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。 ={qcDgn~C
插入排序: hF%M!otcJ-
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package org.rut.util.algorithm.support; cHs3:F~~
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import org.rut.util.algorithm.SortUtil; `(e :H
/** /yOx=V
* @author treeroot 0l!#u`cCI
* @since 2006-2-2 Cn{Hk)6
* @version 1.0 l":W@R
*/ c3$T3Lu1
public class InsertSort implements SortUtil.Sort{ mj~:MCC
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/* (non-Javadoc) H@Dpht>[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Ms;sdjg}&
*/ W>K^55'
public void sort(int[] data) { E}@C4pS
int temp; "
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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); J2YQdCL
} jD:
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} %;PpwI
} %#HU~X:
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} y&/IJst&aq
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冒泡排序: BVQy@:K/
D(!^$9e9b
package org.rut.util.algorithm.support; p4`1^}f&Ie
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import org.rut.util.algorithm.SortUtil; : T*Q2
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/** Shm> r@C?
* @author treeroot /^.|m3
* @since 2006-2-2 (WM3(US|
* @version 1.0 aurs~
*/ vgz`+Zj*S
public class BubbleSort implements SortUtil.Sort{ "y1Iu
|=?#Xbxz
/* (non-Javadoc) NAbVH{*\U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dbI>\khI
*/ oQ!M+sRmF
public void sort(int[] data) { :E:e ^$p
int temp; T$4{fhV
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for(int i=0;i for(int j=data.length-1;j>i;j--){ zWHq4@K
if(data[j] SortUtil.swap(data,j,j-1); _?{7%(C
} JJ?{V:
}
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} Z_d"<k}I
} "yWw3(V2>
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} )!T~l(g
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选择排序: 6TtB3;5
8nz({Mb9Z
package org.rut.util.algorithm.support; U{U"%XdO
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import org.rut.util.algorithm.SortUtil; ?,} u6tH
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/** ys[Li.s:
* @author treeroot :^;c(>u{
* @since 2006-2-2 R.~[$G!
* @version 1.0 odRiCiMH
*/ 9!FX*}dC
public class SelectionSort implements SortUtil.Sort { !jCgTo
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/*
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* (non-Javadoc) 9&6j uL
* %uW=kr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *@U{[J
*/ hHs/Qtq
public void sort(int[] data) { 3DU1c?M:
int temp; Ndmt$(b
for (int i = 0; i < data.length; i++) { Z>[7#;;
int lowIndex = i; 2*#|t: (c
for (int j = data.length - 1; j > i; j--) { }X(&QZ7i`
if (data[j] < data[lowIndex]) { +mQ5\14#
lowIndex = j; \2SbW7"/;P
} m'4f'tbN
} )^2eC<t
SortUtil.swap(data,i,lowIndex); qd`e:s*%
} >lI7]hbIs
} &w@]\7L,:
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} n 8cA8<
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Shell排序: lC i{v.
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package org.rut.util.algorithm.support; m[hL
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import org.rut.util.algorithm.SortUtil; D3pz69W
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/** 6Q.S
* @author treeroot QY\k3hiqn
* @since 2006-2-2 dcz?5O_{,
* @version 1.0 \Mf>X\}
*/ /{M<FVXK+|
public class ShellSort implements SortUtil.Sort{ YQVo7"`%
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/* (non-Javadoc) p/H.bG!z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?gH[la
*/ tUn>=>cWP
public void sort(int[] data) { Q
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for(int i=data.length/2;i>2;i/=2){ bIQ,=EA1
for(int j=0;j insertSort(data,j,i); TBlSZZ-55]
} 53Adic
} ]#!uke Q
insertSort(data,0,1); B(Sy.n
} [&x9<f6
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/** 8K%N7RL|
* @param data G0FzXtu)q
* @param j }nmlN
* @param i 2YD\KXDo
*/ iFI74COam
private void insertSort(int[] data, int start, int inc) { n1[c\1
int temp; t],a1I.gk
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )"?4d[ 5
} SV7;B?e%Y
} uF ?[H -y
} K)Y& I
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} bS_#3T
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快速排序: (vXr2Z<l
Sp`l>BL
package org.rut.util.algorithm.support; 7ZcF0h
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import org.rut.util.algorithm.SortUtil; *$p*'vR
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/** 2"/MM2s
* @author treeroot l#)X/(?;
* @since 2006-2-2 cNll??j
* @version 1.0 `oRyw6Sko
*/ h~dQ5%
public class QuickSort implements SortUtil.Sort{
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`Rq=:6U;3
/* (non-Javadoc) 8|&,JdT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4Qub{Uym
*/ #2Rz=QI
public void sort(int[] data) { `/|
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quickSort(data,0,data.length-1); }F08o,`?
} 4pmeu:26
private void quickSort(int[] data,int i,int j){ =lacfPS
int pivotIndex=(i+j)/2; dSI"yz
file://swap zzmC[,u}
SortUtil.swap(data,pivotIndex,j); _,3ljf?WQM
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int k=partition(data,i-1,j,data[j]); -t-f&`S||
SortUtil.swap(data,k,j); 6 2xOh\(
if((k-i)>1) quickSort(data,i,k-1); UpoSC
if((j-k)>1) quickSort(data,k+1,j); -@Ap;,=
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} d0J/"<
/** !j~wAdHk
* @param data .)E#*kLWR
* @param i L!f~Am:#
* @param j vHaM yA-
* @return Bfb~<rs[
*/ ct+F\:e
private int partition(int[] data, int l, int r,int pivot) { $QbJT`,mr
do{ W'G|sk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d_[H|H9i6
SortUtil.swap(data,l,r); gC7!cn
} `Fqth^RK?p
while(l SortUtil.swap(data,l,r); G':3U
return l; 5Ds[?
} [@$ SLl^Y
]:%DDlRb
} >a3m!`lq
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改进后的快速排序: 2mY!gVi
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package org.rut.util.algorithm.support; Bc>j5^)8w
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import org.rut.util.algorithm.SortUtil; 4[ uqsJB
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/** hY}Q|-|
* @author treeroot J,$xQ?,wE
* @since 2006-2-2 :s)cTq| 3
* @version 1.0 If'q8G3]-
*/ }:$cK(|
public class ImprovedQuickSort implements SortUtil.Sort { xU'z>y4V$
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private static int MAX_STACK_SIZE=4096; `
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private static int THRESHOLD=10; 14$%v;Su4
/* (non-Javadoc) xd?=#d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NKY|Z\
*/ j26i+Z
public void sort(int[] data) { wm@m(ArE=
int[] stack=new int[MAX_STACK_SIZE]; 7cc^n\c?Y
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int top=-1; b'4a;k!rS
int pivot; eP~bl
int pivotIndex,l,r; PRfq_:xy
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stack[++top]=0; `IN!#b+Eo
stack[++top]=data.length-1; lpT&v;$`
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while(top>0){ |v+z*}fKw
int j=stack[top--]; 0E\#!L
int i=stack[top--]; x,nl PU
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pivotIndex=(i+j)/2; ~+.=
pivot=data[pivotIndex]; z ]f(lwo{
#-|fdcb
SortUtil.swap(data,pivotIndex,j); 1dvP2E
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file://partition Ry95a%&/s
l=i-1; NuOA'e+i
r=j; Kebr>t8^
do{ %g:Q?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >H+tZV
SortUtil.swap(data,l,r); {@X>!]
} j$T12
while(l SortUtil.swap(data,l,r); AojL4H|
SortUtil.swap(data,l,j);
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if((l-i)>THRESHOLD){ l8~(bq1
stack[++top]=i; i]n2\v AG
stack[++top]=l-1; cGm3LS6]*
} Z/,R{Jgt"
if((j-l)>THRESHOLD){ #91^1jyMf
stack[++top]=l+1; %P}H3;2
stack[++top]=j; |GMo"[
} 97Dq;
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} -k + jMH
file://new InsertSort().sort(data); ;gBR~W
insertSort(data); &G2&OFAr]q
} )>2L(~W
/** n1%2sV)>
* @param data /<_!Gz.@uG
*/ WIU]>_$.
private void insertSort(int[] data) { !<TkX/O
int temp; zgY VB}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nlpEkq
} VL)<u"d4
} H!*ypJ
} U/'l "N[
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} RB4n>&Y
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归并排序: g$]WKy(D
89>}`:xS^
package org.rut.util.algorithm.support; af<h2r
np2&W'C/i
import org.rut.util.algorithm.SortUtil; p2Khfl6-
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/** Uha.8
* @author treeroot +TbAtkEF*
* @since 2006-2-2 )l9KDObis
* @version 1.0 ECt<\h7}
*/ OPN\{<`*d
public class MergeSort implements SortUtil.Sort{ D\M"bf>q1
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/* (non-Javadoc) \^6 [^\@[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2|x
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*/ %GTFub0F
public void sort(int[] data) { R?u(aY)P
int[] temp=new int[data.length]; SY|K9$M^
mergeSort(data,temp,0,data.length-1); eL~xS: VT
} 'IY?=#xr'`
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private void mergeSort(int[] data,int[] temp,int l,int r){ &]YyV .
int mid=(l+r)/2; tN<X3$aN
if(l==r) return ; i&m_G5u88
mergeSort(data,temp,l,mid); A|LO!P,w
mergeSort(data,temp,mid+1,r); 3Ewdu
for(int i=l;i<=r;i++){ O?g;Ny
temp=data; @%fTdneH
} bN-!&Td
int i1=l; ,K[e?(RP
int i2=mid+1; ,KJHY m=Q
for(int cur=l;cur<=r;cur++){ TC-Vzk G|
if(i1==mid+1) qkKl;Z?Y:
data[cur]=temp[i2++]; ;N#}3lpLqg
else if(i2>r) g"748LY>=p
data[cur]=temp[i1++]; |\dv$`_T
else if(temp[i1] data[cur]=temp[i1++]; -$"$r ~ad
else =Rx4ZqTI|
data[cur]=temp[i2++]; O:#YLmbCN
} rJGh3%
} pl%!AY'oE>
<y8oYe_!
} Tr_gc~
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改进后的归并排序: F%<*a,m6g
!`%j#bv
package org.rut.util.algorithm.support; XA<h,ONE?
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import org.rut.util.algorithm.SortUtil; PwW$=M{\.
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/** K ,NmDc^
* @author treeroot 8Azh&c
* @since 2006-2-2 ,r*Kxy
* @version 1.0 EF!J#N2
*/ ;4!H- qZ
public class ImprovedMergeSort implements SortUtil.Sort { K@*+;6y@
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private static final int THRESHOLD = 10; YIwa = ^
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/* ;&<N1
* (non-Javadoc) }xC2~
* G+N1#0,q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V<#KFm$>C
*/ nBp6uNK[
public void sort(int[] data) { )qb'tZz/g_
int[] temp=new int[data.length]; 5H.~pc2y
mergeSort(data,temp,0,data.length-1); <L8|Wz
} !b_(|~7Lc
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private void mergeSort(int[] data, int[] temp, int l, int r) { l#enbQ`-~
int i, j, k; BW)-F (v
int mid = (l + r) / 2; 7:olStK
if (l == r) lND2Kb
return; m[xl)/e
if ((mid - l) >= THRESHOLD) jbipNgxkr
mergeSort(data, temp, l, mid); `2]0 X#R
else 'y;Kj
insertSort(data, l, mid - l + 1); 1W'Ai"DLw
if ((r - mid) > THRESHOLD) %?+vtX
mergeSort(data, temp, mid + 1, r); +ZNOvcsV
else \1G'{#Q
insertSort(data, mid + 1, r - mid); =tD*,2]
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for (i = l; i <= mid; i++) { K7`6G[RMb
temp = data; hUi@T}aA|
} %<-OdyM
for (j = 1; j <= r - mid; j++) { .2c/V
temp[r - j + 1] = data[j + mid]; l+@;f(8}
} pp"#pl
int a = temp[l]; s 4_Dqm
int b = temp[r]; Zpg;hj5_
for (i = l, j = r, k = l; k <= r; k++) { enJ;#aA
if (a < b) { Qwpni^D8j
data[k] = temp[i++]; uQ-GJI^t
a = temp; =(
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} else { }qso} WI
data[k] = temp[j--]; ]Z5m_-I
b = temp[j]; R ?iCJ5 m
} Qz(2Iu{E]
} c+3`hVV
} QO}~"lMj
SM8N*WdiU
/** 8^}/T#l
* @param data E#+2)Q
* @param l Xd%qebK
* @param i \ji\r ]k
*/ *|Vf1R]
private void insertSort(int[] data, int start, int len) { :ZY%-]u7
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3eE=>E4,
} :rU.5(,
} 3S3(Gl
} +"-l~`+<es
} u!|_bI3
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堆排序: syBpF:`-W
1<'z)r4
package org.rut.util.algorithm.support; D/Ki^E
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*
import org.rut.util.algorithm.SortUtil; ]]K?Q
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/** */h(4Hz
* @author treeroot 3XlQ 4
* @since 2006-2-2 fE~KWLm
* @version 1.0 y!gPBkG&3n
*/ xR0*w7YE
public class HeapSort implements SortUtil.Sort{ e-y$&[
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/* (non-Javadoc) d.+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vU,7Y|t`
*/ V\zcv @
public void sort(int[] data) { (.P}>$M9
MaxHeap h=new MaxHeap(); `f}s<At
h.init(data); z)hK 2JD
for(int i=0;i h.remove(); 8%CznAO"?W
System.arraycopy(h.queue,1,data,0,data.length); 68,j~e3-i
} MS;^:t1`
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private static class MaxHeap{ QD,m`7(
k_]'?f7Z
void init(int[] data){ S. `y%t.GP
this.queue=new int[data.length+1]; !6=s{V&r1
for(int i=0;i queue[++size]=data; s`=| D'G(=
fixUp(size); &*OwoTgk+
} }&=l)\e
} OU%"dmSDk
g/.FJ-I*
private int size=0; M}o.= Iqa
zNX=V!$
private int[] queue; #a=]h}&1?
&m