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。 5bMVDw/
插入排序: ;ATk?O4T
Ij4\* D!
package org.rut.util.algorithm.support; ( XE`,#
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import org.rut.util.algorithm.SortUtil; tCA |sN
/** {_Ke'"
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* @author treeroot d5bj$oH
* @since 2006-2-2 :*4yR46
* @version 1.0 /V3*[
*/ Z1q'4h=F.
public class InsertSort implements SortUtil.Sort{ *]F3pP[
3>?ip;
/* (non-Javadoc) g#Yqw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~1}NQa(
*/ vwP516EM
public void sort(int[] data) { 6
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int temp; deTUfbd'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qjTz]'^BpM
} }g(aZ
} jixU9]
} fzSZ>I0R
I ][8[UZ
} Lw-j#}&6E
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冒泡排序: /&ph-4\i
A$|> Jt
package org.rut.util.algorithm.support; Npq=jlj
]c$%;!ZE
import org.rut.util.algorithm.SortUtil; 6bfk4k
8/=[mYn`-
/** \@I.K+hj$
* @author treeroot B?TAS
* @since 2006-2-2 12cfqIo9
* @version 1.0 {feS-.Khv
*/ - FE)
public class BubbleSort implements SortUtil.Sort{ x6F\|nb
!.p!
/* (non-Javadoc) @Z.Ne:*J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iiRK3m
*/ Fbk<qQH
public void sort(int[] data) { y(N-1
int temp; BPi>SI0
for(int i=0;i for(int j=data.length-1;j>i;j--){ R2M,VK?Wx
if(data[j] SortUtil.swap(data,j,j-1); PqvwM2}4
} wX|]8f2Z
} 1eT|
} _+^3<MT
} 4N#0w]_,>Y
a>s v
} sU{+.k{
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选择排序: K$(U>D|
WgY\m&
package org.rut.util.algorithm.support; -3KB:K<
rhL<JTS
import org.rut.util.algorithm.SortUtil; nPv2: x
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/** h8S%Q|-
* @author treeroot 0<i~XN0g
* @since 2006-2-2 o AQ92~b
* @version 1.0 0.+iVOz+Y
*/ /=Xen
mmS
public class SelectionSort implements SortUtil.Sort { +mxs jcq0
6W#+U<
/* cYGZZC8 |K
* (non-Javadoc) +>I4@1qC-|
* rJNf&x%6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y!Z@1V`
*/ |y=CmNG,
public void sort(int[] data) { TF3Tha]
int temp; OFUN hbg
for (int i = 0; i < data.length; i++) { dQizM^j
int lowIndex = i; fM2[wh@
for (int j = data.length - 1; j > i; j--) { bfa5X<8
if (data[j] < data[lowIndex]) { ZJw92Sb
lowIndex = j; \,(t P:o
} E}a3. 6)p
} 4.VEE~sH$
SortUtil.swap(data,i,lowIndex); a(}jn|
} 8q0f#/`v
} FtF!Dtv
=z@'vu$Fh
} ^5GS!u"
t_j.@|/FZ
Shell排序: ;$0za]x
DR =>la}!
package org.rut.util.algorithm.support; 89 SsS b
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import org.rut.util.algorithm.SortUtil; h[B
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/** WG^D$L:
* @author treeroot )3u[btm
* @since 2006-2-2 zV2c`he%z
* @version 1.0 ,U<Ku*}B
*/ 3a#!^G!~
public class ShellSort implements SortUtil.Sort{ Rl S=^}>
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/* (non-Javadoc) i.fDH57
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) se)I2T{J
*/ 4&&j7$aV
public void sort(int[] data) { EIF[e|kZ<
for(int i=data.length/2;i>2;i/=2){ oxad}Y
for(int j=0;j insertSort(data,j,i); t zV"|s=o
} JG4&eK$-
} $~`(!pa:
insertSort(data,0,1); )p!dqlK
} esLY1c%"/
#}jf TM
/** xK_$^c.
* @param data ^Jkj/n'
* @param j -D
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* @param i 3^`bf=R
*/ Ezml LFp.
private void insertSort(int[] data, int start, int inc) { Ni0lj:
int temp; Riw>cVi~
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1hMk\ -3S
} I#A`fJ
} *tP,Ol
} JLG5`{
n*;mFV0s
} r+Z+x{
95(VY)_6#A
快速排序: S)[2\Z{**T
Xt~/8)&
package org.rut.util.algorithm.support; S[ 2`7'XV
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import org.rut.util.algorithm.SortUtil; W``e6RX-
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/** $iF7hyZ
* @author treeroot 9r)5d&,6
* @since 2006-2-2 rAQ^:q
* @version 1.0 ''WX
*/ (
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public class QuickSort implements SortUtil.Sort{ oYqC"g&4Z
"\V:W%23W{
/* (non-Javadoc) `[ne<F?e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [S9n F
*/ wicg8[T=B
public void sort(int[] data) { @B[=`9KF[
quickSort(data,0,data.length-1); @yek6E&9
} pYa<u,>pN
private void quickSort(int[] data,int i,int j){ :Z+(H +lyZ
int pivotIndex=(i+j)/2; 6!gGWn5>}
file://swap >! c^
SortUtil.swap(data,pivotIndex,j); |0Zj/1<$
+~[19'GH
int k=partition(data,i-1,j,data[j]); <4>6k7W
SortUtil.swap(data,k,j); L' )(Zn1
if((k-i)>1) quickSort(data,i,k-1); <LLSUk/
if((j-k)>1) quickSort(data,k+1,j); }u|0
fmSA.z
} \tQi7yj4
/** .}0Cg2W
* @param data @D7cv"
* @param i y24 0 +;a
* @param j +)F8YMg
e
* @return w}2yi#E[
*/ ^^%*2^
private int partition(int[] data, int l, int r,int pivot) { 7"S|GEs:
do{ kPxrI=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g xLA1]>{
SortUtil.swap(data,l,r); Z> &PM06
} QVFa<>8/md
while(l SortUtil.swap(data,l,r); p~e6ah?1
return l; Z2LG/R
} 8.A ;
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\K)q$E<!
} v/m6(z
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改进后的快速排序: nH_A`m3%/
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package org.rut.util.algorithm.support; mqE&phF,
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import org.rut.util.algorithm.SortUtil; iE&`Fhf?
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/** D #A9
* @author treeroot T8RQM1D_s
* @since 2006-2-2 8m6L\Z&
* @version 1.0 K1C#
*/ CBF>157B
public class ImprovedQuickSort implements SortUtil.Sort { >o[T#U
#ob">R
private static int MAX_STACK_SIZE=4096; hxtu^E/
private static int THRESHOLD=10; >M +!i+
/* (non-Javadoc) (*M(gM{;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8,H
*/
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public void sort(int[] data) { $AX!L+<!
int[] stack=new int[MAX_STACK_SIZE]; u4Xrvfb,
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int top=-1; 1f~DUku=
int pivot; 2R1W[,Ga!
int pivotIndex,l,r; N,;Bl&EU
@ojn<7W
stack[++top]=0; lw Kr$X4
stack[++top]=data.length-1; G.BqT\ o'
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while(top>0){ t;?
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int j=stack[top--]; 3XA^{&}
int i=stack[top--]; TQ>1u
yX)2
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pivotIndex=(i+j)/2; '8W }|aF
pivot=data[pivotIndex]; LS \4y&J40
;=E3f^'s
SortUtil.swap(data,pivotIndex,j); 'DKP-R"
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file://partition S[%86(,*gP
l=i-1; ~+|p.(I
r=j; ,iHl;3bu
do{ MbJV)*Q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /]vg_&)=
SortUtil.swap(data,l,r); 19lx;^b
} Dui<$jl0b
while(l SortUtil.swap(data,l,r); }t-{,0
SortUtil.swap(data,l,j); )v'DQAL
#kxg|G[Ol
if((l-i)>THRESHOLD){ u'iOa
stack[++top]=i; /njN*rhx&Z
stack[++top]=l-1; ap=_odW~p
} rfK%%-
if((j-l)>THRESHOLD){ ~Ipl'cE
stack[++top]=l+1; :,cSEST
stack[++top]=j; `4$" mO>+
} e0aeiG$/0
'|6j1i0x
} Yr0%ZYfN
file://new InsertSort().sort(data); Qn6&M
insertSort(data); _w'4f )7
} Ye,E7A*L
/** PDtaL
* @param data <Z}2A8mjY
*/ @90)
private void insertSort(int[] data) { O1-Ne.$
int temp; sKNN ahGjh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /y1,w JI
} 4s3n|6 v
} VdYu| w;v
} I|08[
mO
yA6"8fr
} rH & ^SNc
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归并排序: S=o Ab&
(B[0BjU
package org.rut.util.algorithm.support; i8EMjLBUR
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R%.
import org.rut.util.algorithm.SortUtil; aP2
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/** !K3
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* @author treeroot +A/n<VH
* @since 2006-2-2 2#p6.4h=
* @version 1.0 L0Xb^vx}m
*/ ]G&d`DNV
public class MergeSort implements SortUtil.Sort{ Vo%@bj~>
<w8*Ly:L
/* (non-Javadoc) 6 Rg{^E Rf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qd(`~a
*/ <r_ldkZ
public void sort(int[] data) { ,US]
int[] temp=new int[data.length]; 0f1*#8-6
mergeSort(data,temp,0,data.length-1); XlR.Y~
} BQ &|=a6
!,|yrB&`S
private void mergeSort(int[] data,int[] temp,int l,int r){ Bg Uf:PT
int mid=(l+r)/2; L`3 g5)V
if(l==r) return ; Fvl_5 l
mergeSort(data,temp,l,mid); h=?#D0
mergeSort(data,temp,mid+1,r); eSJ5YeY)
for(int i=l;i<=r;i++){ {&G0jsA
temp=data; l2._Z
Py
} mD=x3d
int i1=l; UoBmS5
int i2=mid+1; *7`;{O
for(int cur=l;cur<=r;cur++){ iVwI}%k
if(i1==mid+1)
_6xC4@~h*
data[cur]=temp[i2++]; abx/h#_q
else if(i2>r) %Q]m6ciAM
data[cur]=temp[i1++]; 3)p#}_u{
else if(temp[i1] data[cur]=temp[i1++]; RCgZ GP
else {rf.sN~M
data[cur]=temp[i2++]; vm
1vX;
} "0pu_
} IL*C/y
SfEgmp-m
} %h(J+_"L6
#]cO]
I
改进后的归并排序: )jm}h7,
hvwKhQ}wX
package org.rut.util.algorithm.support; (TgLCT[@T
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import org.rut.util.algorithm.SortUtil; :$L^l{gT
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/** <$qe2FtUq
* @author treeroot A )tGB&
* @since 2006-2-2 1 cvoI
* @version 1.0 J7c(qGJI2
*/ .T#h5[S2x
public class ImprovedMergeSort implements SortUtil.Sort { 9jBP|I{xI
0X!A'
private static final int THRESHOLD = 10; |eU{cK~e^
au1uFu-
/* *@^9]$*$
* (non-Javadoc) L9W'TvTwo
* 4|ML#aRz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _H}8eU
*/ PuYAoKG
public void sort(int[] data) { $~W=)f9
int[] temp=new int[data.length]; WzDL(~m+Z
mergeSort(data,temp,0,data.length-1); =c8xg/
} A]c'`Nf
DI"KH)XD
private void mergeSort(int[] data, int[] temp, int l, int r) { .hPk}B/KV
int i, j, k; ^T2o9f
int mid = (l + r) / 2; ]
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if (l == r) avxr|uk
return; FN0)DN2d}
if ((mid - l) >= THRESHOLD)
td@I ;d2
mergeSort(data, temp, l, mid); 3k3-Ts
else /Ps/m!
insertSort(data, l, mid - l + 1); 8A'oK8Q
if ((r - mid) > THRESHOLD) QMwrt
mergeSort(data, temp, mid + 1, r); 3)cH\gsg9
else AAuH}W>n
insertSort(data, mid + 1, r - mid); w#0/&\b=
~}Xd{afo
for (i = l; i <= mid; i++) { !Pd@0n4
temp = data; "{>BP$Jz
} n-P<y
for (j = 1; j <= r - mid; j++) { (qo
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temp[r - j + 1] = data[j + mid]; ,yf2kU
} s3<gq x-&r
int a = temp[l]; qca,a3k
int b = temp[r]; B6UTooj
for (i = l, j = r, k = l; k <= r; k++) { `X)y5*##wq
if (a < b) { Lp31Y .4
data[k] = temp[i++]; )seeBm-`
a = temp; Wz{,N07Q#{
} else { ^1`Mz<
data[k] = temp[j--]; %j $r"
b = temp[j]; ^`iqa-1
} ^jhc(ZW"
} GW{e"b/x
} &;3iHY;
g A+p^`;[
/** Y.yiUf/Q
* @param data AdU0 sZ+&c
* @param l _"l2UDx
* @param i f^Io:V\
*/ t9l]ie{"o.
private void insertSort(int[] data, int start, int len) { $Iz *W]B!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); T"IDCT'z
} !1m7^3l7j
} h8XoF1wuw
} {3Y
R_^>?
} = q\TWz
yjE$o?A
堆排序: emT/5'y
\gCh'3
package org.rut.util.algorithm.support; {HO,d{{
&s^t~>Gpr
import org.rut.util.algorithm.SortUtil; \RT3#X+
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/** ZX0#I W
* @author treeroot 0q6xXNAX
* @since 2006-2-2 CXiDe)|<E
* @version 1.0 V*6o |#
*/ h[ cqa
public class HeapSort implements SortUtil.Sort{ tn38T%
u7nTk'#r
/* (non-Javadoc) W*;r}!ro
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Szn,
*/ S\M+*:7
public void sort(int[] data) { KOhK#t>H@0
MaxHeap h=new MaxHeap(); awB+B8^s
h.init(data); U%rEW[ j
for(int i=0;i h.remove(); A<}nXHs-
System.arraycopy(h.queue,1,data,0,data.length); YQ|o0>
} R :*1Y\o(
l6T^e@*
private static class MaxHeap{ y0]"qB
\ gO!6
void init(int[] data){ O>y*u 8
this.queue=new int[data.length+1]; 2`^M OGYk
for(int i=0;i queue[++size]=data;
MFyi#nq
fixUp(size); U6?3 z
} fnJx$PD~
} .k -!/ ^
VX:Kq<XwQ
private int size=0; oM^VtH=>
>PYc57S1c
private int[] queue; l@:&0id4I
j4wsDtmAU
public int get() { PR3i}y>
return queue[1]; 6o.Dgt/f
} ntxaFVD
X=@bzL;eq
public void remove() { NOSLb];
SortUtil.swap(queue,1,size--); Hb3..o:
fixDown(1); ku)/
8Z`$
} )mH(Hx
file://fixdown )8E[xBaO
private void fixDown(int k) { Y41b8.|P+
int j; kx%\Cz
while ((j = k << 1) <= size) { o&$Of
if (j < size %26amp;%26amp; queue[j] j++; 6 \?GY
if (queue[k]>queue[j]) file://不用交换 4(? Z1S
break; cTja<*W^xv
SortUtil.swap(queue,j,k); (c
S'Nm5
k = j; p`Ok(C_
} r ?<?0j
} fQxlYD'peb
private void fixUp(int k) { Z|B`n
SzH
while (k > 1) { Gs/G_E(T
int j = k >> 1; SveP:uJA[
if (queue[j]>queue[k]) %O9P|04]3
break; gI/SA
SortUtil.swap(queue,j,k); gb=tc`
k = j; q{}U5(,{0
} !{F\\D/
} W'PW;.,
=j%ORD[
} O[8wF86R
FI @kE19
} -I:L6ft8
6?';ip
SortUtil: 8&:dzS
C:_-F3|]cJ
package org.rut.util.algorithm; MKh}2B#S
b y$S#ef
import org.rut.util.algorithm.support.BubbleSort; S;SI#Vg@
import org.rut.util.algorithm.support.HeapSort; !KtP> `8
import org.rut.util.algorithm.support.ImprovedMergeSort; ikb;,Js
import org.rut.util.algorithm.support.ImprovedQuickSort; p#N2K{E
import org.rut.util.algorithm.support.InsertSort; ~
Ofn&[G
import org.rut.util.algorithm.support.MergeSort; nTE\EZ+=2
import org.rut.util.algorithm.support.QuickSort; WM0-F@_
import org.rut.util.algorithm.support.SelectionSort; D1V^DbUm_
import org.rut.util.algorithm.support.ShellSort; ;ykX]5jGh
bSW~hyI w
/** 8w ]'U
* @author treeroot 2]5ux!Lqln
* @since 2006-2-2 |ADg#oX
* @version 1.0 U9XOs)^
*/ 0pBG^I`_
public class SortUtil { CN6b982&
public final static int INSERT = 1; _4LDzVjNRe
public final static int BUBBLE = 2; ?]\v%[ho
public final static int SELECTION = 3; ybcCq]cgt
public final static int SHELL = 4; +FC+nE}O
public final static int QUICK = 5; #.2} t0*]5
public final static int IMPROVED_QUICK = 6; 8"ulAx74>
public final static int MERGE = 7; M
y!;N1
public final static int IMPROVED_MERGE = 8; ;vUw_M{P=)
public final static int HEAP = 9; +vYVx<uTQ
au+a7~0~
public static void sort(int[] data) { lT8^BT
sort(data, IMPROVED_QUICK); nu X`>Oy
} *>T@3G.{Rm
private static String[] name={ zC rM~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JD~]aoH
}; KkSv23In
d&X
<&)a7
private static Sort[] impl=new Sort[]{ A<-3u
new InsertSort(),
A/OGF>
new BubbleSort(), #Wt1Ph_;
new SelectionSort(), lrmz'M'
new ShellSort(), v{) *P.E
new QuickSort(), <%"CQT6g%
new ImprovedQuickSort(), 8*sP
new MergeSort(), U3p Mv|b
new ImprovedMergeSort(), rs@qC>_C0
new HeapSort() `jT1R!$3F
}; s-S|#5
5r^u7k
public static String toString(int algorithm){ 7Pr5`#x#
return name[algorithm-1]; `<?((l%;R
} F D.L{
4Z/]7Ie
public static void sort(int[] data, int algorithm) { |Gt]V`4
impl[algorithm-1].sort(data); 30QQnMH3
} xKXD`-|W
6~Y`<#X5J
public static interface Sort { 0T:ZWRjH
public void sort(int[] data); vl5r~F
} mam(h{f$
`IK3e9QpcA
public static void swap(int[] data, int i, int j) { $B@K
int temp = data; }#E~XlX^
data = data[j]; h|.*V$3
data[j] = temp; L)_L#]Yy
} sX]ru^F3
} C6c]M@6