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。 +'{d^-( (
插入排序: v\dP
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package org.rut.util.algorithm.support; |vtj0,[
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import org.rut.util.algorithm.SortUtil; $[V-M\q
/** 2Z+:^5
* @author treeroot *9tRhRc
* @since 2006-2-2 _&e$?hY
* @version 1.0 7'.]fs:
*/ ^NXxMC(e+
public class InsertSort implements SortUtil.Sort{ ]h%~'8g,
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/* (non-Javadoc) ]XEUD1N;I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kp>fOe'KW
*/ =[LUOOR*]
public void sort(int[] data) { 8 `}I]
int temp; Ru@ { b`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mr>dZ)
} ffR<G&"n~b
} z!aU85y
} nrKir
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冒泡排序: %+@<T<>J<k
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package org.rut.util.algorithm.support; 6cXZ3;a
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import org.rut.util.algorithm.SortUtil; Ou{VDE
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/** / "@cv{
* @author treeroot -{ES 36
* @since 2006-2-2 2]cU:j6G
* @version 1.0 @ \*Zq
*/ I lZ$Jd
public class BubbleSort implements SortUtil.Sort{ YI?tmqzt
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/* (non-Javadoc) "'~&D/7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [:8+ +#KD
*/ ),XDY_9K
public void sort(int[] data) { uZa)N-=b2
int temp; ht2J, 1t
for(int i=0;i for(int j=data.length-1;j>i;j--){ }aL&3[>>
if(data[j] SortUtil.swap(data,j,j-1); 0t%`jY~%
} upiYo(sN.
} 7M<co,"
} C(n_*8{
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} <xUX&J=;
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选择排序: L[tq@[(IJ
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package org.rut.util.algorithm.support; APyH.] mQ
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import org.rut.util.algorithm.SortUtil; Y%^qt]u.8
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/** R|[gEavFl
* @author treeroot gP`CQ0t
* @since 2006-2-2 d "25e"(~F
* @version 1.0 S5[}kfe
*/ ufJHC06
public class SelectionSort implements SortUtil.Sort { V^< Zs//7
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/* yM*_"z!L
* (non-Javadoc) Rbcu5.6
* Jk57| )/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T@d4NF#
*/ O@a7MzJ
public void sort(int[] data) { O+t'E9Fa
int temp; lsU`~3nr
for (int i = 0; i < data.length; i++) { { a_&L
int lowIndex = i; i93^E~q]
for (int j = data.length - 1; j > i; j--) { |eqp3@Y1E
if (data[j] < data[lowIndex]) { hVh,\d&2t
lowIndex = j; krRnE7\m
} , 8o
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} IU\h,Ug
SortUtil.swap(data,i,lowIndex); 5%w08
} \S>GtlQbn
} d$y?py
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} 4P?@NJp
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Shell排序: HqXS-TG
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package org.rut.util.algorithm.support; _Zus4&'
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import org.rut.util.algorithm.SortUtil; T!-ly7-`
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/** >3&9Wbv>
* @author treeroot f1
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* @since 2006-2-2 JG@Zb}b
* @version 1.0 xn anca
*/ ?N&s.
public class ShellSort implements SortUtil.Sort{ [`'K.-?#
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/* (non-Javadoc) cG{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tNljv >vI
*/ aVp-Ps|r
public void sort(int[] data) { ZUS06#t}
for(int i=data.length/2;i>2;i/=2){ m}'!W`<
for(int j=0;j insertSort(data,j,i); + aWcK6
} [0lO0ik>G
} .:=5|0m
insertSort(data,0,1); TP mb]j
} 3g5D[>J'
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/** sLf~o"yb
* @param data 5YLc4z*
* @param j qfF2S
* @param i lqvP
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*/ [<X ~m
private void insertSort(int[] data, int start, int inc) { s?PB ]Tr
int temp; =z\/xzAwX
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B^C5?
} mt4X
} 5:%`&B\
} 4c<\_\\ck
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} T1;>qgp4b
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快速排序: 9]:F!d/
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package org.rut.util.algorithm.support; yh{U!hG
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import org.rut.util.algorithm.SortUtil; <t dsUh:?&
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/** ;WG%)^e
* @author treeroot Rg3g:TV9c
* @since 2006-2-2 ynJ)6n7a
* @version 1.0 MJU*Sq
*/ 68~5Dx
public class QuickSort implements SortUtil.Sort{ Zi<(>@z2
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/* (non-Javadoc) U5[r&Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) py6O\` \
*/ gps.
public void sort(int[] data) { }>_
quickSort(data,0,data.length-1); l7U<]i GL
} ps33&
private void quickSort(int[] data,int i,int j){ x^McUfdr|
int pivotIndex=(i+j)/2; ol}}c6
file://swap zIr4!|X
SortUtil.swap(data,pivotIndex,j); G6s3\de#U
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int k=partition(data,i-1,j,data[j]); h;A~:}c,
SortUtil.swap(data,k,j); kb!W|l"PN
if((k-i)>1) quickSort(data,i,k-1); E5Lq-
if((j-k)>1) quickSort(data,k+1,j); er<_;"`1
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} A-u!{F
/** XpPcQIM*
* @param data n(_wt##wE~
* @param i Z8Tb43?
* @param j N!<X%Ym
* @return ,nJCqX~/G
*/ {"O-/*
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private int partition(int[] data, int l, int r,int pivot) { /sSM<r]5j
do{ @eYD@!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f6m
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SortUtil.swap(data,l,r); G<Urj+3/Xo
} 3&R1C>JS ]
while(l SortUtil.swap(data,l,r); fONycXM]
return l; f7Gs1{
} 57EL&V%j
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} uM9Gj@_
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改进后的快速排序: /as+ TU`A
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package org.rut.util.algorithm.support; )"%J~:`h}
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import org.rut.util.algorithm.SortUtil; dJ~Occ 1~r
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/** 10_>EY`
* @author treeroot sTvw@o*
* @since 2006-2-2 uEkGo5
* @version 1.0 f||S?ns_
*/ W>u{JgY
public class ImprovedQuickSort implements SortUtil.Sort { sHQO*[[
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private static int MAX_STACK_SIZE=4096; J\Tu=f)
private static int THRESHOLD=10; vnqLcNB H
/* (non-Javadoc) 3bHB$n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4}0Ry\
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*/ %0vWyU:K9
public void sort(int[] data) { ~SI G0U8
int[] stack=new int[MAX_STACK_SIZE]; r+tHVh
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int top=-1; azG"Mt|7Z
int pivot; g|j15&x
int pivotIndex,l,r; /&l4 sF1
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stack[++top]=0; .]N`]3$=
stack[++top]=data.length-1; "O_)~u
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while(top>0){ 3~Ll<8fv
int j=stack[top--]; \T?6TDZ]
int i=stack[top--]; l!:L<B
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pivotIndex=(i+j)/2; ED>P>Gg
pivot=data[pivotIndex]; 'Jd*r(2d
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SortUtil.swap(data,pivotIndex,j); .u]d5z
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file://partition u R]8ZT")
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r=j; T>,[V:
do{ S$46YQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PgsG*5WQ
SortUtil.swap(data,l,r); ^JGwCHeb|H
} H!|g?"C
while(l SortUtil.swap(data,l,r); aJ[|80U
SortUtil.swap(data,l,j); KfQ?b_H.
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if((l-i)>THRESHOLD){ 4jzjrG
stack[++top]=i; 77'@U(
stack[++top]=l-1; BW ux!
} w17CZa
6
if((j-l)>THRESHOLD){ {
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stack[++top]=l+1; N(P2Lo{JF
stack[++top]=j; [MF&x9Ss?%
} >[Tt'.S!?
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} wM}AWmH
file://new InsertSort().sort(data); gP>W* ]0r1
insertSort(data); lBudC
} z6|kEc"{
/** YUTI)&y
* @param data +K,T^<F;
*/ 7tne/Yz
private void insertSort(int[] data) { w"L]?#
int temp; #X0Xc2}{f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _/YM@%d
} u1>WG?/`
} b&'YW*W
} ~.z82m
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} fr}.#~{5Y
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归并排序: t+M'05-U2
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package org.rut.util.algorithm.support; QY*F(S,\
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import org.rut.util.algorithm.SortUtil; QQD7NN>
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/** 0n\AUgVPF
* @author treeroot ZuKOscVS#T
* @since 2006-2-2 "`h.8=-
* @version 1.0 COj^pdE3
*/ ;WgzR_'!'
public class MergeSort implements SortUtil.Sort{ ,[3}t%Da
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/* (non-Javadoc) PJ,G_+b!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (-VH=,Md
*/ f`8?]@y{
public void sort(int[] data) { B;nIKZ
int[] temp=new int[data.length]; B7sBO6Z$J
mergeSort(data,temp,0,data.length-1); V;gC[7H
} L1&` 3a?pL
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private void mergeSort(int[] data,int[] temp,int l,int r){ ^ Z3y
int mid=(l+r)/2; &PX!'%X68h
if(l==r) return ; .pH 4[~
mergeSort(data,temp,l,mid); /?a9g>G%N
mergeSort(data,temp,mid+1,r); aO2zD<d
for(int i=l;i<=r;i++){ )k]{FM
temp=data; ]ZH6
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} =L`PP>"rW
int i1=l; 5UX- Qqr
int i2=mid+1; Tq?f5swsI
for(int cur=l;cur<=r;cur++){ W{1l?Wo
if(i1==mid+1) 7|
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data[cur]=temp[i2++]; + -rSO"nc
else if(i2>r) IsjN
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data[cur]=temp[i1++];
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else if(temp[i1] data[cur]=temp[i1++]; cfy9wD
else (%G>TV
data[cur]=temp[i2++]; _qH]OSo
} @c}Gw;e
} 0^6}s1d_
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} #c9MVQ_
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改进后的归并排序: 65tsJ"a<
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package org.rut.util.algorithm.support; Ex6Kxd}8
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import org.rut.util.algorithm.SortUtil; <3Rq!w/
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/** ]deO\mB
* @author treeroot OaY]}4tI$
* @since 2006-2-2 3h6,x0AG
* @version 1.0 Jg$ NYs.xZ
*/ TN/&^/
public class ImprovedMergeSort implements SortUtil.Sort { /K;A bE
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private static final int THRESHOLD = 10; ony;U#^T
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/* WGo ryvEx
* (non-Javadoc) ?P}) Qa
* X>Z83qV5d!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I*pFX0+
*/ Z/:W.*u
public void sort(int[] data) { ?.ofs}
int[] temp=new int[data.length]; ;zSV~G6-
mergeSort(data,temp,0,data.length-1); ebLt:gGo
} waG &3m
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private void mergeSort(int[] data, int[] temp, int l, int r) { VeH%E.:
int i, j, k; yr)e."#S
int mid = (l + r) / 2; '=d y
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if (l == r) P<9T.l
return; a, `B.I
if ((mid - l) >= THRESHOLD) RK_z!%(P
mergeSort(data, temp, l, mid); -$kbj*b##
else 9h<iw\$'
insertSort(data, l, mid - l + 1); iztgk/(+G
if ((r - mid) > THRESHOLD) !Wy&+H*0
mergeSort(data, temp, mid + 1, r); >n1UK5QD
else |=W>4>
insertSort(data, mid + 1, r - mid); [P]M)vJ**
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for (i = l; i <= mid; i++) { &m{~4]qWpM
temp = data; #XNURj
} "*KOU2}C
for (j = 1; j <= r - mid; j++) { knWI7
temp[r - j + 1] = data[j + mid]; i6i;{\tc
}
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int a = temp[l]; v'Up& /(
int b = temp[r]; z[JM ]Wy
for (i = l, j = r, k = l; k <= r; k++) { }(WUZ^L
if (a < b) { 5UQ[vHMqI
data[k] = temp[i++]; OQDx82E
a = temp; fL gHQ
} else { .SBN^fq
data[k] = temp[j--]; dhuIVBp!!e
b = temp[j]; uuy0fQQ8ti
} - @KT#
} j92+kq>Xd
} wD@ wOC
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