithm.support; f9=X7"dzP
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import org.rut.util.algorithm.SortUtil; rd~W.b_b
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/**
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* @author treeroot ;4#8#;
* @since 2006-2-2 NJ!#0[@C
* @version 1.0 q x }fn/:
*/ bjX$idL
public class ImprovedQuickSort implements SortUtil.Sort { i4Cb&h^
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private static int MAX_STACK_SIZE=4096; _ShJ3\,K
private static int THRESHOLD=10; BFu9KS+@)
/* (non-Javadoc) `l#$l3v+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #{cpG2Rs
*/ O*CX@Ne
public void sort(int[] data) { 8=AKOOU7>
int[] stack=new int[MAX_STACK_SIZE]; :2d9ZDyD
*fX)=?h56
int top=-1; 1h0ohW
int pivot; ~?+m=\
int pivotIndex,l,r; #e|kA&+8M
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stack[++top]=0; 5i&V ~G
stack[++top]=data.length-1; KA2B3\
?kefRev<#h
while(top>0){ v@SrEmg
int j=stack[top--]; 'J2P3t
int i=stack[top--]; D4-U[l+K>
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pivotIndex=(i+j)/2; [6qP;
pivot=data[pivotIndex];
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+ zPg`/
SortUtil.swap(data,pivotIndex,j); _(
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file://partition /T'nY{
l=i-1; bv];Gk*Z-
r=j; W5g!`f
do{ \Nyxi7
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _9
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SortUtil.swap(data,l,r); I2Rp=L:z5
} l0_O<
while(l SortUtil.swap(data,l,r); WR1,J0UU6
SortUtil.swap(data,l,j); Lj,%pz J
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if((l-i)>THRESHOLD){ l!'iLq"K(
stack[++top]=i; K.zs;^
stack[++top]=l-1; }H.vH
} ((q(Q9(F
if((j-l)>THRESHOLD){ :]jtV~E\
stack[++top]=l+1; __npX_4%S
stack[++top]=j; !IU*Ayg
} 4(IP
r&RSQHa)
} r"{1H
file://new InsertSort().sort(data); zb$U'D_-f
insertSort(data); r2w7lf66!
} y9<Fv|Ric
/** fXj
* @param data mYX) =B{
*/ -]%@,L^@
private void insertSort(int[] data) { C3gz)!3
int temp; %9M49s
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gV BV@v!W
} M?lr#}d
} {D< ?.'
} ny}utO
".IhV<R
} @RW%EXKt
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归并排序: v<W++X7z
`Fr$q1qae{
package org.rut.util.algorithm.support; *^()el,d
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import org.rut.util.algorithm.SortUtil; -`&;3
7
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/** pDQ,v"
* @author treeroot f0+
* @since 2006-2-2 gw:BKR'o
* @version 1.0 P])O\<)J
*/ Sq>UMfl&
public class MergeSort implements SortUtil.Sort{ |Sm/Uq(c
KW\`&ki
/* (non-Javadoc) YR2/`9s\QJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S0cO00_ob
*/ 5B6:pH6e
public void sort(int[] data) { VXp
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int[] temp=new int[data.length]; u#<]>EtbB
mergeSort(data,temp,0,data.length-1); ]LjW,b"
} r>\.b{wI
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private void mergeSort(int[] data,int[] temp,int l,int r){ v80e]M!
int mid=(l+r)/2; '"Gi&:*nQ<
if(l==r) return ; e6Y0G,K
mergeSort(data,temp,l,mid); t*#T~3p
mergeSort(data,temp,mid+1,r); ::6@mFL R
for(int i=l;i<=r;i++){ D@e:Fu1\R
temp=data; KMa?2cJH#
} cqDnZ`|6
int i1=l; 7JbrIdDl|
int i2=mid+1; "\
md
for(int cur=l;cur<=r;cur++){ ryPzq}#
if(i1==mid+1) $v,_8{ !
data[cur]=temp[i2++]; 3c)xNXq m
else if(i2>r) CAfG3;
data[cur]=temp[i1++]; GmFNL/x8-v
else if(temp[i1] data[cur]=temp[i1++]; r.[k D"l
else ?~"RCZ[;.f
data[cur]=temp[i2++]; ~7|z 2L
} ~p&sd)
} 3 }XS|Y
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} .3#Tw'% G
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改进后的归并排序: >
ewcD{bt
Pg7/g=Va
package org.rut.util.algorithm.support; 8l6R.l
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import org.rut.util.algorithm.SortUtil; 6;Bqu5_Cj
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/** $P$OWp?b
* @author treeroot t5S S]
* @since 2006-2-2 TeHR,GB
* @version 1.0 p4=^
UP
*/ #H|]F86 (
public class ImprovedMergeSort implements SortUtil.Sort { `J;_!~:
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private static final int THRESHOLD = 10; yfj<P/aA+
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/* EG,RlmcPp
* (non-Javadoc) BO^e.iB/
* :^K|u^_>P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;tO (,^
*/ =Z 2sQQVS
public void sort(int[] data) { >Tw|SK+3
int[] temp=new int[data.length]; 3/iGSG`
mergeSort(data,temp,0,data.length-1); q*>`HTPcU
} =73wngw
&@yW<<
private void mergeSort(int[] data, int[] temp, int l, int r) { E$gcd#rT
int i, j, k; _15r!RZ:1
int mid = (l + r) / 2; }JS?42CTaV
if (l == r) I<DS07K
return; UPH:$Fk&
if ((mid - l) >= THRESHOLD) YQ&Xd/z-
mergeSort(data, temp, l, mid); >>p3#~/
else X=lOwPvP
insertSort(data, l, mid - l + 1); mD tD7FzJ
if ((r - mid) > THRESHOLD) S>nM&758
mergeSort(data, temp, mid + 1, r); ydw')Em
else bV}43zI.
insertSort(data, mid + 1, r - mid); n(&6E3ZcI
#,Rmu
for (i = l; i <= mid; i++) { wT;D<rqe`
temp = data; ^b'[81%
} 1N2s[ \q$
for (j = 1; j <= r - mid; j++) { 0e&Vvl4DK
temp[r - j + 1] = data[j + mid]; H'GyWG|Wx
} d+$a5 [^9
int a = temp[l]; k \|Hd"T
int b = temp[r]; $w{#o E
for (i = l, j = r, k = l; k <= r; k++) { G0^NkH,k
if (a < b) { k/Z}nz
data[k] = temp[i++]; 't]=ps
a = temp; VUk2pEGO.
} else { u9 J;OsnHK
data[k] = temp[j--]; sa{X.}i%E
b = temp[j]; t\X5B ]EZ
} zgV{S
Qo
} K_(o
D
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} 7Q2"]f,$CQ
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/** !h4L_D0
* @param data <^{|5u
* @param l {x
s{
* @param i >O?5mfMK
*/ ,*Jm\u
private void insertSort(int[] data, int start, int len) { r!'\$(m E
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); b+,u_$@B
} f3h^R20qmO
} 5^+>*z
} Mz_*`lRN
} SnRk` 5t
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堆排序: s%GhjWZS
CNQ>J`4
package org.rut.util.algorithm.support; 3+rud9T
6"b =aPTi
import org.rut.util.algorithm.SortUtil; ^h1EE=E"
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/** l*rli[No
* @author treeroot dX?8@uzu
* @since 2006-2-2 %i:Sf
* @version 1.0 Z7lv|m&
*/ D<78Tm
x
public class HeapSort implements SortUtil.Sort{ 2Ck'A0d
'#L.w6<B
/* (non-Javadoc) *DcJ).
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XDRw![H,~
*/ v!JQ;OX
public void sort(int[] data) { x 8|sdZFxo
MaxHeap h=new MaxHeap(); &z8I@^<
h.init(data); e@|/, W
for(int i=0;i h.remove(); 5ELKL#(
System.arraycopy(h.queue,1,data,0,data.length); 5srj|'ja
} n$&xVaF|
[oqb@J2
private static class MaxHeap{ !N ua
))JbROBU,
void init(int[] data){ {N!Xp:(<7_
this.queue=new int[data.length+1]; z]:{ruvH
for(int i=0;i queue[++size]=data; XpFW(v
fixUp(size); 8K$q6V%#
} _\uyS',
} @
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private int size=0; X]
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private int[] queue; [Vzp D 4
n o).70K
public int get() { f}qR'ognUu
return queue[1]; {kVhht]X
} 9=D09@A%e
W(.q.Sx>
public void remove() { 6_1v~#
SortUtil.swap(queue,1,size--); 6d4)7PL
fixDown(1); jG~zpZh
} )4u6{-|A
file://fixdown *c<0cHv*
private void fixDown(int k) { A"ApWJ3
int j; NFxs4:]
RT
while ((j = k << 1) <= size) { ':Avh|q3N
if (j < size %26amp;%26amp; queue[j] j++; lM/)<I\8
if (queue[k]>queue[j]) file://不用交换 _ljdo`j#N
break; 2g?O+'JD
SortUtil.swap(queue,j,k); *% 6NuZ
k = j; vOMmsU F
} q3Tp/M.
} o$disJ
private void fixUp(int k) { bUJ5jkZ)
while (k > 1) { UM[<v9NWE
int j = k >> 1; n^kszIu~
if (queue[j]>queue[k]) "'i" @CR
break; (?[^##03MN
SortUtil.swap(queue,j,k); (x"TM),Q
k = j; tw{V7r~n
} r92C^h0
} y<#?z 8P
B}Lz#'5_
} #*r u*
c^Y&4=>T
} Ro1b (+H
@!;EW
R]
SortUtil: AC'$~4
7=Vs1TVc
package org.rut.util.algorithm; o'uv5asdb
k#*tf:R
import org.rut.util.algorithm.support.BubbleSort; =6o,{taZ.~
import org.rut.util.algorithm.support.HeapSort; n+Bh-a V
import org.rut.util.algorithm.support.ImprovedMergeSort; @t W;(8-
import org.rut.util.algorithm.support.ImprovedQuickSort; CY{`IZ
import org.rut.util.algorithm.support.InsertSort; qQzf&"
import org.rut.util.algorithm.support.MergeSort; <0?h$hf4c
import org.rut.util.algorithm.support.QuickSort; /<J&ZoeJB
import org.rut.util.algorithm.support.SelectionSort; iP nu *29
import org.rut.util.algorithm.support.ShellSort; 7*D*nY4+
G?`x$U U
/** Hjho!np
* @author treeroot `/+%mKlC|[
* @since 2006-2-2 SiBhf3
* @version 1.0 Ujw J}j
*/ 7x,c)QES`
public class SortUtil { wTT_jyH)
public final static int INSERT = 1; s*blZdP
public final static int BUBBLE = 2; +s(JutC
public final static int SELECTION = 3; P[|FK(l
public final static int SHELL = 4; IO, kGUS
public final static int QUICK = 5; jSY&P/[xb
public final static int IMPROVED_QUICK = 6; M@LI(;
public final static int MERGE = 7; IIn0w2:i
public final static int IMPROVED_MERGE = 8; m@qM|%(0x
public final static int HEAP = 9; +W=
*TacVp
public static void sort(int[] data) { zP[_ccW@
sort(data, IMPROVED_QUICK); hX?rIx
} ML6V,-KU
private static String[] name={ eh@6trzp=
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v7;zce/~
}; M!KHBr
t")+L{
private static Sort[] impl=new Sort[]{ @ P[o
new InsertSort(), ,(%?j]_P2
new BubbleSort(), OI=LuWGQE1
new SelectionSort(), n9qO;X4&
new ShellSort(), ]}K\&ho2
new QuickSort(), m5m'ByX(*
new ImprovedQuickSort(), u9d4zR
new MergeSort(), @PYCl
new ImprovedMergeSort(), CA0SH{PdW&
new HeapSort() c^N'g!on
}; 8XwZJ\5
KK}?x6wV0,
public static String toString(int algorithm){ +Xb )bfN
return name[algorithm-1]; gnAM}
} h"mG \xi
iG:9uDY
public static void sort(int[] data, int algorithm) { bp'qrcFuiL
impl[algorithm-1].sort(data); u!&w"t61Nd
} D)yCuw{M:
P>*g'OK^!G
public static interface Sort { q T16th[D
public void sort(int[] data); [31vx0$_p
} m\3r<*q6
.d\<}\zZ7J
public static void swap(int[] data, int i, int j) { .GJl@==~1
int temp = data; xB&kxW.;
data = data[j]; a6UW,n"n
data[j] = temp; fB\+.eN
} /(`B;?
} U#o5(mK