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。 W/\M9
插入排序: -(Z%?]+
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package org.rut.util.algorithm.support; G]$.bq[v
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import org.rut.util.algorithm.SortUtil; d,"6s=4(q
/** ZJod=^T
* @author treeroot 4)DI0b"
* @since 2006-2-2 88}=VS
* @version 1.0 ,P T5-9 m
*/ l>J>?b=x"[
public class InsertSort implements SortUtil.Sort{ Q|CLis-
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/* (non-Javadoc) _'.YC<;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *oW^P~m/
*/ s (hJ *
public void sort(int[] data) { '1Z3MjX
int temp; S{l
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `
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} 1c2zFBl.&
} n{@^ne4m
} _P:}]5-|
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} kgQyG[u
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冒泡排序: 'A#bBn,|
jkrv2 `"
package org.rut.util.algorithm.support; d*===~
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import org.rut.util.algorithm.SortUtil; "L)=Y7Dx
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/** ]6*+i $
* @author treeroot }23#z
* @since 2006-2-2 -!s?d5k")
* @version 1.0 ,iy;L_N
*/ S*D Bzl
public class BubbleSort implements SortUtil.Sort{ $.g)%#h:
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/* (non-Javadoc) #6'+e35^ 8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;"1
*/ br[n5
public void sort(int[] data) { ~t,-y*=
int temp; g3h:oQCS
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]CnqPLqL
if(data[j] SortUtil.swap(data,j,j-1); -:P`Rln
} E979qKl
} $YPQi.
} x392uS$#
} jWX^h^n7K
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} D$vP&7pOr4
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选择排序: 7Gs0DwV
;/-X;!a>
package org.rut.util.algorithm.support; K;NaiRP#k
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import org.rut.util.algorithm.SortUtil; F,NS:mE
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/** ,<cF<9h
* @author treeroot w~S~
* @since 2006-2-2 '-?t^@
* @version 1.0 q@6Je(H
*/ yrgb6)]nm@
public class SelectionSort implements SortUtil.Sort { HEMq4v4
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/* QN'v]z
* (non-Javadoc) ZBf9Upg
* *9?T?S|^$F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (F.vVldBy
*/ bpv?$j-j
public void sort(int[] data) { 2{gd4Kt6.
int temp; d$O)k+j
for (int i = 0; i < data.length; i++) { [-pB}1Dxb
int lowIndex = i; 3L5o8?[
for (int j = data.length - 1; j > i; j--) { Ze:Y"49S+>
if (data[j] < data[lowIndex]) { 'aAay*1
lowIndex = j; rf:CB&u
} Jemb0Qv
} eCI0o5U
SortUtil.swap(data,i,lowIndex); >RL|W}tI4
} /U1 jCLR'
} J]=2] oI2
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} >8>}o4Q/X
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Shell排序: 7K\H_YY8#
OM4q/!)A]
package org.rut.util.algorithm.support; w-3 B~e
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import org.rut.util.algorithm.SortUtil; @m99xF\e
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/** !~5=tK
* @author treeroot A[mm_+D>
* @since 2006-2-2 (8?5REz
* @version 1.0 w]Fi:kV
*/ _;x7vRWmN
public class ShellSort implements SortUtil.Sort{ FhyA_U%/nF
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/* (non-Javadoc) A!\-e*+W=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GSh~j-C'
*/ i)[8dv
public void sort(int[] data) { G._E9
for(int i=data.length/2;i>2;i/=2){ oP 0ZJK&;
for(int j=0;j insertSort(data,j,i); Jc74A=sT
} ?t{ 2y1
} nRL2Z5iO-
insertSort(data,0,1); :+nECk
} "k%B;!We)
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/** 3|FZ!8D
* @param data nP+]WUnY
* @param j uSRvc0R\
* @param i ?7:?OX
*/ #FHyP1uyc
private void insertSort(int[] data, int start, int inc) { HR>
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int temp; wV,l }Xb-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sJHN4
} .bT|:Q~@{
} 1hT!~'
} a=!I(50
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} !_|rVg.
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快速排序: Q5N;MpJ-
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package org.rut.util.algorithm.support; "Y7
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import org.rut.util.algorithm.SortUtil; <f'2dT@6
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/** ji|`S\u#b
* @author treeroot _#nP->0)
* @since 2006-2-2 o5 fXe}pl@
* @version 1.0 )=
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*/ Dn#GoDMJ[
public class QuickSort implements SortUtil.Sort{ #1v>3H(
%ys-y?r
/* (non-Javadoc) 9b0M'x'W5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nd"Rt
*/ y.LJ5K$&a
public void sort(int[] data) { R&OqmhT!
quickSort(data,0,data.length-1); }#rdMh
} 4G%!t`?q
private void quickSort(int[] data,int i,int j){ ~<%/)d0
int pivotIndex=(i+j)/2; -C7IUat<
file://swap t!g9,xG<X
SortUtil.swap(data,pivotIndex,j); Px>Gc:!>
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int k=partition(data,i-1,j,data[j]); ^rKA=siz
SortUtil.swap(data,k,j); Y\qiYra
if((k-i)>1) quickSort(data,i,k-1); *$KUnd-T
if((j-k)>1) quickSort(data,k+1,j); 4rh*&'
v GF<
} ~[mAv#d&i
/** &dino
* @param data BE;J/
* @param i JVORz-uBs
* @param j #0hX'8];(
* @return nVTCbV
*/ kJ JUu
private int partition(int[] data, int l, int r,int pivot) { n>w/T"
do{ WG{mg/\2(C
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6G<t1?_yD
SortUtil.swap(data,l,r); xF+a.gAIb
} ;Ly(O'9
while(l SortUtil.swap(data,l,r); Ef1R?<
return l; \xH#X=J
} "\'g2|A
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} \qrSJ=}t
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改进后的快速排序: h9McC 3
Qr/8kWa0C
package org.rut.util.algorithm.support; 86^xq#+Uw
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import org.rut.util.algorithm.SortUtil; \k=.w
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/** [3s p
* @author treeroot vu%:0p`K
* @since 2006-2-2 Uf`lGGM
* @version 1.0 *|f&a
*/ wXc"Car)
public class ImprovedQuickSort implements SortUtil.Sort { ERW>G{+
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private static int MAX_STACK_SIZE=4096; 2o`a^'Iw
private static int THRESHOLD=10; 5!55v
/* (non-Javadoc) \;?=h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H(^O{JC]y!
*/ gDw:Z/1X`
public void sort(int[] data) { OAc*W<Q0
int[] stack=new int[MAX_STACK_SIZE]; 1$q>\
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int top=-1; VK*2`Z1
int pivot; H:X=v+W
int pivotIndex,l,r; !9!kb
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stack[++top]=0; 959i2z
stack[++top]=data.length-1; l_lm)'ag
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while(top>0){ qzVmsxBNP
int j=stack[top--]; w$9aTL7
int i=stack[top--]; )
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pivotIndex=(i+j)/2; *-timVlaE
pivot=data[pivotIndex]; 74 c1i
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SortUtil.swap(data,pivotIndex,j); Ul?Ha{W
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file://partition JM#jg-z,~
l=i-1; d9XX^nY.
r=j; sW~Z?PFP
do{ `eIX*R
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :\@WY
SortUtil.swap(data,l,r); f:k3j}&
} w#Y<~W&
while(l SortUtil.swap(data,l,r); )$/Gh&1G
SortUtil.swap(data,l,j); 2&E1) ^
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if((l-i)>THRESHOLD){ /3*75
stack[++top]=i; C7(kV{h$d
stack[++top]=l-1; j:%~:
} @L%9NqE`O
if((j-l)>THRESHOLD){ R|T_9/#)
stack[++top]=l+1; M%wj6!5
stack[++top]=j; '|0Dt|$
} *M_.>".P
D?rQQxb
} #&G^%1!
file://new InsertSort().sort(data); IKM=Q.
7j
insertSort(data); ui4H(A'}
} =:U63
/** jg?B][
* @param data Dg]ua5jk
*/ W"fdK_F\
private void insertSort(int[] data) { B.&ly/d
int temp; NIDK:qdR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +[9~ta|j
} 9n!<M)E
} 4uv'l3
} ZpPm>|w
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} J{=by]-rD,
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归并排序: /vFw5KUu
_9E7;ew
package org.rut.util.algorithm.support; ;m}lmq,
da3]#%i0
import org.rut.util.algorithm.SortUtil; $4`RJ{ZJw]
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/** guv)[:cd;
* @author treeroot ,MwwA@,9-
* @since 2006-2-2 rMqWXGl`(
* @version 1.0 " *xQN "F
*/ /sENoQR
public class MergeSort implements SortUtil.Sort{ I<*U^e
dL>0"UN}-
/* (non-Javadoc) b0]y$*{j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H~+D2A
*/ >R/^|hnJ
public void sort(int[] data) { -^8gZk/(W
int[] temp=new int[data.length]; XpWqL9s_E
mergeSort(data,temp,0,data.length-1); 2RKI M(~
} CD(2A,u)/
6OMywGI[Z
private void mergeSort(int[] data,int[] temp,int l,int r){ $=n|MbFl
int mid=(l+r)/2; /Cr0jWu
_
if(l==r) return ; j_SRCm~:
mergeSort(data,temp,l,mid); h2+vl@X
mergeSort(data,temp,mid+1,r); q>w@W:t Z
for(int i=l;i<=r;i++){ #rzq9}9tB
temp=data; wH[@#UP3l
} :{C#<g`
int i1=l; GVZ/`^ndM
int i2=mid+1; |_aE~_
for(int cur=l;cur<=r;cur++){ z6bTcs"7h
if(i1==mid+1) eKpH|S!xU
data[cur]=temp[i2++]; yNAvXkp
else if(i2>r) XU.ZYYZ=
data[cur]=temp[i1++]; 38Lc|w
else if(temp[i1] data[cur]=temp[i1++]; o"t+G/M
else -MoI{3a
data[cur]=temp[i2++]; RX:\@c&
} N(Us 9
} 7ZS5u+o
M)6_Tal
} ,T_HE3 K
=35^k-VS
改进后的归并排序: VB*$lxX
zl46E~"]x
package org.rut.util.algorithm.support; y[S5
UDV,c o
import org.rut.util.algorithm.SortUtil; nCEt*~t9VE
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/** lu_ y 9o^
* @author treeroot D0=D8P}H:
* @since 2006-2-2 =jip* E^
* @version 1.0 ,JRYG<O_T
*/ -]\%a=]
public class ImprovedMergeSort implements SortUtil.Sort { URmx8=q
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private static final int THRESHOLD = 10; /iNCb&[
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/* JAen=%2b
* (non-Javadoc) W'rft@J$
* wH~Q4)#=o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]q7\
*/ or\
2)
public void sort(int[] data) { $I~=t{;"XV
int[] temp=new int[data.length]; Lp20{R
mergeSort(data,temp,0,data.length-1); ~R7rIP8Wr
} Lie\3W
\dCoY0Z ;
private void mergeSort(int[] data, int[] temp, int l, int r) { EUmQn8
int i, j, k; .Ff;St
int mid = (l + r) / 2; XCoN!~
if (l == r) R>BI;IcX
return; =El.uBz{
if ((mid - l) >= THRESHOLD) E}mnGe
mergeSort(data, temp, l, mid); 15#v|/wI'
else wqyx{W`~w
insertSort(data, l, mid - l + 1); ,g@U*06
if ((r - mid) > THRESHOLD) w<&Nn`V
mergeSort(data, temp, mid + 1, r); ]K?z|&N|HK
else 4vPQuk!
insertSort(data, mid + 1, r - mid); =:v\}/
C78YHjy
for (i = l; i <= mid; i++) { `Z>4}<~+
temp = data; :}FMauHh
} $jo}?Y+
for (j = 1; j <= r - mid; j++) { N \[Cuh8Fe
temp[r - j + 1] = data[j + mid];
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} yPn5l/pDDr
int a = temp[l]; u2y?WcMv
int b = temp[r]; S%-L!V ,
for (i = l, j = r, k = l; k <= r; k++) { -4Zf0r1u
if (a < b) { 7EOn4I2@[
data[k] = temp[i++]; q0jzng
a = temp; C0zE<fl
} else { <a2t"rc
data[k] = temp[j--]; 'CjcOI
s
b = temp[j]; ='T<jV`evu
} oat*ORL
} jL^zS XQB
} BQ,]]}e43z
p82&X+v/p
/** X3".
* @param data zv||&Hi
* @param l }7+G'=XI/
* @param i i>_V?OT#5
*/ +*a:\b"fx
private void insertSort(int[] data, int start, int len) { z(iB$;M
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \evK.i*KfA
} nORm7sa9
} XB UO
} M/:kh,3
} fBS;~;l
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堆排序: fI`6]?W
Ti#2D3
package org.rut.util.algorithm.support; ,E$^i~OO
X_Is#&6;
import org.rut.util.algorithm.SortUtil; &48wa^d
*I(>[m!
/** s[nXr
* @author treeroot Dsw(ti`@
* @since 2006-2-2 _OZrH(8
* @version 1.0 ' ]l,
*/ .d^8w97
public class HeapSort implements SortUtil.Sort{ NwIl~FNK
G?&0Z++
/* (non-Javadoc) jAfUz7@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AVGb;)x#
*/ {1'XS,2
public void sort(int[] data) { iyc}a6g
MaxHeap h=new MaxHeap(); Dh BUMDoB
h.init(data); .8uJ%'$)
for(int i=0;i h.remove(); qS*qHT(u19
System.arraycopy(h.queue,1,data,0,data.length); 9(QY~F
} \'&:6\-fw
R#`hT
private static class MaxHeap{ &=nwb4
Uxn_nh
void init(int[] data){ ~4.Tq{
this.queue=new int[data.length+1]; <QQgOaS`2
for(int i=0;i queue[++size]=data; vK!,vKa.
fixUp(size); F/tBr%RV
} 4gG&u33RrE
} GQ[:vX`
36@)a5
private int size=0; `S2YBKz,1
UaiDo"i
private int[] queue; qtnLQl"M
QK&<im-
public int get() { 7C9qkQ
Jqn
return queue[1]; Yl% Ra1
} O`g44LW2n
i{I'+%~R
public void remove() { *Tl"~)'t~
SortUtil.swap(queue,1,size--); -d[9mS
fixDown(1); 2BS2$#c>
} S)C =Q~&
file://fixdown T12?'JL^r
private void fixDown(int k) { n9<QSX&~<
int j; lfOF]Kiqr
while ((j = k << 1) <= size) { 5]:fkx
if (j < size %26amp;%26amp; queue[j] j++; D06'"
if (queue[k]>queue[j]) file://不用交换 @C0{m7q
break; X<Rh-1$8F
SortUtil.swap(queue,j,k); 4};iL)
k = j; 4 C/
} 1u:OzyJy
} #
5v 2`|)
private void fixUp(int k) { >(ku*
while (k > 1) { sl}bNzT#
int j = k >> 1; y)t< r
if (queue[j]>queue[k]) *^bqpW2$q
break; R;.zS^LL
SortUtil.swap(queue,j,k); sEt5!&