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。 <Peebv&v
插入排序: =,!\~`^
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package org.rut.util.algorithm.support; RR;AJ8wd
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import org.rut.util.algorithm.SortUtil; nz1'? _5
/** XZNY4/25G
* @author treeroot yqXH:757~
* @since 2006-2-2 \'CN
* @version 1.0 )py{\r9X
*/ [L$9p@I
public class InsertSort implements SortUtil.Sort{ h4pTq[4*
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/* (non-Javadoc) $/1c= Y@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RE$`YCs5
*/ . v@>JZC
public void sort(int[] data) { )\;Z4x;]U
int temp; ZPN
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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); i|)Su4Dw
} y;?ie]3G
} fEE
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} 7r+g8+4
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} <mMTD8Sx]
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冒泡排序: `cQo0{xK
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package org.rut.util.algorithm.support; kU-t7'?4
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import org.rut.util.algorithm.SortUtil; raVA?|'g~
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/** 9~rUkHD
* @author treeroot ZD#9&q'4<
* @since 2006-2-2 \AUI|M;'
* @version 1.0 Z}A%=Z\/3
*/ >>Ts??
public class BubbleSort implements SortUtil.Sort{ I]"96'|N
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/* (non-Javadoc) CBQhIvq.d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ik|-L8
*/ g[>\4B9t
public void sort(int[] data) { Uawpfgc}
int temp; "N:XzG
for(int i=0;i for(int j=data.length-1;j>i;j--){ _sE#)@p
if(data[j] SortUtil.swap(data,j,j-1); :!;'J/B@..
} . #Z+Z
} R:JX<Ba
} X0;4_,=
} qa(>wR"mT
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} I-]>d;4.
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选择排序: SjjIr ^
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package org.rut.util.algorithm.support; ]{
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import org.rut.util.algorithm.SortUtil; {*ZY(6^
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/** aKUS5jDu
* @author treeroot \?j E#^
* @since 2006-2-2 XS0xLt=
* @version 1.0 w:Jrmx
*/ X.K<4N0A9J
public class SelectionSort implements SortUtil.Sort { 9jp:k><\(c
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/* E+"dqSI/v
* (non-Javadoc) *?+V65~dW
* Giq=*D+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B()/.w?A
*/ fW`&'!
public void sort(int[] data) { kY,U8a3!
int temp; 1C Pjil*eb
for (int i = 0; i < data.length; i++) { .,~(%#Wl$
int lowIndex = i; A`}yBSb
for (int j = data.length - 1; j > i; j--) { 3Y)PU=
if (data[j] < data[lowIndex]) { S0g'r
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lowIndex = j; @ DZD
} =z{JgD/
} +5.t. d
SortUtil.swap(data,i,lowIndex); :0K8h
} E|YdcS
} bsxTqJ
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} )5%C3/Dl!
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Shell排序: 4`Nt{
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package org.rut.util.algorithm.support; ;TcvA
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import org.rut.util.algorithm.SortUtil; v{i7h|e
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/** 2M)]!lYy
* @author treeroot b,P ]9$Ut
* @since 2006-2-2 S1 _6C:^k
* @version 1.0 qj01]
*/ '`Bm'Dd
public class ShellSort implements SortUtil.Sort{ ky>wOaTmN6
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/* (non-Javadoc) ,U *)2`[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4>^K:/y
*/ ?Y:x[pOe
public void sort(int[] data) { ;)Kh;;e
for(int i=data.length/2;i>2;i/=2){ vN4Qdpdb
for(int j=0;j insertSort(data,j,i); e&ANp0|W
} H7+Xs%
} (F7_S*
insertSort(data,0,1); 5_0(D;Q
} @ZN^1?][
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/** eMOD;{Q?X
* @param data TGuiNobD
* @param j e@@?AB$n(
* @param i ,=(Z00#(
*/ nI*/Mhx
private void insertSort(int[] data, int start, int inc) { Q@e[5RA+]
int temp; >$gG/WD?KR
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c4e_6=Iv
} sDgXU@
} WqxUX H
} *BD=O@
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} h@7FY
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快速排序: K.C>
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package org.rut.util.algorithm.support; 0s#vwK13
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import org.rut.util.algorithm.SortUtil; X u"R^
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/** Q|}aR:4
* @author treeroot 53 QfTP
* @since 2006-2-2 {^{p,9
* @version 1.0 QQk{\PV
*/ eLwTaW !C
public class QuickSort implements SortUtil.Sort{ QU{Ech'
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/* (non-Javadoc) 71#I5*8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -]Cc
*/ gw+9x<e
public void sort(int[] data) { xy+QbDT
quickSort(data,0,data.length-1); "O+5R(XT
} v]2S`ffP
private void quickSort(int[] data,int i,int j){ HQ9f ,<
int pivotIndex=(i+j)/2; F Kc;W
file://swap #5sD{:f`
SortUtil.swap(data,pivotIndex,j); [~W`E1,
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int k=partition(data,i-1,j,data[j]); f0+2t.tj
SortUtil.swap(data,k,j); A]`El8_t"
if((k-i)>1) quickSort(data,i,k-1); {P8[X@Lu
if((j-k)>1) quickSort(data,k+1,j); n<Svwa}
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} I~PDaZP
/** {"*VU3%q
* @param data C8@TZ[w
* @param i u{&B^s)k.
* @param j =9L$L|W
* @return {-9jm%N
*/ iK;dU2h
private int partition(int[] data, int l, int r,int pivot) { Y**|N8e
do{ QH4wUU3X
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a\kb^D=T
SortUtil.swap(data,l,r); w&Dv8Wv+Oq
} v/uO&iQw5
while(l SortUtil.swap(data,l,r); ->-*]-fv[L
return l; `Yc_5&"
} YF#HSf7
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} ci,+Bjc
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改进后的快速排序: 0uVv<Q~
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package org.rut.util.algorithm.support; qv
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import org.rut.util.algorithm.SortUtil; ,F+B Wot4
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/** <j}lp-
* @author treeroot 0?7XtC P<
* @since 2006-2-2 F9c`({6k
* @version 1.0 RnVtZ#SCh
*/ PDx)S7+w[
public class ImprovedQuickSort implements SortUtil.Sort { z
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private static int MAX_STACK_SIZE=4096; 9z
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private static int THRESHOLD=10; [{[N( g&d
/* (non-Javadoc) Qz<d~N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iWX c
*/ -y) ,Y
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public void sort(int[] data) { l2v_?j-)x
int[] stack=new int[MAX_STACK_SIZE]; {TSY|D2
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int top=-1; Hyk'c't_O
int pivot; 5G}6;U Y
int pivotIndex,l,r; >Dm8m[76
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stack[++top]=0; 3K/Df#
stack[++top]=data.length-1; WiNT;v[
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while(top>0){ B,$l4m4
int j=stack[top--]; &znH!AQ0
int i=stack[top--]; <>SdVif]
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pivotIndex=(i+j)/2; O[~x_xeW
pivot=data[pivotIndex]; S{F-ttS"
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SortUtil.swap(data,pivotIndex,j); xc
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file://partition @
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l=i-1; AH7L.L+$M
r=j; .;/L2Jv
do{ db=$zIB[:
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qG8s;_G
SortUtil.swap(data,l,r); qX:B4,|ck
} ,1n
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while(l SortUtil.swap(data,l,r); !jX4`/n2
SortUtil.swap(data,l,j); 2f, B$-#
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if((l-i)>THRESHOLD){ 4k}e28
stack[++top]=i; MlO-+}`_+
stack[++top]=l-1; 4|J[Jdj
} @B1{r|-<^
if((j-l)>THRESHOLD){ SDJH;c0
stack[++top]=l+1; Pd=,$UQp
stack[++top]=j; s}x>J8hK
} l4'~}nn(Y
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} f*((;*n;
file://new InsertSort().sort(data); q1Qje%9@t
insertSort(data); S*W;%J5
} +}7fg82)
/** n"{X!(RIcx
* @param data dZ2%S''\
*/ 7 &)])
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private void insertSort(int[] data) { vL_zvXA
int temp; M.%shrJ/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #mc!Wt10
} %n$^-Vc&
} kN9yO5h7
} ,krS-.
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} Dk)}|GJ()"
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归并排序: uZjI?Z.A
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package org.rut.util.algorithm.support; MOz}Q1`a
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import org.rut.util.algorithm.SortUtil; W*T{,M@Y
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/** 9w~cvlv[
* @author treeroot I=dGq;Jaz
* @since 2006-2-2 D!>
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* @version 1.0 6XUuGxQV/
*/ V%
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public class MergeSort implements SortUtil.Sort{ +H'\3^C-
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/* (non-Javadoc) WO</Q6+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2wpjU&8W!
*/ W? ,$!]0
public void sort(int[] data) { W|c.l{A5Q
int[] temp=new int[data.length]; ksI>IW
mergeSort(data,temp,0,data.length-1); #!#z5DJu
} |"k&fkS$
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private void mergeSort(int[] data,int[] temp,int l,int r){ x!{
int mid=(l+r)/2; 0Oxz3r%}r
if(l==r) return ; CmC0k-%w
mergeSort(data,temp,l,mid); b](o]O{v
mergeSort(data,temp,mid+1,r); D!FaE N
for(int i=l;i<=r;i++){ 4,1oU|fz
temp=data; O]=C#E{
} ?C;JJ#Ho
int i1=l; r'aY2n^O
int i2=mid+1; w+UV"\!G)Q
for(int cur=l;cur<=r;cur++){
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if(i1==mid+1) 3B9nP._
data[cur]=temp[i2++]; YB!!/ SX4
else if(i2>r) E&2tBrAq
data[cur]=temp[i1++]; 3]}'TA`v
else if(temp[i1] data[cur]=temp[i1++]; L7q | ^`
else }5gr5g\OtP
data[cur]=temp[i2++]; v[#)GB
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} cdp0!W4Gi
} T0|H9>M
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} P#tvm,
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改进后的归并排序: "DckwtG:%
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package org.rut.util.algorithm.support; %?tq;~|]Q
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import org.rut.util.algorithm.SortUtil; TbNGgjT
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/** lizTRVBE
* @author treeroot Fj=NiZ=
* @since 2006-2-2 0'yyfz
* @version 1.0 DX@}!6|T
*/ FBYODw
public class ImprovedMergeSort implements SortUtil.Sort { km>o7V&4G
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private static final int THRESHOLD = 10; nR'#s%Kj
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/* -V=arm\#z
* (non-Javadoc) <5ZJ]W
* c4|so=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :XS"#^aJ
*/ Dd/}Ya(Gi
public void sort(int[] data) { \Hum }0[
int[] temp=new int[data.length]; rSyaZ6#
mergeSort(data,temp,0,data.length-1); 0j@Ix EPs
} lgT?{,>RkW
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private void mergeSort(int[] data, int[] temp, int l, int r) { 8XbR
int i, j, k; 2LhE]O(_"
int mid = (l + r) / 2; 878tI3-
if (l == r) E~He~wHWe
return; {wu!6\:<??
if ((mid - l) >= THRESHOLD) 37>MJ
mergeSort(data, temp, l, mid); H1Xov r
else wo(j}O-
insertSort(data, l, mid - l + 1); +89o`u_l%
if ((r - mid) > THRESHOLD) N1?
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mergeSort(data, temp, mid + 1, r); C4_t_N
else bj.]o*u-
insertSort(data, mid + 1, r - mid); \{>eOD_
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for (i = l; i <= mid; i++) { oNSz&