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。 ] J|#WtS
插入排序: c47.,oTo
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package org.rut.util.algorithm.support; A*]sN8
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import org.rut.util.algorithm.SortUtil; `'bu8JK
/** mD?={*7%
* @author treeroot {HVsRpNEf
* @since 2006-2-2 |F~U
* @version 1.0 w(y
9y9r]
*/ criNeKa
public class InsertSort implements SortUtil.Sort{ 9!Fg1h=
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/* (non-Javadoc) d=g,s[FMm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !(j<Y0xo:
*/ =C^4nP-
public void sort(int[] data) { [zCKJR
int temp; A- #c1KU!
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^'b\OUty-
} `yRt?UQRS
} rPifiLl A>
} R!x
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} s|:j~>53
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冒泡排序: Cv`dK=n>
R?2T0^0
package org.rut.util.algorithm.support; 0o
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import org.rut.util.algorithm.SortUtil; 9}G<\y
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/** \@
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* @author treeroot 3X`N~_+
* @since 2006-2-2 2P|j<~JS
* @version 1.0 NV2$ >D
*/ OuPfB
public class BubbleSort implements SortUtil.Sort{ 5N2`e3:I
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/* (non-Javadoc) `4qt mbj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;T>.
*/ `2G%&R,k"D
public void sort(int[] data) { .;:dG
int temp; J
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for(int i=0;i for(int j=data.length-1;j>i;j--){ T&E'MB
if(data[j] SortUtil.swap(data,j,j-1); Z?."cuTt
} +OOmy
} v dU)
} ofCN[u
} FaG&U
srS5-fs
} ,esUls'nz'
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选择排序: 9*[!ux7h
yV)9KGV+:
package org.rut.util.algorithm.support; z)
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import org.rut.util.algorithm.SortUtil; r{Z4ifSl(
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/** _xo;[rEw8
* @author treeroot 0T:U(5Y9
* @since 2006-2-2 5^{).fig
* @version 1.0 %hRH80W|
*/ ev5m(wR
public class SelectionSort implements SortUtil.Sort { 0(^N
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8 a
/* )gxZ &n6
* (non-Javadoc) 9u_D@A"aC`
* G4n-}R&'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U/{#~P5s
*/ IG8I<+< o
public void sort(int[] data) { w.-J2%J
int temp;
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for (int i = 0; i < data.length; i++) { sN/8OLc
int lowIndex = i; CYhSCT!-?
for (int j = data.length - 1; j > i; j--) { R'B-$:u
if (data[j] < data[lowIndex]) { BIjkW.uf
lowIndex = j; $< .wQ8:Q
} D+4$l+\u
} G,@Jo[e
SortUtil.swap(data,i,lowIndex); :LTjV"f
} B5#>ieM*
} Y\9zjewc
AaDMX,
} p{O@ts:
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Shell排序: TmLfH
d
1Zgv+.
package org.rut.util.algorithm.support; N9PEn[t@
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import org.rut.util.algorithm.SortUtil; F%:o6mT
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/** ])Z p|?Y
* @author treeroot W!b'nRkq
* @since 2006-2-2 ,+'VQa"]
* @version 1.0 -^$IjK-N
*/ <
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public class ShellSort implements SortUtil.Sort{ ?#/~BZR!
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/* (non-Javadoc) I=4G+h5p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 207h$a,
*/ 6oq/\D$6~
public void sort(int[] data) { |h2=9\:]
for(int i=data.length/2;i>2;i/=2){ 81S0: =
for(int j=0;j insertSort(data,j,i); RnUud\T/
} hJ*#t<.<P;
} Ak@y"!wnM
insertSort(data,0,1); xc1-($Q,
} _#6*C%a x
3^Z@fC
/** R"O,2+@<.
* @param data c/-PEsk_TP
* @param j
l\{r-F
N
* @param i q.d
qr<
*/ cbv%1DT3
private void insertSort(int[] data, int start, int inc) { }?,Eb~q
int temp; zkHyx[L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v2f|%i;tq
} /k=krAz.
} (iu IeJ^Z
} 'M%uw85
9&OhCrxW-
} Y]+KsiOL
0
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快速排序: &B} ,xcNO
'17V7A/t
package org.rut.util.algorithm.support; fvZ[eJ
VI8/@A1Gv
import org.rut.util.algorithm.SortUtil; Ihx[S!:
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/** e+wINW
* @author treeroot *30T$_PiX|
* @since 2006-2-2 li%A?_/m<&
* @version 1.0 2%~+c|TH.)
*/ sO8F0@%aH(
public class QuickSort implements SortUtil.Sort{ UZ7ukn-
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/* (non-Javadoc) /3qKsv#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $NwPGy?%
*/ z v:o$2Z
public void sort(int[] data) { 3U[:N
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quickSort(data,0,data.length-1); 7G
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} j%fi*2uX
private void quickSort(int[] data,int i,int j){ }syU(];s
int pivotIndex=(i+j)/2; 3ZX#6*(}2
file://swap ;~Q`TWC
SortUtil.swap(data,pivotIndex,j); N=c{@h
Lv:;}
int k=partition(data,i-1,j,data[j]); a]0hB:
SortUtil.swap(data,k,j); a- 7RJ.
if((k-i)>1) quickSort(data,i,k-1); lLNI5C
if((j-k)>1) quickSort(data,k+1,j); $x(p:+TI\4
DWk2=cO
} <ua! ]~
/** (T =u_oe
* @param data MQlGEJ
* @param i LCok4N$o
* @param j Ksvk5r&y
* @return 5ih5=qX
*/ $!\Z_:
private int partition(int[] data, int l, int r,int pivot) { B1z7r0Rm,
do{ 9K=K,6
b
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =wFl(Q6J
SortUtil.swap(data,l,r); #[sJKW
} hF9y^Hx4
while(l SortUtil.swap(data,l,r); m%)S<L7
l
return l; !s[gv1
} 8,]wOxwqi
9oj0X>| 1
} nSq$,tk(
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改进后的快速排序: Y|-:z@n6C
y+$a}=cb0
package org.rut.util.algorithm.support; Ba9"IXKH
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import org.rut.util.algorithm.SortUtil; /_tN&[
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/** HK`r9frn
* @author treeroot <E7y:%L[Go
* @since 2006-2-2 ~!'T!g%C
* @version 1.0 F-2Q3+7$
*/ /D;cm
public class ImprovedQuickSort implements SortUtil.Sort { ^2"w5F
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private static int MAX_STACK_SIZE=4096; SQDc%I>b
private static int THRESHOLD=10; ,sltB3f
/* (non-Javadoc) P$"s*otr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b:x*Hjf
*/ m0JJPBp
public void sort(int[] data) { kvam`8SeL
int[] stack=new int[MAX_STACK_SIZE]; /1?{,Das=
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int top=-1; Mqm9i
int pivot; +"PME1
int pivotIndex,l,r; *N%)+-
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stack[++top]=0; NtQ#su$
stack[++top]=data.length-1; /X?%K't2r
^*WO*f>y
while(top>0){ 5[H1nC
@C
int j=stack[top--]; 3IQ-2 X--
int i=stack[top--]; 9oVprd>%@
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pivotIndex=(i+j)/2; +(oExp(!
pivot=data[pivotIndex]; &}VVr
,/UuXX
SortUtil.swap(data,pivotIndex,j); ab*O7v
[`bA,)y"
file://partition AnQUdU
l=i-1; -9$.&D|
r=j; \|$GB U
do{ Qe]aI7Ei
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >%85S >e
SortUtil.swap(data,l,r); U6~79Hnt
} 6#kK
while(l SortUtil.swap(data,l,r); K]ds2Kp&
SortUtil.swap(data,l,j); Sh 7ob2
X9#i!_*
if((l-i)>THRESHOLD){ *%2,=
p
stack[++top]=i; }Hb_8P
stack[++top]=l-1; sDyt 3xN
} +xBM\Dz8
if((j-l)>THRESHOLD){ /^, /o
stack[++top]=l+1; |/!RN[<
stack[++top]=j; C.+:FY.H
} mWH;-F*%
*NQsD C.J^
} g3\13<
file://new InsertSort().sort(data); -@/!u9l
insertSort(data); )h/Qxf
} LO)p2[5#R
/** (+;%zh-
* @param data EP8R[Q0_"
*/ W!
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private void insertSort(int[] data) { kTo{W]9]
int temp; Q6fPqEX=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KwhATYWQb
} iLf*m~Q
} USbFUHdDc
} v\Zq=,+
tdnd~ WSR
} (2r808^2
\7 }{\hY-
归并排序: &(~"OD
3 /LW6W|
package org.rut.util.algorithm.support; TU?$yNE
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import org.rut.util.algorithm.SortUtil; ~0Mw\p%}
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/**
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* @author treeroot 9f$3{ g{m
* @since 2006-2-2 CMHg]la
* @version 1.0 =v~$&@
*/ @<44wMp
public class MergeSort implements SortUtil.Sort{ Vet<,;Te
Lq{/r+tt/
/* (non-Javadoc) DO
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D~@lpcI
*/ !-q)9K?
public void sort(int[] data) { q8Rep
int[] temp=new int[data.length]; 9a{9|p>L
mergeSort(data,temp,0,data.length-1); Px?0)^"2
} fx/If
^Rmrre`uU
private void mergeSort(int[] data,int[] temp,int l,int r){ G3de<?K.[V
int mid=(l+r)/2; eLk:">kj
if(l==r) return ; &_$xMM,X
mergeSort(data,temp,l,mid); D?r% Y
mergeSort(data,temp,mid+1,r); !&Us^Q^
for(int i=l;i<=r;i++){ \D}$foHg
temp=data; 4j~WrdI*
} A|BN>?.t
int i1=l; WmZ,c_
int i2=mid+1; ]VK9d;0D
for(int cur=l;cur<=r;cur++){ xO;Qr.3PX
if(i1==mid+1)
fG|+!
data[cur]=temp[i2++]; BHZSc(-o
else if(i2>r) qnf\K}
data[cur]=temp[i1++]; bs_rw+
else if(temp[i1] data[cur]=temp[i1++]; (.~'\@
else .jRv8x b
data[cur]=temp[i2++]; *+<H4.W
H
} ,pVq/1
} F1&7m
)f$l
DWu~%U8
} "nC=.5/$
/{nZI_v#
改进后的归并排序: r }Nq"s<
wI2fCq(a0
package org.rut.util.algorithm.support; 2Q[q)u
z.
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import org.rut.util.algorithm.SortUtil; 1DM$FG_Z-
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/** 7dXh,sD
* @author treeroot l u V_
* @since 2006-2-2 n_-k <3
* @version 1.0 Y~I6ee,\
*/ =8x-+u5}rK
public class ImprovedMergeSort implements SortUtil.Sort { MpLn)
.;NoKO7)
private static final int THRESHOLD = 10; ??XtN.]7
wm/>_
/* K${CHKFf
* (non-Javadoc) u
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* _<l 9j;6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @wW)#!Mou
*/ I}1<epd ,
public void sort(int[] data) { }3y Q*<
int[] temp=new int[data.length]; Ui;PmwQc&
mergeSort(data,temp,0,data.length-1); ,\E5et4
} WvHy}1W
`/eh
private void mergeSort(int[] data, int[] temp, int l, int r) { K<7 Db4H
int i, j, k;
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int mid = (l + r) / 2; DP4l
%2m0
if (l == r) 0/?=FM>
return; k{pn~)xg
if ((mid - l) >= THRESHOLD) nokMS
mergeSort(data, temp, l, mid); %{^kmlO
else d15E$?ZLH
insertSort(data, l, mid - l + 1); BG2Z'WOH
if ((r - mid) > THRESHOLD) @!s(Zkpev
mergeSort(data, temp, mid + 1, r); BZ@v8y _TA
else Wx-rW
insertSort(data, mid + 1, r - mid); O<6!?1|KP
~aRcA|`
for (i = l; i <= mid; i++) { 7\JA8mm
temp = data; s&Qil07Vl
} !8Q9RnGn
for (j = 1; j <= r - mid; j++) { (1?k_!)T
temp[r - j + 1] = data[j + mid]; CiC@Z,ud`
} ,v*<yz/
int a = temp[l]; ED
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int b = temp[r]; =/F\_/Xw
for (i = l, j = r, k = l; k <= r; k++) { S[oRq
if (a < b) { xm}`6B^f
data[k] = temp[i++]; QzA/HP a
a = temp; 8rgNG7d
} else { %dA7`7j
data[k] = temp[j--]; b. oA}XP
b = temp[j]; 9A1w5|X
} O,!4
W\s
} 6'vt
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} ?kM53zbT#
`PvGfmYOl
/** T1pMe{
* @param data }8&L?B;90
* @param l O8S"B6?$~'
* @param i j8#B
*/ >l|dLyiae
private void insertSort(int[] data, int start, int len) { YfOO]{x,X
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oi}\;TG
} `(?x@Y>.Ht
} {"w4+m~+te
} |&a[@(N:zf
} ^)|1T#Tz
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堆排序: Og3bV_,"
(_O_zu8_
package org.rut.util.algorithm.support; 9:jZ3U
mbRN W
import org.rut.util.algorithm.SortUtil; B$cx
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sy.U]QG
/** NX4}o&mDwn
* @author treeroot 9b*1-1"
* @since 2006-2-2 aj*%$!SU+
* @version 1.0 zMQ|j_l9E
*/ Qr
l> A*
public class HeapSort implements SortUtil.Sort{ _w>9Z>PR
cYMlcwS
/* (non-Javadoc) 4`+hX'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oy/+uw^
*/ _jCjq
public void sort(int[] data) { +A,t9 3:k
MaxHeap h=new MaxHeap(); 7lz"^
h.init(data); jNA^
(|:
for(int i=0;i h.remove(); d>qxaX;
System.arraycopy(h.queue,1,data,0,data.length); |);-{=.OdQ
} ^~%zPlv
Skd,=r
private static class MaxHeap{ y~\K~qjd
)#l,RJ(
void init(int[] data){ &D 4Ci_6k
this.queue=new int[data.length+1]; _GK3]F0
for(int i=0;i queue[++size]=data; kGSB6
fixUp(size); H:HJHd"W
} L'Fy\K\
} A_WtmG_9
&u/T,jy`
private int size=0; zWh[U'6
]o]*&[C
private int[] queue; cCH2=v4hU
X%._:st
public int get() { 9
6'{ES9D
return queue[1]; V+kU^mI
} ^l\^\>8
8+<vumnw
public void remove() { e.|_=Gd2/
SortUtil.swap(queue,1,size--); Sy<s/x^`
fixDown(1); 4W''j[Y/
} ,,>b=r_r&
file://fixdown Q+\?gU]
private void fixDown(int k) { D,rs)
int j; &LS&O
while ((j = k << 1) <= size) { C%csQ m
if (j < size %26amp;%26amp; queue[j] j++; l;dZJ_Ut$
if (queue[k]>queue[j]) file://不用交换 Ysk,9MR(F
break; WwF4`kxT
SortUtil.swap(queue,j,k); S:En9E
k = j; BEzF'<Z
} 93npzpge
} ?>W4*8(
private void fixUp(int k) { i>C:C>~
while (k > 1) { # N.(ZP
int j = k >> 1; iPxhDn<B
if (queue[j]>queue[k]) 3S'juHTe
break; x`vIY-DS
SortUtil.swap(queue,j,k); |&t 2jD(
k = j; ui:
} \&p MF
} oiq7I@Y`x
j:9kJq>mv
} < g<Lf[n$
0}UJP
} {<HL}m@kQ
6"Km E}
SortUtil: _ s]=g
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package org.rut.util.algorithm; <z*SO
a
DVNGV
import org.rut.util.algorithm.support.BubbleSort; #Pulbk8
import org.rut.util.algorithm.support.HeapSort; @]#0jiS
import org.rut.util.algorithm.support.ImprovedMergeSort; vRLkz4z
import org.rut.util.algorithm.support.ImprovedQuickSort; i~dW)7
import org.rut.util.algorithm.support.InsertSort; ''Y}Q"
import org.rut.util.algorithm.support.MergeSort; ?5#Ng,8iT
import org.rut.util.algorithm.support.QuickSort; 64^dy V,;
import org.rut.util.algorithm.support.SelectionSort; J2`b:%[
import org.rut.util.algorithm.support.ShellSort; T7AFL=
/]Fs3uf
/** *@q+A1P7@
* @author treeroot QM1-w^
* @since 2006-2-2 |yi3y `f
* @version 1.0 Ok+zUA[Wu
*/ '|b {
public class SortUtil { q9RCXo>Y+1
public final static int INSERT = 1; d]OoJK9&&
public final static int BUBBLE = 2; bc"E=z
public final static int SELECTION = 3; }TZ5/zn.Dw
public final static int SHELL = 4; _,i]ra{%
public final static int QUICK = 5; oVsj
Q
public final static int IMPROVED_QUICK = 6; FKd5]am
public final static int MERGE = 7; L)'JkX J
public final static int IMPROVED_MERGE = 8; u:pdY'`"#
public final static int HEAP = 9; " -4V48ci
66?!"w
public static void sort(int[] data) { mAFqA
sort(data, IMPROVED_QUICK); R$&|*0
} |i"A!rW
private static String[] name={ sD$
\!7:b
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )""i"/Mn
}; OYJy;u3"
bh&,*Y6=
private static Sort[] impl=new Sort[]{ ~y}M
GUEC
new InsertSort(), z[DUktZl
new BubbleSort(), URDb
new SelectionSort(), ,@=qaU
new ShellSort(), O~g_rcG
new QuickSort(), Wiqy".YY
new ImprovedQuickSort(), dhN[\Z%
new MergeSort(), Ru
Q\H0pr
new ImprovedMergeSort(), p;:tzH\l
new HeapSort() 2*Uwp;0
}; O`O{n_o^u
aC>r5b#:
public static String toString(int algorithm){ TR rO-
return name[algorithm-1]; 0K'lr;
} <JHU*Z
V; 1r
public static void sort(int[] data, int algorithm) { rm>;B
*;
impl[algorithm-1].sort(data); v#.FK:u}
} 36JVnW;
BbZ-dXC<
public static interface Sort { D>,]EE-
public void sort(int[] data); !Y-MUZ$f
} kwdmw_
^ 3LM%B
public static void swap(int[] data, int i, int j) { h)q:nlKUW
int temp = data; PG9won5_
data = data[j]; !%NxSJ
data[j] = temp; PGMu6$
} g/so3F%v
.
} D5)qmu