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。 ~q 0)+'
插入排序: qM~ev E$%
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package org.rut.util.algorithm.support; /pt%*;H
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import org.rut.util.algorithm.SortUtil; 8%nb1CA
/** .^6"nnfA#
* @author treeroot 2;VggPpT
* @since 2006-2-2 W2e~!:w
* @version 1.0 SQ9s
*/ +1zCb=;!{
public class InsertSort implements SortUtil.Sort{ !~u;CMR
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/* (non-Javadoc) Iww.Nd2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gNY}`'~hr
*/ (p08jR
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public void sort(int[] data) { id="\12Bw
int temp; u=JI 1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RcIGIt
} FIG3P))
} s-!Bpr16o0
} Av:5v3%
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} =\GuIH2
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冒泡排序: [4KW64%l
0wU8PZ Nj
package org.rut.util.algorithm.support; tt2`N3Eu\
{ K'QE0'x
import org.rut.util.algorithm.SortUtil; "E =\Vz
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/** 'yu M=Pb
* @author treeroot n>T1KC%
* @since 2006-2-2 484lB}H
* @version 1.0 mojD
*/ ~( 54-9&
public class BubbleSort implements SortUtil.Sort{ J*?BwmD'8
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/* (non-Javadoc) # Y/.%ch.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FTZ][
*/ &rj3UF@hb
public void sort(int[] data) { }YH@T]O}
int temp; l=G=J( G
for(int i=0;i for(int j=data.length-1;j>i;j--){ !_P;4E
if(data[j] SortUtil.swap(data,j,j-1); ?9hw]Q6r}
} 1:%HE*r
} uKHkC.g
} GP6-5Y"8
} E~Eh'>Y(B
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} -h+=^,
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选择排序: eJFGgJRIvF
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package org.rut.util.algorithm.support; Ta^l1]9.*
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import org.rut.util.algorithm.SortUtil; N%
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/** `oQ)qa_
* @author treeroot V~ph1Boz2
* @since 2006-2-2 @| kBc.(]
* @version 1.0 $Ay
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*/ \lwYDPY:
public class SelectionSort implements SortUtil.Sort { x-O9|%aRJ
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/* `\LhEnIwu
* (non-Javadoc) ov>Rvy
* wN1%;~?7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gRA}sF
*/ 72@lDY4cE
public void sort(int[] data) { c#X9d8>
int temp; !pY=\vK;
for (int i = 0; i < data.length; i++) { cz<8Kb/XV
int lowIndex = i; foY=?mbL
for (int j = data.length - 1; j > i; j--) { c^0YuBps[
if (data[j] < data[lowIndex]) { kNqSBzg
lowIndex = j; {?tK]g#
} mNS7/I\
} U%oh?g
SortUtil.swap(data,i,lowIndex); l1BbL5#1Q>
} .1R:YNx{/
} P9h]Bu
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} 1d)wE4c=Z
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Shell排序: ? ->:,I=<~
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package org.rut.util.algorithm.support; Khd"
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import org.rut.util.algorithm.SortUtil; Qx{k_ye`
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/** v,z s
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* @author treeroot 0IU>KGJ-0s
* @since 2006-2-2 :.KN;+tP
* @version 1.0 *h6Lh]7
*/ QH%Zbt2qS
public class ShellSort implements SortUtil.Sort{ F&?55@b
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/* (non-Javadoc) `tZu~
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) za{z2#aJ
*/ YNV!(>\GE
public void sort(int[] data) { py#`
for(int i=data.length/2;i>2;i/=2){ nd)Z0%xo
for(int j=0;j insertSort(data,j,i); P&PPX#%
} ]C.x8(2!f
} V/w:^@5+p
insertSort(data,0,1); Exir?G} \
} Cw`8[)=}o
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/** ~P&Brn"=Rs
* @param data D5]4(]k&
* @param j c 32IO&W4
* @param i &6!~Q,;K-
*/ z.fh4p
private void insertSort(int[] data, int start, int inc) { |X&.+RI
int temp; eeIaH
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 27mGX\T
} !O=?n<Ex"
} |<nS<x
} ;{1J{-EA
jtqH3xfy
} `m2e
*
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快速排序: !]c]:ed\C
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package org.rut.util.algorithm.support; \~V
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import org.rut.util.algorithm.SortUtil; @oC# k<
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/** {v&c5B~,\
* @author treeroot ~F5JN^5Y
* @since 2006-2-2 [NQ\(VQ1c
* @version 1.0 %7tQam
*/ [$; \1P/
public class QuickSort implements SortUtil.Sort{ (_&W@:"z
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/* (non-Javadoc) VayU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /18Z4TA
*/ R#j-Z#/"
public void sort(int[] data) { aoNTRJc$
quickSort(data,0,data.length-1); I5RV:e5b
} 9o-fI@9
private void quickSort(int[] data,int i,int j){ !'uLV#YEZ
int pivotIndex=(i+j)/2; >r Nff!Ow
file://swap ^X2U
A{
SortUtil.swap(data,pivotIndex,j); ?f1PQ
*69yB
int k=partition(data,i-1,j,data[j]); P'o:Vhm_H
SortUtil.swap(data,k,j); C;m 7~R
if((k-i)>1) quickSort(data,i,k-1); mKWfRx*UdG
if((j-k)>1) quickSort(data,k+1,j); U?/UW;k[
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} -[-LR }u
/** vIBVp
* @param data rEI]{?eoF
* @param i YG2rJY+*
* @param j NOOP_:( 7H
* @return .Z=4,m>
*/ =[Lo9Sg
private int partition(int[] data, int l, int r,int pivot) { jO'+r'2B9
do{ .<`W2*1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )c9]}:W&
SortUtil.swap(data,l,r); 5`:+NwXS2
} F8 *e
while(l SortUtil.swap(data,l,r); J&,N1B
return l; i!zh9,i>M
} z4l
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} wg6![Uh
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改进后的快速排序: urGk_.f
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package org.rut.util.algorithm.support; 2u9^ )6/
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import org.rut.util.algorithm.SortUtil; !\{&^,y
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/** $YDZtS&h
* @author treeroot 7 mulNq
* @since 2006-2-2 S@suPkQ<>
* @version 1.0 S312h'K
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*/ :SxOQ(n
public class ImprovedQuickSort implements SortUtil.Sort { a/@<KnT
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private static int MAX_STACK_SIZE=4096; c"ukV_6~J
private static int THRESHOLD=10; 75Xi%mlE7
/* (non-Javadoc) jF}zv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )"7hyW 5
*/ Ph&AP*Fq
public void sort(int[] data) { 3[Pa~]yS
int[] stack=new int[MAX_STACK_SIZE]; \ iL&Aq}BO
Qy ;
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int top=-1; @_0g "Ul
int pivot; uM0!,~&9|
int pivotIndex,l,r; \jn[kQ+pJ
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stack[++top]=0; %gd=d0vm
stack[++top]=data.length-1; 5,:tjn
!O$ */7
while(top>0){ 7I;Give{
int j=stack[top--]; 66\0JsT?3
int i=stack[top--]; #8;|_RU
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pivotIndex=(i+j)/2; s{q)m@
pivot=data[pivotIndex]; Z<a6U 3
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SortUtil.swap(data,pivotIndex,j); A.9,p
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file://partition &]~z-0`$!
l=i-1; @+",f]
r=j; ,x5`5mT3
do{ `Rj<qz^7
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1E Lzzn
SortUtil.swap(data,l,r); RMB?H)p+
} 9GS<d.#Nvc
while(l SortUtil.swap(data,l,r); Xu#\CYk
SortUtil.swap(data,l,j); gF%lwq
8F0+\40
if((l-i)>THRESHOLD){ fk!wq.a
stack[++top]=i; 1Giy|;2/
stack[++top]=l-1; L K9vvQz
} 52B
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if((j-l)>THRESHOLD){ *[*#cMZ
stack[++top]=l+1; AqVTHyCu
stack[++top]=j; [|UW_Bz
} J'.:l} g!1
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} W|=?-
file://new InsertSort().sort(data); Tgp}k%R~
insertSort(data); R!xs;|]
} )!MeSWGq
/** L@?Dmn'v
* @param data lj.z>
*/ 84P^7[YX>
private void insertSort(int[] data) { h$ M+Yo+
int temp; "}DuAs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JGIN<J85e
} Oa~t&s
} KdFQlQaj
} gcr,?rE<
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} sS OI5W3A
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归并排序: 9>psQ0IRvr
9QJ=?bIC#
package org.rut.util.algorithm.support; b@N|sXt&C
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import org.rut.util.algorithm.SortUtil; mLD0Lu_Ob3
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/** :c,\8n
* @author treeroot Z~g~,q
* @since 2006-2-2 n6WSTh
* @version 1.0 HKP\`KBCj
*/ pRXA!QfO
public class MergeSort implements SortUtil.Sort{ j._9;HifZ
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/* (non-Javadoc) GZQ)TzR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r4NI(\gU
*/ u7@|fND 7
public void sort(int[] data) { %'`Dd
int[] temp=new int[data.length]; 'jcDfv(v<
mergeSort(data,temp,0,data.length-1); iAf, :g
} ezlp~z"_k
U*/
private void mergeSort(int[] data,int[] temp,int l,int r){ t=S94^g
int mid=(l+r)/2; <PW*vo9v
if(l==r) return ; FqsG#6|x
mergeSort(data,temp,l,mid); ]*}*zXN/E
mergeSort(data,temp,mid+1,r); X=(8t2
for(int i=l;i<=r;i++){ e }/c`7M
temp=data; UuT>qWxQ8
} DcoTa-~
int i1=l; 3Q[]lFJ}F
int i2=mid+1; M O* m@
for(int cur=l;cur<=r;cur++){ s;}';#
if(i1==mid+1) Mim 9C]h(
data[cur]=temp[i2++]; 9{ i6g+
else if(i2>r) mMrvr9%
data[cur]=temp[i1++]; 'm}~
else if(temp[i1] data[cur]=temp[i1++]; ]G&?e9OA
else jb)z[!FbM
data[cur]=temp[i2++]; P>L-,R(7e
} 7r"!&P*,
} 9|jIrS%/~
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} EPI mh
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改进后的归并排序: 4,FkA_k
;^}cZ
package org.rut.util.algorithm.support; lZ^XZjwoM
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import org.rut.util.algorithm.SortUtil; [$.oyjd
H|F>BjXn5
/** \R&`bAd k
* @author treeroot 8<)[+@$0
* @since 2006-2-2 k4pvp5}%
* @version 1.0 +ls *04
*/ HJBUN1n
public class ImprovedMergeSort implements SortUtil.Sort { }K"=sE
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private static final int THRESHOLD = 10; dSIMwu6u
kp<9o!?)
/* (U!WD`Ym
* (non-Javadoc) E_WiQ?p
* Dr(.|)hv[&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I"sKlMD
*/ )^%,\l-!
public void sort(int[] data) { ]t0?,q.$7
int[] temp=new int[data.length]; N
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mergeSort(data,temp,0,data.length-1); g IX"W;
} sdS<-!
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E'[pNU*"x-
private void mergeSort(int[] data, int[] temp, int l, int r) { 28X)s!W'
int i, j, k; }}grJh>tGg
int mid = (l + r) / 2; f(D?g
if (l == r) "793R^Tz
return; 9AB~*;U
if ((mid - l) >= THRESHOLD) SL%4w<
mergeSort(data, temp, l, mid); i-sE\m
else xZ`t~4qR
insertSort(data, l, mid - l + 1); zd#qBj]g
if ((r - mid) > THRESHOLD) 3p!R4f)GN
mergeSort(data, temp, mid + 1, r); _3A$zA
else J[LGa:``
insertSort(data, mid + 1, r - mid); axU!o /m>
aeSy,:
for (i = l; i <= mid; i++) { p4{?Rhb6
temp = data; Z`b,0[rG[
} (jY.S|%
for (j = 1; j <= r - mid; j++) { + 6r@HK`,t
temp[r - j + 1] = data[j + mid]; n{4&('NRFP
} P[XE5puC
int a = temp[l]; tm+}@CM^.
int b = temp[r]; !nuXK
for (i = l, j = r, k = l; k <= r; k++) { %l:%c
if (a < b) { v~ uwQ&AH
data[k] = temp[i++]; JEJ]'3
a = temp; !S(jT?'w
} else { j?w7X?1(
data[k] = temp[j--]; D
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b = temp[j]; |r0j>F
} /^/'9}7
} u#J5M
} *WMcE$w/D
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/** 0pkU1t~9
* @param data Mqw&%dz'_
* @param l \8Blq5n-O*
* @param i 9=3V}]^M
*/ "]MF =-v
private void insertSort(int[] data, int start, int len) { ;=h^"et
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); HLk}E*.mC
} & rw|fF|]
} _Seiwk&
} P7u5Ykc*
} <PV @JJ"
3%<ia$
堆排序: BvX!n"QIb
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package org.rut.util.algorithm.support; zT_{M
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import org.rut.util.algorithm.SortUtil; 'Iu$4xo`[
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/** cE]tvL:g
* @author treeroot #exE~@fy-
* @since 2006-2-2 {_(;&\5
* @version 1.0 MIt\[EB
*/ NRoi`
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public class HeapSort implements SortUtil.Sort{ {'d?vm!r
deeOtco$LT
/* (non-Javadoc) EO'3;mo,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xZ,g6s2o
*/ A|y&\~<A
public void sort(int[] data) { TC R(
MaxHeap h=new MaxHeap(); H.i_,ZF
h.init(data); ?FMHK\
for(int i=0;i h.remove(); KY|Q#i|pM
System.arraycopy(h.queue,1,data,0,data.length); [xI@)5Xk
} Y/@4|9!
||L qx#e=
private static class MaxHeap{ y\x!Be;6Z.
$fnFi|-
void init(int[] data){ R
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this.queue=new int[data.length+1]; BT#'<!7!
for(int i=0;i queue[++size]=data; xTAC&OCk^[
fixUp(size); y'4=
} ! *pK#
} o"UqI
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private int size=0; S4?ssI
ND21;
private int[] queue; w
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public int get() { vV=$N"bT~
return queue[1]; SrHRpxy
} 7Bmt^J5i&t
C'5i>;
public void remove() { :Z=A,G
SortUtil.swap(queue,1,size--); EzG7RjW
fixDown(1); #~p1\['|M
} `+*
M r
file://fixdown vn,L),"=
private void fixDown(int k) { TSuHY0.cp
int j; 'iL['4~.
while ((j = k << 1) <= size) { l|N1u=Z
if (j < size %26amp;%26amp; queue[j] j++; MR+ndB<
if (queue[k]>queue[j]) file://不用交换 })"9TfC
break; }B0V$
SortUtil.swap(queue,j,k); vQIoj31
k = j; *5|\if\
} #Va@4<4r
} mH}AVje{
`
private void fixUp(int k) { @+xkd(RfN
while (k > 1) { WVwNjQ2PM
int j = k >> 1; 0c:CA>F
if (queue[j]>queue[k]) -?e~S\JH
break; roRZE[ya
SortUtil.swap(queue,j,k); }A2@1TTPX
k = j; g7d) YUc
} $> #PhOC
} ^QFjBQ-Hai
t3bDi/m
} YQYN.\
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} ~yO.R)4v
V?5_J%
SortUtil: //6m2a
y4envjl0
package org.rut.util.algorithm; ~'T]B{.+J
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import org.rut.util.algorithm.support.BubbleSort; `9$?g|rB
import org.rut.util.algorithm.support.HeapSort; K<|eZhp~
import org.rut.util.algorithm.support.ImprovedMergeSort; n|^-qy'w
import org.rut.util.algorithm.support.ImprovedQuickSort; YR[Ii?
import org.rut.util.algorithm.support.InsertSort; i-&kUG_X
import org.rut.util.algorithm.support.MergeSort; Ui1K66{
import org.rut.util.algorithm.support.QuickSort; -{P)\5.L
import org.rut.util.algorithm.support.SelectionSort; _G'.VSGH
import org.rut.util.algorithm.support.ShellSort; gk]r:p<