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。 O=jN&<rb
插入排序: '0+$ m=
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package org.rut.util.algorithm.support; +CTmcbyOi
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import org.rut.util.algorithm.SortUtil; ~r`Wr`]_ z
/** nJVp.*S
* @author treeroot Xi~9&ed#$i
* @since 2006-2-2 +*t|yKO>[
* @version 1.0 \OHv|8!EI@
*/ c#q"\"
public class InsertSort implements SortUtil.Sort{ nN ~GP"}
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/* (non-Javadoc) >x'bZ]gm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } 21j
*/ =&0U`P$`
public void sort(int[] data) { "r-l8r,
int temp; $ly0h W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Sa}D.SBg
} XN;/nU
} J#7(]!;F
} y-cw~kNPP3
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} d1NE% hg3
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冒泡排序: La}o(7=s
g[!Cj,
package org.rut.util.algorithm.support; >}F? <JB
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import org.rut.util.algorithm.SortUtil; &"j@79Ym1~
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/** fSV5
* @author treeroot D9ywg/Q91
* @since 2006-2-2 U,3d) ]Zy&
* @version 1.0 zH+<bEo=1=
*/ j_pw^I$C
public class BubbleSort implements SortUtil.Sort{ ]hUKuef
^I./L)0=}
/* (non-Javadoc) cMtJy"kK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fm6]CU1^
*/ /\~W$.c
public void sort(int[] data) {
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int temp; dP3VJ3+
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for(int i=0;i for(int j=data.length-1;j>i;j--){ <`mOU}0)
if(data[j] SortUtil.swap(data,j,j-1); F`D9Zfd
} W^ClHQ"Iy
} v|To+P6b
} D'?]yyrf
} t;XS;b%
ct.Bg)E
} &U0WkW
f<=^ 4a
选择排序: q @*UUj@
Hc
/wta
package org.rut.util.algorithm.support; +cw{aI`a8
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import org.rut.util.algorithm.SortUtil; "DzGBu\
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/** i/M+t~
* @author treeroot S r[IoF)
* @since 2006-2-2 aKD;1|)
* @version 1.0 k2wBy'M.'
*/ SZI7M"gf/+
public class SelectionSort implements SortUtil.Sort { -|$* l
Q
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/* ]t7ClT)n!
* (non-Javadoc) 5GUH;o1m
* 7~lB}$L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n=r=u'oi
*/ sV&`0N
public void sort(int[] data) { }P16Xb)p
int temp; 4=UI3 2v3
for (int i = 0; i < data.length; i++) { \4C)~T:*
int lowIndex = i; Fv;u1Atiw
for (int j = data.length - 1; j > i; j--) { S{Rh'x\B
if (data[j] < data[lowIndex]) { =sL(^UISl
lowIndex = j; t0+t9w/fTP
} cyDiA(ot&
} .k
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SortUtil.swap(data,i,lowIndex); my=*zziN
} 0U9+
} E#8J+7
57'q;I
} z{@=_5;
F: f2s:<
Shell排序: R<_mK33hd
+|)zwe
package org.rut.util.algorithm.support; d|R
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import org.rut.util.algorithm.SortUtil; jw%fN!?
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/** mMn2(
* @author treeroot #^"hqNwA
* @since 2006-2-2 Cq
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* @version 1.0 @F>[DW]O
*/ 30t:O&2<
public class ShellSort implements SortUtil.Sort{ [>Ikitow
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/* (non-Javadoc) 5ENov!$H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [B.W1 GL!
*/ zUvB0\{q
public void sort(int[] data) { (*LTqC
for(int i=data.length/2;i>2;i/=2){ hQ\#Fhu7
for(int j=0;j insertSort(data,j,i); r[Z g 2
} k?!TjBKm
} X%RQB$
insertSort(data,0,1); bWhJ^LD
} lqhHbB
?*B;514
/** 6nM
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* @param data F Bd+=bx,Z
* @param j h #$_<U
* @param i X20<r?^,,
*/ ?z*W8b]'
private void insertSort(int[] data, int start, int inc) { EU`'
8*4
int temp; ;igEIGR
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D'U\]'.
} $`cy'ZaF
} nS?S6G5h
} %Z-Tb OX
s?1-$|*
} D3,t6\m
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快速排序: s>[vT?
N^nDWK
package org.rut.util.algorithm.support; M%nZu{
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import org.rut.util.algorithm.SortUtil; 7`j|tb-
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/** fSgGQ
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* @author treeroot ^MF=,U'8
* @since 2006-2-2 7KYF16A4
* @version 1.0 #,Fx@3y\a
*/ x_>"Rnv:K
public class QuickSort implements SortUtil.Sort{ +4p2KYO
:6HiP&<
/* (non-Javadoc) =}6Z{}(TT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K~9 jin
*/ r;5 AY
public void sort(int[] data) { G5X|JTzpu<
quickSort(data,0,data.length-1); }b\ipA,~
} d-_93
private void quickSort(int[] data,int i,int j){ t 's5~
int pivotIndex=(i+j)/2; -&HoR!af
file://swap `zV-1)=
SortUtil.swap(data,pivotIndex,j); `s|\"@2
$$)<(MP3
int k=partition(data,i-1,j,data[j]); (\AszLW
SortUtil.swap(data,k,j); /Wta$!X{-
if((k-i)>1) quickSort(data,i,k-1); f/|a?n2\hm
if((j-k)>1) quickSort(data,k+1,j); )G F
)gm \e?^
} RvZryA*vu
/** & t @
* @param data @b(gjOE
* @param i Av[|.~g
* @param j A`mf 8'nTG
* @return Iclan\q#y
*/ )l/C_WEK
private int partition(int[] data, int l, int r,int pivot) { 3k|~tVM
do{ 2oNPR+
-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); itvy[b-*
SortUtil.swap(data,l,r); ".7KEnx
} #0$eTdx#
while(l SortUtil.swap(data,l,r); c_j)8
return l; w{UKoU
}
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okW)s*7
} Ij,?G*
vU=k8
改进后的快速排序: u8)r
W
W(3~F2
package org.rut.util.algorithm.support; 1Y"y!\t7G
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import org.rut.util.algorithm.SortUtil; zz''FmedF
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/** (]#
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* @author treeroot g\mrRZ/?
* @since 2006-2-2 0.,&B5)
* @version 1.0 f0s<Y
*/ #._6lESK
public class ImprovedQuickSort implements SortUtil.Sort { T;vPR,]rz
>ww1:Sn
private static int MAX_STACK_SIZE=4096; 97=YFK~*
private static int THRESHOLD=10; 5v03<m0`y
/* (non-Javadoc) Ik2szXh[J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J}` $WL:
*/ 7|?@\ZE
public void sort(int[] data) { GA@Q:n8UuR
int[] stack=new int[MAX_STACK_SIZE]; hdWp
V,%5
hl'&
int top=-1; 2nz'/G
int pivot; t~=@r9`S
int pivotIndex,l,r; ,'0oj$~S:
Rhxm)5 +
stack[++top]=0; [T&y5"@
stack[++top]=data.length-1; Zvw3C%In
+_K;Pj]x
while(top>0){ wUPywV1UO
int j=stack[top--]; %>}7$Y%
int i=stack[top--]; m&vYZ3vK[
D&lXi~Z%.
pivotIndex=(i+j)/2; [==Z1Q;=
pivot=data[pivotIndex]; h 7P?n.K
u~Cqdr5
\l
SortUtil.swap(data,pivotIndex,j); D,R2wNF
FbT&w4Um=
file://partition Q`fA)6U
l=i-1; ]cY'6'}Hz
r=j; a5+v)F/=
do{ u>Kvub
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OehB"[;+
SortUtil.swap(data,l,r); }U1{&4Ph
} bWzc=03
while(l SortUtil.swap(data,l,r); 2PW3S{D t
SortUtil.swap(data,l,j); R$3+ 01j|
uy%PTi+A
if((l-i)>THRESHOLD){ e?fjX-
stack[++top]=i; QU;C*}0Zl
stack[++top]=l-1; nff ]Y$FB
} T1TZ+\
if((j-l)>THRESHOLD){ zL{@LHP
stack[++top]=l+1; h$h`XBVZe;
stack[++top]=j; ?Qp_4<(5
} 25KZe s)
7oSuLo=
} 7im;b15j`'
file://new InsertSort().sort(data); $f\-.7OD
insertSort(data); c8W=Is`
} `-\JjMSQ1
/** AV`7>@
* @param data yXmp]9$
*/ JFkjpBS
private void insertSort(int[] data) { +u.L6GcB
int temp; 0Jif.<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9e6{(
} j<5R$^?U
} gQGiph |
} \OB3gnR
7K4%`O
} [K QZHIe
<C xet~x
归并排序: <H#K `|Ag
9(]j
e4Cn
package org.rut.util.algorithm.support; (\
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s2kynQ#a
import org.rut.util.algorithm.SortUtil; |U0@(H
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/** -|mRJVl8
* @author treeroot } 4^UVdz
* @since 2006-2-2 ;I'["k%
* @version 1.0 ybkN^OEJ
*/ dy'?@Lj;
public class MergeSort implements SortUtil.Sort{ ["9$HL
&Gl&m@-j
/* (non-Javadoc) C I0^eaFs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "yk%/:G+
*/ i{0_}"B
public void sort(int[] data) { omu&:)
g
int[] temp=new int[data.length]; : Tl?yGF
mergeSort(data,temp,0,data.length-1); G}*B`m
} Uk4">]oct
&n
wg$z{Y
private void mergeSort(int[] data,int[] temp,int l,int r){ mYvm_t9
int mid=(l+r)/2; J>Ha$1}u/
if(l==r) return ; &B
C#u.^!
mergeSort(data,temp,l,mid); ~Otf
" <
mergeSort(data,temp,mid+1,r); \h4y,sl
for(int i=l;i<=r;i++){ ualtIHXK)
temp=data; ){~.jP=-#
} hFv}JQJw<
int i1=l; DEhA8.v
int i2=mid+1; 2}-W@R
for(int cur=l;cur<=r;cur++){ PHkvt!uH
if(i1==mid+1) 'cv/"26#
data[cur]=temp[i2++]; 3[4]G@
else if(i2>r) cCIEG e6
data[cur]=temp[i1++]; +l\Dp
else if(temp[i1] data[cur]=temp[i1++]; `1gsrHi4N
else @UX`9]-P
data[cur]=temp[i2++]; :C5N(x
} "-sz7}Mb
} o\N}?Z,Kk
B=7L+6
} iuEdm:pW
6gXc-}dp
改进后的归并排序: AyDK-8a
v)06`G
package org.rut.util.algorithm.support; w# ['{GL
hT[O5
import org.rut.util.algorithm.SortUtil; ~JJv 2
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/** NbdaP{{
* @author treeroot _wMz+<7bY
* @since 2006-2-2 {<lV=0]
* @version 1.0 !TcjB;q'
*/ 6*E7}
public class ImprovedMergeSort implements SortUtil.Sort { |8"HTBb\CW
-9mh|&z`
private static final int THRESHOLD = 10; G+ToZ&f@
8Vx'sJ>r4
/* qXW5_iX
* (non-Javadoc) 9ccEF6o0=
* fXN;N&I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s$Mj4_p3l
*/ YeQX13C"Z
public void sort(int[] data) { H:`r!5&Qb5
int[] temp=new int[data.length]; ][Kj^7/
mergeSort(data,temp,0,data.length-1); <M=K!k
} lPH]fWt<
I?=Q
*og
private void mergeSort(int[] data, int[] temp, int l, int r) { \K=Jd#9c
int i, j, k; rfk';ph
int mid = (l + r) / 2; yR&E6o.$z
if (l == r) j JW0a\0
return; M:A7=rO~
if ((mid - l) >= THRESHOLD) TSOt$7-
mergeSort(data, temp, l, mid); wXP1tM8T
else Ut<_D8Tzx
insertSort(data, l, mid - l + 1); ~o+u: ]
if ((r - mid) > THRESHOLD) 3Cpix,Dc
mergeSort(data, temp, mid + 1, r); /)|*Vzu
else _M?:N:e
insertSort(data, mid + 1, r - mid); \ZA%"F){
tw;`H( UZ^
for (i = l; i <= mid; i++) { b3Do{1BV
temp = data; :)+cI?\#
} nD!^0?
for (j = 1; j <= r - mid; j++) { RtSk;U1
temp[r - j + 1] = data[j + mid]; :U~[%]
} hHdC/mR
int a = temp[l]; 9 eP @} C6
int b = temp[r]; "`lRX
for (i = l, j = r, k = l; k <= r; k++) { $Uzc
if (a < b) { "B.l j)
data[k] = temp[i++]; Ji=E 1R
a = temp; bH&[O`vf
} else { vJYy` k^Y
data[k] = temp[j--]; ;yH/GN#O
b = temp[j]; b.$Gc!g
} UlyX$f%2
} vHWw*gg(/E
} 7-)Y\D
}lhJt|q c
/** +&|WC2#
* @param data t.NG]ejZ
* @param l K{N#^L!
* @param i /QTGZb
*/ ) ><{A
private void insertSort(int[] data, int start, int len) { =\tg$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gCd9"n-e
} Jyvc(~x
} Y]P]^3
} r3#H]c
} B6,"S5@
MSw/_{
堆排序: zL1H[}[z+
w+PbT6;
package org.rut.util.algorithm.support; Uc\\..Cf
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import org.rut.util.algorithm.SortUtil; lepgmQ|oY
>pr{)bp G
/** X=-pNwO
* @author treeroot oMcX{v^"
* @since 2006-2-2 6Vi #O^>
* @version 1.0 Ip|7JL0Z
*/ !DD|dVA{
public class HeapSort implements SortUtil.Sort{ xj(&EGY:
Ot5
$~o
/* (non-Javadoc) A\gj\&B0"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JQ!D8Ut
*/ u[y>DPPx
public void sort(int[] data) { ACc.&,!IZ
MaxHeap h=new MaxHeap(); #|)GarDG
h.init(data); LKtr>u
for(int i=0;i h.remove(); (',G
Ako
System.arraycopy(h.queue,1,data,0,data.length); g;Bq#/w
} .F&\xa{
zAS&L%^ tV
private static class MaxHeap{ \%f4)Qb
G
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void init(int[] data){ $wAVM/u&
this.queue=new int[data.length+1]; ]Ocf %(
for(int i=0;i queue[++size]=data; |v:8^C7
fixUp(size); RR*<txdN
} e$fxC-sZ
} =D<46T=(RB
g.Z>9(>;Y
private int size=0; PKty'}KF
E XEae?
private int[] queue; Jx(%t<2
bo`w(h_
public int get() { kL{2az3"c
return queue[1]; R@u6mMX{N,
} ;VNwx(1l`
^;!A`t
public void remove() { bw ' yX
SortUtil.swap(queue,1,size--); /!ux P~2U
fixDown(1); U_y)p Cd
} LEKN%2
file://fixdown |U>BXX P
private void fixDown(int k) { `b+f^6SJn
int j; n(0O'nS^
while ((j = k << 1) <= size) { eOE7A'X
if (j < size %26amp;%26amp; queue[j] j++; W:ih#YW_F
if (queue[k]>queue[j]) file://不用交换 0,{Dw9W:
break; g< M\zD
SortUtil.swap(queue,j,k); w%g@X6
k = j; 8yF15['
} ,g;~:
} "9>~O`l,
private void fixUp(int k) { dyC: Mko=
while (k > 1) { D
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int j = k >> 1; dc|"34;^"
if (queue[j]>queue[k]) 2X&~!%-
break; /xWkP{
SortUtil.swap(queue,j,k); ?sfA/9"
k = j; C7[_#1Oz
} x;?4A J{
} =\eM
-"r
j*Ta?'*
} ;^^u _SuH
pej/9{*xg(
} F<M#T
@TdPeTw\
SortUtil: !;x
U@@#f;&
package org.rut.util.algorithm; <!v^Df
H 0aDWFWS
import org.rut.util.algorithm.support.BubbleSort; $6Lgaz
import org.rut.util.algorithm.support.HeapSort; rp6Y&3p.
import org.rut.util.algorithm.support.ImprovedMergeSort; S#8wnHq
import org.rut.util.algorithm.support.ImprovedQuickSort; Ou"QUn|
import org.rut.util.algorithm.support.InsertSort; >k,bHGj?
import org.rut.util.algorithm.support.MergeSort; d+[yW7%J
import org.rut.util.algorithm.support.QuickSort; (`5No:?v<
import org.rut.util.algorithm.support.SelectionSort; W/<]mm~95
import org.rut.util.algorithm.support.ShellSort; FVW<F(g`
rRRiqmq
/** KJo[!|.
* @author treeroot 'ejuzE9
* @since 2006-2-2 EDcR:Dw3
* @version 1.0 4_TxFulX.
*/ d kHcG&)
public class SortUtil { zW,m3~XX:
public final static int INSERT = 1; ^o+2:G5z}
public final static int BUBBLE = 2; OmQSNU.our
public final static int SELECTION = 3; "
;_bB"q*
public final static int SHELL = 4; UTGR{>=>
public final static int QUICK = 5; s3HwBA
public final static int IMPROVED_QUICK = 6; nyWA(%N1
public final static int MERGE = 7; &?IOrHSv!
public final static int IMPROVED_MERGE = 8; rk*Igqf
public final static int HEAP = 9; bo '
i[`nu#n/
public static void sort(int[] data) { Z$ Fh4
sort(data, IMPROVED_QUICK); :WIbjI=
} C'4u+raq
private static String[] name={ .;ml[DXH
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2+M(!FHfy
}; PwU}<Hrl]
C18pK8-
private static Sort[] impl=new Sort[]{ %Qgo0
new InsertSort(), lEIX,amwa
new BubbleSort(), '}dlVf
new SelectionSort(), @a#qq`b;
new ShellSort(), I~\j%zD
new QuickSort(), ge)g ?IP4
new ImprovedQuickSort(), 8+{WH/}y8
new MergeSort(), M7^PWC
new ImprovedMergeSort(), 7Oe |:Z
new HeapSort() 3P 3x^NI
}; 4j|]=58
%Js3Y9AL C
public static String toString(int algorithm){ M >P-0IC
return name[algorithm-1]; W -<E p<7{
} )28Jz6.I
`Jhu&MWg
public static void sort(int[] data, int algorithm) { .\M@oF
impl[algorithm-1].sort(data); A\ds0dUE
} ]IMBRZQqb
8fFURk
public static interface Sort { )[yM4QFl
public void sort(int[] data); htk5\^(X
} 9#{?*c6
&1YAPxX
public static void swap(int[] data, int i, int j) { H>AQlO+ J
int temp = data; Pwf2dm$,+
data = data[j]; P$S>=*`n
U
data[j] = temp; _?#}@?
} lfG]^id'
} V^B'T]s