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。 'Hgk$Im+
插入排序: 0X$2~jV>
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package org.rut.util.algorithm.support; >[~`rOU*|Y
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import org.rut.util.algorithm.SortUtil; BqpJvRJd
/** L=.@hs
* @author treeroot 6G(K8Q{>
* @since 2006-2-2 9ph>4u(R
* @version 1.0 (4IP&^j:\
*/ ;kZJnN"y
public class InsertSort implements SortUtil.Sort{ ^E)8Sb9t
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/* (non-Javadoc) m|;gl|dTB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e.Q'l/g
*/ ;iQw2XhT
public void sort(int[] data) { y-S23B(
int temp; \?|^w.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0g
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} yTNHM_P
} IsVR4t]
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冒泡排序: !Q,Dzv"7
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package org.rut.util.algorithm.support; NC YOY
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import org.rut.util.algorithm.SortUtil; ScQ9p379
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/** W}|k!_/
* @author treeroot Z`Jt6QgW
* @since 2006-2-2 BAG#YZB
* @version 1.0 nITkgN:s
*/ G7KOJZb+D
public class BubbleSort implements SortUtil.Sort{ %|ioNXMu
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/* (non-Javadoc) k4en/&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n\$.6
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*/ vg1E@rH|}
public void sort(int[] data) { k4!p))ql
int temp; H`yUSB
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for(int i=0;i for(int j=data.length-1;j>i;j--){ '5A&c(
if(data[j] SortUtil.swap(data,j,j-1); _bv9/# tR
} z uo:yaO
} KI].T+I
} !Q}Bz*Y
} +:/.\3v71
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} WDr=+=Zj
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选择排序: @wVDe\% ,
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package org.rut.util.algorithm.support; w}M)]kY
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import org.rut.util.algorithm.SortUtil; 4tvZJS
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/** ]
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* @author treeroot ]4'V59\
* @since 2006-2-2 IU"n`HS
* @version 1.0 f1B t6|W%
*/
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public class SelectionSort implements SortUtil.Sort { o*[[nK*fL
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/* X@/wsW(kM\
* (non-Javadoc) q9\(<<f|
* :3b\ pEO9\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .$+,Y4q~(
*/ Ax9A-|
public void sort(int[] data) { 3GMrdG?Y
int temp; 76u\#{5
for (int i = 0; i < data.length; i++) { dV^ck+
int lowIndex = i; zQB1C
for (int j = data.length - 1; j > i; j--) { oHF,k
if (data[j] < data[lowIndex]) { sdKm@p|/|
lowIndex = j; [vnxp/v/<
} |-%dN }O
} jS|jPk|I.
SortUtil.swap(data,i,lowIndex); ,o0[^-b<
} s-F3(mc(
} -AQ
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} d7Z$/ $
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Shell排序: '
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package org.rut.util.algorithm.support; |T*t3}
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import org.rut.util.algorithm.SortUtil; vtzbF1?O
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/** UY)Iu|~0b
* @author treeroot Ng*O/g`%L
* @since 2006-2-2 xo(>nFjo
* @version 1.0 >QBDxm
*/ Zlv`yC*r
public class ShellSort implements SortUtil.Sort{ @y|JIBBRc
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/* (non-Javadoc) !$Arc^7r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w-Q=oEt
*/ R78P](1\>
public void sort(int[] data) { mE9ytFH\k
for(int i=data.length/2;i>2;i/=2){ ~`0=-Qkd
for(int j=0;j insertSort(data,j,i); ("=B,%F_
} uK[gI6M
} JaN53,&<
insertSort(data,0,1); 7+$P6[*
} r90R~'5x9
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/** ;F/s!bupCM
* @param data xoQqku"vn
* @param j iH-(_$f;
* @param i 4EhWK;ra
*/ I=k`VI d:
private void insertSort(int[] data, int start, int inc) { vfh\X1Ui}
int temp; '=UsN_@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n,p \~Tu,
} ^>s{o5H&
} hgdr\
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} \'B%lXh
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} >6'brb
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快速排序: HZ89x|Hk_
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package org.rut.util.algorithm.support; f%%'M.is
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import org.rut.util.algorithm.SortUtil; #
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/** %kk~qvW
* @author treeroot sb%l N
* @since 2006-2-2 hNF, sA
* @version 1.0 sv#/ 78 ~|
*/ ?Lr:>
public class QuickSort implements SortUtil.Sort{ l YjPrA]TC
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/* (non-Javadoc) G+NTn\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7K/t>QrBtU
*/ (2/i1)Cq
public void sort(int[] data) { ?9z1'6
quickSort(data,0,data.length-1); aY%{?8PsB
} @Z@S;RWSU
private void quickSort(int[] data,int i,int j){ #/WjKr n
int pivotIndex=(i+j)/2; w)}@svv"
file://swap V&d?4i4/Q
SortUtil.swap(data,pivotIndex,j); -M-y*P)
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int k=partition(data,i-1,j,data[j]); \>e>J\t:
SortUtil.swap(data,k,j); 9|>5;Ej
if((k-i)>1) quickSort(data,i,k-1); T{Yk/Z/}?
if((j-k)>1) quickSort(data,k+1,j); U> {CG+X
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} QaAMiCZFR
/** ^K!R4Y4t
* @param data (FOJHjtkM
* @param i :;o?d&C
* @param j tsf!Q
* @return w)Y}hlcq
*/ D^w<V%].
private int partition(int[] data, int l, int r,int pivot) { L$; gf_L
do{ d)v!U+-|'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WZ
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SortUtil.swap(data,l,r); >V@,K z1
} w%kaM=
while(l SortUtil.swap(data,l,r); ~tqNxlA
return l; dkOERVRe
} w6'8L s
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} o%v,6yv
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改进后的快速排序: z9^_5la#
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package org.rut.util.algorithm.support; @C5%`{\
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import org.rut.util.algorithm.SortUtil; s;:quM
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/** xf8.PqVNo
* @author treeroot Jl89}Sf
* @since 2006-2-2 &3Mps[u:h
* @version 1.0 &sS]h|2Z5
*/ aGmbB7[BZ
public class ImprovedQuickSort implements SortUtil.Sort { Wr.~Ns<
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private static int MAX_STACK_SIZE=4096; f{#Mc
private static int THRESHOLD=10; ,CnUQx0
/* (non-Javadoc) ^4>Icz^ F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \J^xpR_0u
*/ Td![Id
public void sort(int[] data) { 20mZ{_%
int[] stack=new int[MAX_STACK_SIZE]; jp-]];:aPJ
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int top=-1; .n)0@X!
int pivot; %gXNWxv
int pivotIndex,l,r; Q9
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stack[++top]=0; IV$2`)[A&X
stack[++top]=data.length-1; axd9b,
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while(top>0){ g?!;04
int j=stack[top--]; 7R".$ p
int i=stack[top--]; C,3yu,'
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pivotIndex=(i+j)/2; 0 mR
pivot=data[pivotIndex]; 2)>Ty4*
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SortUtil.swap(data,pivotIndex,j); AmT*{Fz8
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file://partition c#(&\g2H
l=i-1; 1z=}`,?>
r=j; WFFpW{
do{ nB86oQ/S
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m{sch`bP
SortUtil.swap(data,l,r); v7-
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} hdee]qLS
while(l SortUtil.swap(data,l,r); [KwwhI@3
SortUtil.swap(data,l,j); QjwCY=PK!
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if((l-i)>THRESHOLD){ .AZ+|?d
stack[++top]=i; cOEzS
stack[++top]=l-1; *g/@-6
} WjMP]ND#c
if((j-l)>THRESHOLD){ @5(HRd
stack[++top]=l+1; `pd1'5Hm
stack[++top]=j; 6 0Obek`
} YiPp#0T[Gx
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} 'k[gxk|d2
file://new InsertSort().sort(data); f*~z|
insertSort(data); dCM*4B<
} L\UM12
/** <x2 F5$@
* @param data gb/M@6/j
*/ &:)e
private void insertSort(int[] data) { x+5y287#
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); N\dr_
} SvGs?nUU
} )?PRG=
} UQ 'U
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} a'ODm6#
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归并排序: b(H)8#C
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package org.rut.util.algorithm.support; n;Etn!4M
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import org.rut.util.algorithm.SortUtil; !4G<&hvb
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/** bwAL:
* @author treeroot & A<Pf.Us
* @since 2006-2-2 mF !=H%
* @version 1.0 CiGN?1|
*/ 3
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public class MergeSort implements SortUtil.Sort{ %S<( z5
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/* (non-Javadoc) TID0x/j"K5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }ZWeb#\
*/ o(@F37r{?
public void sort(int[] data) { $R<eXDW6:
int[] temp=new int[data.length]; DweWFipyPi
mergeSort(data,temp,0,data.length-1); \i#0:3s.
} 4';tMiz
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private void mergeSort(int[] data,int[] temp,int l,int r){ oWUDTio#[
int mid=(l+r)/2; {m%X\s;ni
if(l==r) return ; XP-4=0 zd
mergeSort(data,temp,l,mid); XOy#?X/`
mergeSort(data,temp,mid+1,r); 4hv'OEl
for(int i=l;i<=r;i++){ d.&~n`Rv!p
temp=data; %7?v='s=
} OAQ'/{~7
int i1=l; XJ;JDch
int i2=mid+1; 6gfdXVN5
for(int cur=l;cur<=r;cur++){ +<ey
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if(i1==mid+1) Up$vBE8i]
data[cur]=temp[i2++]; k]`3if5>
else if(i2>r) <!vAqqljt
data[cur]=temp[i1++]; Uq6..<#
else if(temp[i1] data[cur]=temp[i1++]; n[/|M
else %j=,c{`Q
data[cur]=temp[i2++]; s"|N-A=cS
} YtrMJ"
} ?Y~>H2
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} i4"xvLK4
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改进后的归并排序: | JL47FR
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package org.rut.util.algorithm.support; \0pJ+@\T9
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import org.rut.util.algorithm.SortUtil; P
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/** 4>^ %_Xj[
* @author treeroot 2g^Kf,m
* @since 2006-2-2 E}qeh"sJt
* @version 1.0 pz^"~0o5
*/ mHox
public class ImprovedMergeSort implements SortUtil.Sort { d}',Bl+u{$
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private static final int THRESHOLD = 10; ^dP@QMly6
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/* f(?`PD[
* (non-Javadoc) +Z[%+x92
* 0p$?-81BJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?xX`_l
*/ ^dYLB.'=
public void sort(int[] data) { D@Fa~O$75
int[] temp=new int[data.length]; k 9Kv
mergeSort(data,temp,0,data.length-1); 4#=!VK8ZH
} Xb3vvHdI
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private void mergeSort(int[] data, int[] temp, int l, int r) { *(d^k;
int i, j, k; &^9>h/-XT
int mid = (l + r) / 2; M)EUR0>8
if (l == r) -ij1%#t z
return; J\
if ((mid - l) >= THRESHOLD) Ye!=
mergeSort(data, temp, l, mid); e= "/oo
else a+mq=K
insertSort(data, l, mid - l + 1); ,lA J{5\#
if ((r - mid) > THRESHOLD) N
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mergeSort(data, temp, mid + 1, r); Ze Shn
else foE2rV/Y
insertSort(data, mid + 1, r - mid); :ykZ7X&
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for (i = l; i <= mid; i++) { :eQxdi'
temp = data; 3g2t{%
} ZLKS4
for (j = 1; j <= r - mid; j++) { <WBGPzVZE
temp[r - j + 1] = data[j + mid];
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} D?5W1m]E,s
int a = temp[l]; ?67j+)
int b = temp[r]; |_[mb(<|
for (i = l, j = r, k = l; k <= r; k++) { w6Tb<ja
if (a < b) { ieS5*@^k
data[k] = temp[i++]; q}BQu@'H
a = temp; ~w[zX4@
} else { ^Z:x poz,
data[k] = temp[j--]; ;{Z2i%
b = temp[j]; A7_*zR@
} ,%nmCetD@
} ~P6K)V|@<
} L1C'V/g
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/** ocgbBE
* @param data ~T4=Id
* @param l Z/x<U.B
* @param i *bRH,u
*/ o~>p=5t
private void insertSort(int[] data, int start, int len) { <JH0 &
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "?qu(}|
} FT(EH
} [V jd)%
} y'yaCf
} ha8do^x
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堆排序: J;T_9
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package org.rut.util.algorithm.support; 5K6_#g4"
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import org.rut.util.algorithm.SortUtil; Va*Uwy?x/)
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/** At bqj?
* @author treeroot 4qm5`o\hb
* @since 2006-2-2 eEc;w#
* @version 1.0 p Y>yJ)
*/ Ca1)>1Vz
public class HeapSort implements SortUtil.Sort{ u5CT7_#)
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