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。 X/2&!O
插入排序: !&/{E
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package org.rut.util.algorithm.support; ,J>5:ht(6
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import org.rut.util.algorithm.SortUtil; .my0|4CQ#@
/** _:C9{aEZb
* @author treeroot DhT>']Z
* @since 2006-2-2 v` 7RCg`
* @version 1.0 ie\"$i.98H
*/ PCM-i{6/
public class InsertSort implements SortUtil.Sort{ Ry K\uv
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/* (non-Javadoc) 4K\(xd&Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]<pjXVRt"
*/ m~u5kbHOi=
public void sort(int[] data) { O#k6' LN?
int temp; S=nzw-(I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MIoEauf
} I`LuRlw
} $!(pF
} Jjv=u
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} H{k^S\K
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冒泡排序: (?{MEwHG
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package org.rut.util.algorithm.support; j|%HIF25
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import org.rut.util.algorithm.SortUtil; 7C ,UDp|
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/** w1#gOwA,$
* @author treeroot ?zVL;gVWA
* @since 2006-2-2 f[~L?B;_L
* @version 1.0 ;)e2@'Agl
*/ D-(w_$#
public class BubbleSort implements SortUtil.Sort{ 3G~@H>j
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/* (non-Javadoc) (%xwl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,%Up0Rr,
*/ g(J&m<I
public void sort(int[] data) { ,@3$X=),E
int temp; [tA;l+Q\&
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^__Dd)(
if(data[j] SortUtil.swap(data,j,j-1); ;R?I4}O#R8
} %V{7DA&C
} uYil ?H{kH
} nwaxz>;
} ]=";IN:SU
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} D]~MC
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选择排序: j;3[KLmuK%
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package org.rut.util.algorithm.support; Yvjc1
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import org.rut.util.algorithm.SortUtil; $.v5~UGb{\
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/** UHxE)]J
* @author treeroot MR<;i2p
* @since 2006-2-2 @kU@N?5e
* @version 1.0 bk^TFE1l
*/ J6G(_(d
public class SelectionSort implements SortUtil.Sort { E7)=`kSl
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/* _b.qkTWUB
* (non-Javadoc) Adgc%
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* H0SQ"?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? Cg>h
*/ pL%r,Y_^\x
public void sort(int[] data) { {=-\|(Bx
int temp;
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for (int i = 0; i < data.length; i++) { G0;XaL:
int lowIndex = i; _}VloiY
for (int j = data.length - 1; j > i; j--) { )V:]g\t
if (data[j] < data[lowIndex]) { pd8Nke
lowIndex = j; 'ao"9-c
} s)2fG\1
} {aC!~qR
SortUtil.swap(data,i,lowIndex); &F5@6nJ`
} Bk\Gj`"7
} z,:a8LB#[
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} -7&Gi
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Shell排序:
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package org.rut.util.algorithm.support; V-r3-b
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import org.rut.util.algorithm.SortUtil; z)=+ F]
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/** F.=Bnw/-
* @author treeroot RxN,^!OV
* @since 2006-2-2 u% n*gcY
* @version 1.0 b-*3 2Y%
*/ ^ Dt#$Z
public class ShellSort implements SortUtil.Sort{ lmSo8/%T
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/* (non-Javadoc) t2iv(swTe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~~,rp) )
*/ yxq}QSb \3
public void sort(int[] data) { `VL}.h
for(int i=data.length/2;i>2;i/=2){ #I3$3^0i#
for(int j=0;j insertSort(data,j,i); S#Sb ]
} MqA`yvQm
} &0 BdUU+:<
insertSort(data,0,1); f5==";eP
} (V% `k'N7f
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/** pdEiqLhH
* @param data _ _>.,gL7
* @param j :4T("a5aM
* @param i gOK\%&S]
*/ [e4]"v`N
private void insertSort(int[] data, int start, int inc) { ?
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int temp; rJInj>|{=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eBO@7F$
} ~E^,=4
} U"4?9.
k
} !'*csg
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} r]Ff{la5
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快速排序: #vqo -y7@
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package org.rut.util.algorithm.support; lM[XS4/TRa
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import org.rut.util.algorithm.SortUtil; q;wLa#4)J
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/** iIGbHn,/
* @author treeroot ~b|`'kU
* @since 2006-2-2 1I}b|6
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* @version 1.0 $CE[MZ&S
*/ `g1iCF
public class QuickSort implements SortUtil.Sort{ Y05P'Q
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/* (non-Javadoc) on7I
l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gxGrspqg
*/ kzS=g|_
public void sort(int[] data) { ^v@4|E$
quickSort(data,0,data.length-1); F("#^$
} [|3>MZ2/
private void quickSort(int[] data,int i,int j){ 92'wkS
int pivotIndex=(i+j)/2; KYxBVgJ
file://swap @i3bgx>_o
SortUtil.swap(data,pivotIndex,j); 9r2IuS0
$.489x+'Z
int k=partition(data,i-1,j,data[j]); xT)psM'CL
SortUtil.swap(data,k,j); .\qj;20W
if((k-i)>1) quickSort(data,i,k-1); X}6#II
if((j-k)>1) quickSort(data,k+1,j); *$M'`vj:
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} Sj(F3wY
/** STA4 p6
* @param data ='E$-_
* @param i oQj=;[
* @param j Ij'NC C
* @return 47T}0q,
*/ g+C!kaC)
private int partition(int[] data, int l, int r,int pivot) { p=QYc)3F
do{ <vbIp&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %AnW~v
SortUtil.swap(data,l,r); l~Lb!; ,dN
} )2E%b+"
while(l SortUtil.swap(data,l,r); ^5 t
return l; b( ^^m:(w
} swc@34ei\
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} te4= S
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改进后的快速排序: AP\ofLmq
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package org.rut.util.algorithm.support; Us~ X9n_F
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import org.rut.util.algorithm.SortUtil; lKEa)KF[
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/** kDz>r#%
* @author treeroot wn11\j&
* @since 2006-2-2 [W,-1.$!dM
* @version 1.0 n|4;Hn1V
*/ hD<f3_k
public class ImprovedQuickSort implements SortUtil.Sort { XL}<1-}
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private static int MAX_STACK_SIZE=4096; [&P`ak
private static int THRESHOLD=10; Ld|V^9h1;
/* (non-Javadoc) ~L+]n0*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Dx#7bsDZR
*/ |@o6NZ<9N
public void sort(int[] data) { xkA2g[
int[] stack=new int[MAX_STACK_SIZE]; .]}N55M
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int top=-1; - &[z\"T
int pivot; K.SeK3(
int pivotIndex,l,r; y^FOsr
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stack[++top]=0; 8Vt4HD 08
stack[++top]=data.length-1; qSO*$1i
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while(top>0){ ,dd WBwMK
int j=stack[top--]; aN^IP
int i=stack[top--]; hGP1(pH.
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pivotIndex=(i+j)/2; twk&-:'
pivot=data[pivotIndex]; %>XN%t'6aT
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SortUtil.swap(data,pivotIndex,j); (3EUy"z-
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file://partition :nQp.N*p
l=i-1; RFG$X-.e
r=j; w&lZ42(mF
do{ 5su.+4z\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f(u&XuZ
SortUtil.swap(data,l,r); ]RFdLV?
} g<[rH%\6fg
while(l SortUtil.swap(data,l,r); E:VGji7s
SortUtil.swap(data,l,j); T 0 FZ7
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if((l-i)>THRESHOLD){ (buw^
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stack[++top]=i; < `Z%O<X
stack[++top]=l-1; cINHH !v
} H|+tC=]4IZ
if((j-l)>THRESHOLD){ 5iWe-xQ>
stack[++top]=l+1; {:Vf0Mhb
stack[++top]=j; TvrwVL)
} Gidkt;lj
f:%SW
} mpef]9
file://new InsertSort().sort(data); T#iU+)-\%
insertSort(data); GFR!n1Hv
} u;n(+8sz
/** 1| xN%27>
* @param data |ft:|/^F&
*/ _@ i>s,
private void insertSort(int[] data) { AQci,j"
int temp; $ly0h W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }~*rx7p
} lvufk VG|
} XN;/nU
} pVOI5>f\
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} ,ZK]i CGk
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归并排序: YhgUCF#
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package org.rut.util.algorithm.support; z`'P>.x
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import org.rut.util.algorithm.SortUtil; s -Y +x
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/** MCAXt1sL&E
* @author treeroot Wg1tip8s
* @since 2006-2-2 ${e&A^h
* @version 1.0
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*/ #K`B<2+T
public class MergeSort implements SortUtil.Sort{ Bz]J=g7
$GF&x>]]
/* (non-Javadoc) HIPL!ss]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kGD|c=K}
*/ mG}k 3e-
public void sort(int[] data) { U,3d) ]Zy&
int[] temp=new int[data.length]; .S|-4}G(6
mergeSort(data,temp,0,data.length-1); 3LrsWAz'
} j_pw^I$C
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private void mergeSort(int[] data,int[] temp,int l,int r){ WLy7'3@
int mid=(l+r)/2; B,0+HoP
if(l==r) return ; .cw=*<zeg
mergeSort(data,temp,l,mid); |Q u_E
mergeSort(data,temp,mid+1,r); ` Xqy
for(int i=l;i<=r;i++){ @}G|R\2P
temp=data; 6 ">oo-
} fMB4xbpD
int i1=l; 6bJ"$ o
int i2=mid+1; O<a3DyUa;
for(int cur=l;cur<=r;cur++){ m~Me^yt>}
if(i1==mid+1) nh|EZp]
data[cur]=temp[i2++]; Spc&X72I
else if(i2>r) W]~ZkQ|P
data[cur]=temp[i1++]; 2;R/.xI6v
else if(temp[i1] data[cur]=temp[i1++]; W^ClHQ"Iy
else `1_FQnm)
data[cur]=temp[i2++]; *(VbPp_H_
} ^8\Y`Z0%
} DJJZJ}7
h*waRD
} *cy.*@d
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改进后的归并排序: ws().IZ
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package org.rut.util.algorithm.support; G,/Gq+WX
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import org.rut.util.algorithm.SortUtil; q"p#H 8
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/** 1G_xP^H!
* @author treeroot a}GAB@YI
* @since 2006-2-2 Vd[2u
* @version 1.0 ;y,NC2Xj
*/ <mn-=#)
public class ImprovedMergeSort implements SortUtil.Sort { &X7ttB"#h
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private static final int THRESHOLD = 10; t*rp3BIG
EUXV/QV{
/* iGyVG41U
* (non-Javadoc) 4Q/r[x/&C
* A<;0L . J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I &cX8Tw
*/ C*]AL/
public void sort(int[] data) { n\
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int[] temp=new int[data.length]; eFes+i( 35
mergeSort(data,temp,0,data.length-1); 5GUH;o1m
} wz)m{:b<
}RH lYN
private void mergeSort(int[] data, int[] temp, int l, int r) { hX %s]"
int i, j, k; TR|;,A[%v#
int mid = (l + r) / 2; ZG!x$yi$
if (l == r) R$v i!0
return; _=)!xnYf
if ((mid - l) >= THRESHOLD) ;,FT&|3o
mergeSort(data, temp, l, mid); O<Jwaap
else B_b8r7Vn`
insertSort(data, l, mid - l + 1); d[yrNB6|
if ((r - mid) > THRESHOLD) r \9:<i8
mergeSort(data, temp, mid + 1, r); 2;O c^
else T?ZOHH8
insertSort(data, mid + 1, r - mid); %pd5w~VP
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for (i = l; i <= mid; i++) { 0\QYf0o
temp = data; IZ|c<#r6
} dV$3u"9
for (j = 1; j <= r - mid; j++) { "C?:T'dW
temp[r - j + 1] = data[j + mid]; rkbl/py
} 5~*=#v:`
int a = temp[l]; x ru(Le}E
int b = temp[r]; F: f2s:<
for (i = l, j = r, k = l; k <= r; k++) { ?UU5hek+m
if (a < b) { {kT#o3,>w6
data[k] = temp[i++]; pFS
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a = temp; $/MY,:*e
} else { T27:"LVw
data[k] = temp[j--]; K@y-)I2]
b = temp[j]; J,MT^ B
} gjO
*h3`
} (tgEa{rPAP
} WvIK=fdZ$
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/** cvn-*Sj
* @param data s_x=^S3~LO
* @param l Cb+P7[X-
* @param i `6dy
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*/ #!(Zn:[
private void insertSort(int[] data, int start, int len) { A!n~8zcmp}
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X9p+a,
} aA7S'[NjB
} Yjpb+}
} ;|2Uf
} S6=\r{V
27}.s0{D
堆排序: 4u7c7K>\Y
m>g}IX&K'
package org.rut.util.algorithm.support; o:p{^D@#k
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import org.rut.util.algorithm.SortUtil; tzx:*
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/** +>n.T
* @author treeroot hB?U5J
* @since 2006-2-2 wn&[1gBxM
* @version 1.0 DX]z=d)tc
*/ 4da^d9ZOy
public class HeapSort implements SortUtil.Sort{ cYBrRTrI#
4Sd+"3M
/* (non-Javadoc) 1Kp?bwh"u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0V{>)w!Fo
*/ $%lHj+(
public void sort(int[] data) { g{rt ^B
MaxHeap h=new MaxHeap(); lr)G:I#|
h.init(data); $IZ*|>(
for(int i=0;i h.remove(); s0x@
u
System.arraycopy(h.queue,1,data,0,data.length); qpH j4
} /&y,vkZTT
@^w!% ?J
private static class MaxHeap{ ][s*~VK;
>b[4
void init(int[] data){ !pE>O-| K
this.queue=new int[data.length+1]; q8&4=eV\A
for(int i=0;i queue[++size]=data; H620vlC}V
fixUp(size); D/+@d:- G
} T\<M?`Y
} PX+"" #
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private int size=0; NZC<m$')
U"jUMOMZ;
private int[] queue; <m|FccvQ
s>[vT?
public int get() { >KH(nc$
return queue[1]; [ni-UNTv
} @y&h4^)z
q[T_*X3o
public void remove() { EbHUGCMO
SortUtil.swap(queue,1,size--); 7`j|tb-
fixDown(1); O&gy(
} )wyu+_:
file://fixdown N^@%qUvT]
private void fixDown(int k) { ur,V>J<5A
int j; gK] T}
while ((j = k << 1) <= size) { bCe[nmE2
if (j < size %26amp;%26amp; queue[j] j++; oW\Q>c7
=
if (queue[k]>queue[j]) file://不用交换 rzc 3k~@
break; fb;hf:B:
SortUtil.swap(queue,j,k); U O{xpY
k = j; d1C/u@8^
} )%-\hl]
} 4cv|ok8P
private void fixUp(int k) { ]lG_rGw
while (k > 1) { E!O(:/*
int j = k >> 1; kiBOyC!r6
if (queue[j]>queue[k]) r' 97\|
break; r(`8A:#d
SortUtil.swap(queue,j,k); jHUz`.8B
k = j; g/J^K*3]
} <3J=;.\6
} d-_93
kG~ivB}x
} "X!_37kQ
-&HoR!af
} [{Klv&>_/
o9(#KC?3
SortUtil: 8tB{rK,
NR@SDW
package org.rut.util.algorithm; Xj(k(>7V
LT
y@6*
import org.rut.util.algorithm.support.BubbleSort; [jG uO%
import org.rut.util.algorithm.support.HeapSort; P89Dg/P
import org.rut.util.algorithm.support.ImprovedMergeSort; b_"V%<I
import org.rut.util.algorithm.support.ImprovedQuickSort; |<5J
import org.rut.util.algorithm.support.InsertSort; ~T{d9yNW1
import org.rut.util.algorithm.support.MergeSort; UVvt&=+4
import org.rut.util.algorithm.support.QuickSort; _s=Pk[e
import org.rut.util.algorithm.support.SelectionSort; 1&x0+~G
import org.rut.util.algorithm.support.ShellSort; %'p|JS
Sd/d [
/** LqH?3):
* @author treeroot &nY2u-Q
* @since 2006-2-2 GO&R