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。 E
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插入排序: .Pb-{!$Ni
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package org.rut.util.algorithm.support; 1(
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import org.rut.util.algorithm.SortUtil; lW+mH=
/** -(qRC0V
* @author treeroot NRi5 Vp2=
* @since 2006-2-2 c-a,__c?hx
* @version 1.0 CXa[%{[n
*/ eb62(:=N6
public class InsertSort implements SortUtil.Sort{ ?=VvFfv%
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/* (non-Javadoc) A,}M ^$@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o).deP
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*/ B5b:znW2@
public void sort(int[] data) { #b/qR^2qW
int temp; '7Gv_G_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h051Ol\v*
} w;z7vN~/O
} |#oS7oV(
} /*K2i5&X
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} =Zd(<&B K
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冒泡排序: _BczR:D*
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package org.rut.util.algorithm.support; MdHm%Vx
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import org.rut.util.algorithm.SortUtil; Harg<l
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/** t]/eCsR
* @author treeroot Nk|cU;?+
* @since 2006-2-2 j(;^XO Y#
* @version 1.0 O$Rz/&
*/ d9N[f>
public class BubbleSort implements SortUtil.Sort{ ,eXtY}E
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/* (non-Javadoc) GG}%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8y;Rw#Dz
*/ __=H"UhWv
public void sort(int[] data) { 79\wjR!T
int temp; _P>YG<*"kQ
for(int i=0;i for(int j=data.length-1;j>i;j--){ o[|[xuTm
if(data[j] SortUtil.swap(data,j,j-1); 8bIP"!=*W
} ]lB zp D
} 5xQ-f
} Cf{F"o
} $ghZ<Y2}9
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} dmFn0J-\
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选择排序: T]#V
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package org.rut.util.algorithm.support; ll:UIxx
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import org.rut.util.algorithm.SortUtil; h^M_yz-f
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/** $.G 7Vt
* @author treeroot Dl,QCZeM
* @since 2006-2-2 S,Y|;p<+^
* @version 1.0 c}(WniR-"
*/ *@U{[J
public class SelectionSort implements SortUtil.Sort { hHs/Qtq
#6`5-5Ks;
/* P3M$&::D-
* (non-Javadoc) 6{Wo5O{!\
* f:c'j`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aSL`yuXu
*/ u-_r2U
public void sort(int[] data) { Hbm 4oYN
int temp; _;lw,;ftA
for (int i = 0; i < data.length; i++) { tFN >]`Z
int lowIndex = i; @MW@mP)#
for (int j = data.length - 1; j > i; j--) { +-9vrEB
if (data[j] < data[lowIndex]) { g=*jKSZ
lowIndex = j; P 7x;G5'.
} 3h:j.8Z
} @"@a70WHk
SortUtil.swap(data,i,lowIndex); .3!Wr*o
} IqOg{#sm
} ]WT@&F
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} la!]Y-s)'4
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Shell排序: sI ,!+
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package org.rut.util.algorithm.support; Jt~Ivn,
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import org.rut.util.algorithm.SortUtil; &2'-v@kK
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/**
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* @author treeroot uuzV,q
* @since 2006-2-2 .*O*@)}Ud
* @version 1.0 L/3A g*
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*/ B#sCB&(
public class ShellSort implements SortUtil.Sort{ )6|L]'dsZ
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/* (non-Javadoc) "oP^2|${
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;OYPGvkw
*/ !avol/*
public void sort(int[] data) { +WX/4_STV
for(int i=data.length/2;i>2;i/=2){ }gp@0ri%5
for(int j=0;j insertSort(data,j,i); mHD_cgKN
} WT
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} R@e'=z[%1
insertSort(data,0,1); 8K%N7RL|
} /:dLqyQ_V
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/** m</m9h8
* @param data b@CB +8$
* @param j n1[c\1
* @param i t,/ G
*/ )"?4d[ 5
private void insertSort(int[] data, int start, int inc) {
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int temp; uF ?[H -y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K)Y& I
} [W[{
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} bS_#3T
} ~.a"jYb7A}
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} Sp`l>BL
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快速排序: ycA<l"
PKm|?kn{0(
package org.rut.util.algorithm.support; $l.*;h *
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import org.rut.util.algorithm.SortUtil; i~B?p[
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/** r(,U{bU<
* @author treeroot HC`0Ni1
* @since 2006-2-2 sXLW';Fz
* @version 1.0 >.:+|Br`
*/ :X2_#qW#C
public class QuickSort implements SortUtil.Sort{
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/* (non-Javadoc) So%X(,
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fN vQ.;
*/ )u?f| D
public void sort(int[] data) { 8R~<$xz
quickSort(data,0,data.length-1); l;8t%JV5
} U,GSWMI/K
private void quickSort(int[] data,int i,int j){ VRo&1:
int pivotIndex=(i+j)/2;
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file://swap bG;fwgAr
SortUtil.swap(data,pivotIndex,j); -t-f&`S||
6 2xOh\(
int k=partition(data,i-1,j,data[j]); `sjY#Ua<
SortUtil.swap(data,k,j); I8#2+$Be+@
if((k-i)>1) quickSort(data,i,k-1); e=amh
if((j-k)>1) quickSort(data,k+1,j); t}t(fJHY`
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} UmKE]1Yw4r
/** SmXJQ@jN
* @param data 7?lz$.*Avp
* @param i U~G7~L &m
* @param j "8za'@D"f
* @return q(sTKT[V
*/ `kKssU<
private int partition(int[] data, int l, int r,int pivot) { q<RjAi
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RB>=#03
SortUtil.swap(data,l,r); !Vpi1N\
} )k<cd.MX
while(l SortUtil.swap(data,l,r); U1`5P!ov
return l; J"gMm@#C4
} ~E}kwF
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} Sv =YI
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改进后的快速排序: $q!A1Fgk0
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package org.rut.util.algorithm.support; ?<Qbp;WBo
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import org.rut.util.algorithm.SortUtil; .G/Rh92
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/** z']6C9m}
* @author treeroot +.cpZqWn3
* @since 2006-2-2 }n)0}U5;0
* @version 1.0 fy+5i^{=
*/ /*C!]Z>.
public class ImprovedQuickSort implements SortUtil.Sort { \p!UY3'
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private static int MAX_STACK_SIZE=4096; #.8v[TkKq
private static int THRESHOLD=10; )x-b+SC
/* (non-Javadoc) s,R:D).
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T CT8OU|
*/ =By@%ioIGG
public void sort(int[] data) { jUT`V
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int[] stack=new int[MAX_STACK_SIZE]; *%uz LW0
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int top=-1; ?mMM{{%(.
int pivot; _\AQJ?<M
int pivotIndex,l,r; *QK)
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stack[++top]=0; 5(~Lr3v0
stack[++top]=data.length-1; kBP?_ O
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while(top>0){ iXWzIb}CJ-
int j=stack[top--]; Om.%K>V
int i=stack[top--]; /gAT@Vx
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pivotIndex=(i+j)/2; 0E\#!L
pivot=data[pivotIndex]; 7_~sa{1R.
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SortUtil.swap(data,pivotIndex,j); Mi]^wCF
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file://partition K6{wM
l=i-1; #1dVp!?3T
r=j; tSy 9v
do{ |JkfAnrN$I
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9hr7+fW]t
SortUtil.swap(data,l,r); *eg0^ByeD
} "DN,1Q
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while(l SortUtil.swap(data,l,r); _2KIe(,;
SortUtil.swap(data,l,j); 'Agw~
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if((l-i)>THRESHOLD){ c5p,~z_Dtu
stack[++top]=i; (]w6q&,
stack[++top]=l-1; tE%g)hL-
} W" =l@}I
if((j-l)>THRESHOLD){
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stack[++top]=l+1; Y:CX RU6eD
stack[++top]=j; l8~(bq1
} izSX
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} eEXNEgbn
file://new InsertSort().sort(data); cB&_':F
insertSort(data); -9vNV:c
} U\%r33L )
/** RUY7Y?
* @param data O=__w *<
*/ ")KqPD6k
private void insertSort(int[] data) { !-M Y<'
int temp; `BmnXWMgx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YCRE- 5!
} y`9#zYgqA
} zS:2?VXxq
} $WIE`P%
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} NL]_;\ h
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归并排序: Cl'$*h
]QlW{J
package org.rut.util.algorithm.support; *I :c@iCNJ
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import org.rut.util.algorithm.SortUtil; -sJ1q^;f@
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/** 1IoW}yT
* @author treeroot :G>w MMv&z
* @since 2006-2-2 I^EZ s6~
* @version 1.0 =r+K2]z,L
*/ x8aOXN#w}
public class MergeSort implements SortUtil.Sort{ LZ wCe$1
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WVD48}HF-
*/ yKhI&
public void sort(int[] data) { z~2{`pET
int[] temp=new int[data.length]; W=HvMD
mergeSort(data,temp,0,data.length-1); XaCvBQ
} jyD~ER}J
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private void mergeSort(int[] data,int[] temp,int l,int r){ n*"r!&Dg
int mid=(l+r)/2; .@): Uh
if(l==r) return ; J4ZHE\
mergeSort(data,temp,l,mid); j7)mC4o:%
mergeSort(data,temp,mid+1,r); LEM%B??&5z
for(int i=l;i<=r;i++){ a4UwhbH
temp=data; 2d*bF.
} g8cBb5(L
int i1=l;
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int i2=mid+1; dnomnY(*<
for(int cur=l;cur<=r;cur++){ *%/O (ohs@
if(i1==mid+1) zG$5g^J
data[cur]=temp[i2++]; t Cb34Wpf
else if(i2>r) n
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data[cur]=temp[i1++]; <O7!(
else if(temp[i1] data[cur]=temp[i1++]; c2NB@T9'v
else =/K)hI!u
data[cur]=temp[i2++]; WzstO}?P(
} inh:b .,B
} TC-Vzk G|
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} ;N#}3lpLqg
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改进后的归并排序: T; tY7;<
N&
package org.rut.util.algorithm.support; `Pc6
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import org.rut.util.algorithm.SortUtil; >3p~>;9sc
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/** {U2AAQSa
* @author treeroot HL&HY)W1gf
* @since 2006-2-2 T/E=?kBR
* @version 1.0 T#Q7L~?zY
*/ <oJ?J^
public class ImprovedMergeSort implements SortUtil.Sort { t$du|q(
#w.0 Cc
private static final int THRESHOLD = 10; hu$eO'M_
>%;i@"
/* Xk.OyQ@
* (non-Javadoc) K ,NmDc^
* =s!0EwDH3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6HZtdRQF
*/ FBwG3x
public void sort(int[] data) { q;bw}4
int[] temp=new int[data.length]; Ea
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mergeSort(data,temp,0,data.length-1); 2!0tD+B
} ^+Nd\tp
_%R^8FjH*
private void mergeSort(int[] data, int[] temp, int l, int r) { +r'&6Me!
int i, j, k; kf>3T@
int mid = (l + r) / 2; 8OZasf
if (l == r) =q0V%h{
return; ( 0/M?YQF
if ((mid - l) >= THRESHOLD)
i=\)[;U
mergeSort(data, temp, l, mid); QTBc_Z
else ^85Eveu
insertSort(data, l, mid - l + 1); Soq#cl'll-
if ((r - mid) > THRESHOLD) <qfAW?tF
mergeSort(data, temp, mid + 1, r); %W9R08`
else ~<!j]@.
insertSort(data, mid + 1, r - mid); HSysME1X:/
tkZUjQIX
for (i = l; i <= mid; i++) { s8&q8r7%
temp = data; ~2\Sn-`
} 8<"g&+T
for (j = 1; j <= r - mid; j++) { ZeuL*c \
temp[r - j + 1] = data[j + mid]; AE>W$x8P
} Bk\Y v0
int a = temp[l]; Wz.iDRFl
int b = temp[r]; w\s`8S
for (i = l, j = r, k = l; k <= r; k++) { :se$<d%
if (a < b) { xgMh@@e
data[k] = temp[i++]; =s":Mx,o
a = temp; `$Rgn3
} else { HghdTs
data[k] = temp[j--]; jz_Y|"{`v
b = temp[j]; X PyDZk/m
} Qu[QcB{ro-
} m[xl)/e
} jbipNgxkr
vN^.MR+<
/** V3ht:>c9qs
* @param data 1v|-+p42
* @param l VA[EY`8
* @param i Hc'Pp{| X
*/ :.ZWYze
private void insertSort(int[] data, int start, int len) { h"+7cc@
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *Z"`g
%,;
} &PE%tm
} H2BRId
} -y|J_;EG
} )XN%pn
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堆排序: U.,S.WP+d
WF`%7A39Af
package org.rut.util.algorithm.support; E>s+"y
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import org.rut.util.algorithm.SortUtil; >fWGiFmlk
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/** Qwpni^D8j
* @author treeroot uQ-GJI^t
* @since 2006-2-2 =(
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* @version 1.0 }qso} WI
*/ PolJo?HZ
public class HeapSort implements SortUtil.Sort{ {EvT7W
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/* (non-Javadoc) KV$&qM.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6=]Gom&S
*/ TiI /I`A
public void sort(int[] data) { l SdA7
MaxHeap h=new MaxHeap(); 8^}/T#l
h.init(data); E#+2)Q
for(int i=0;i h.remove(); RJ@79L*#
System.arraycopy(h.queue,1,data,0,data.length); Xd%qebK
} X3G593ts
j%s,%#al
private static class MaxHeap{ @$r[$D
v
**%&|9He
void init(int[] data){ $x'jf?zs!
this.queue=new int[data.length+1]; ? Vd~
for(int i=0;i queue[++size]=data; ;Va(l$zD
fixUp(size); Q&:)D7m\)S
} rQ{|0+l
} zA9q`ePS
C
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private int size=0; w\G J,e
4,LS08&gh
private int[] queue; FTCIfW
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public int get() { 3XlQ 4
return queue[1]; fE~KWLm
} se %#U40*
+ )Qu,%2
public void remove() { e-y$&[
SortUtil.swap(queue,1,size--); ?YR;o4
fixDown(1); d.+
} vU,7Y|t`
file://fixdown V\zcv @
private void fixDown(int k) { (.P}>$M9
int j; `15}jTi
while ((j = k << 1) <= size) { +8zACs{p
if (j < size %26amp;%26amp; queue[j] j++; U\lbh;9G
if (queue[k]>queue[j]) file://不用交换 E2r5Pg
break; ,WWd%DF)
SortUtil.swap(queue,j,k); .)[E`a
k = j; 1rZ E2
} KsOSPQDGE
} )!27=R/
private void fixUp(int k) { 2*V%S/cck
while (k > 1) { dPu27 "
int j = k >> 1; 5%\K
if (queue[j]>queue[k]) K>+ v" x
break; uuEvH<1
SortUtil.swap(queue,j,k); *d C| X
k = j; 5
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} 5Jo'h]
} m+'1c}n^7
-lJ|x>PG'
} &m