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。 %Ht^yemQ
插入排序: ):}Fu
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package org.rut.util.algorithm.support; p[;8
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import org.rut.util.algorithm.SortUtil; T:@7S
/** Bb_}YU2#
* @author treeroot Uk"Y/Ddm
* @since 2006-2-2 6 <r2*`
* @version 1.0 09x+Tko9;*
*/ \v s%U}IrO
public class InsertSort implements SortUtil.Sort{ T"A^[r*
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/* (non-Javadoc) wjg}[R@!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ${0%tCE
*/ y$v@wb5
public void sort(int[] data) { 2:/u2K
int temp; 7Ff?Ysr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oEPNN'~3
} G/%Ubi6%
} B^Bbso'{1
} I-,X wj-
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} [M<{P5q
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冒泡排序: dd19z%
Cl-S=q@>V
package org.rut.util.algorithm.support; tbRE/L<
SDJ;*s-
import org.rut.util.algorithm.SortUtil; eTT^KqE>&
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/** XzN-slu!
* @author treeroot xf[zE Et
* @since 2006-2-2 6HB]T)n
* @version 1.0 A@\qoS[
*/ Bd.Z+#%l"
public class BubbleSort implements SortUtil.Sort{ Yo@m50s$
D'85VZEFyo
/* (non-Javadoc) oFwG+W/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) widI
s[
)
*/ nxf{PbHk
public void sort(int[] data) { ;4R=eI
int temp; A&;EV#]ge
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y]M^n&f
if(data[j] SortUtil.swap(data,j,j-1); ;*"!:GR%h
} ''%;EW>
} *u<rU,C8
} giQ{Xrj
} h<Jc;ht
QId"Cl)3
} $:PF9pY(
%f>X-*}NI-
选择排序: 2z[r@}3
n=;';(wR[
package org.rut.util.algorithm.support; D8q3TyCj%
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import org.rut.util.algorithm.SortUtil; J.*[gt%O|
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/** XX*'N+
* @author treeroot 8H&_, ;
* @since 2006-2-2 Y>(ZsHu
* @version 1.0 mL8A2>Gig
*/ >~.Zr3P6kC
public class SelectionSort implements SortUtil.Sort { ,*q#qW!!
:,urb*
/* :~WPY9i`
* (non-Javadoc) ],H1
* QQ5lW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j{-mQTSD
*/ **Qe`}E:
public void sort(int[] data) { wBg<Q{J
int temp; M-}j9,oR`
for (int i = 0; i < data.length; i++) { (ra:?B
int lowIndex = i; 3"HGEUqA
for (int j = data.length - 1; j > i; j--) { D)f5pEq'
if (data[j] < data[lowIndex]) { MT;SRAmUr
lowIndex = j; 6#OL
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} bnAT,v{
} YJ&lB&xH
SortUtil.swap(data,i,lowIndex); 2]?w~qjWm
} / c4;3>IS
} !G+n"-h9'
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} E1$Hu{
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Shell排序: M"k3zK,
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package org.rut.util.algorithm.support; #
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import org.rut.util.algorithm.SortUtil; Dq0-Kf,^
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/** Pmqx ;
* @author treeroot <`oCz Q1
* @since 2006-2-2 +Q@/F~1@6@
* @version 1.0 EX+={U|ua$
*/ x`};{oz;
public class ShellSort implements SortUtil.Sort{ 'd|Q4RE+W
fcgDU *A%
/* (non-Javadoc) @Fm{6^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i6meY$l
*/ N#<zEAB
public void sort(int[] data) { O;"*_Xq(`
for(int i=data.length/2;i>2;i/=2){ ~rVKQ-+4&
for(int j=0;j insertSort(data,j,i); "N?%mCPI
} # i`A4D
} d,GtH)( s
insertSort(data,0,1); [ u`17hyX
} o2[vM$]
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/** Pg!;o=
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* @param data n"^/UQ|#j
* @param j h,!G7V
* @param i h|(ZXCH
*/ 1YF+(fk
private void insertSort(int[] data, int start, int inc) { ?.rH;:9To
int temp; hQd@bN8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =j'J
!M
} @%I_&!d
} >?\v@
} zIAu3
EI?d(K
} X/-
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快速排序: ,ZzB#\
vp )}/&/
package org.rut.util.algorithm.support; Y|GJph
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import org.rut.util.algorithm.SortUtil; 4~m.#6MT
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/** J1gEjd
* @author treeroot %2rHvF=
* @since 2006-2-2 =sUl`L+w,L
* @version 1.0 /ZIJ<#o[
*/ Q`@$j,v
public class QuickSort implements SortUtil.Sort{ .BYKdxa
d'Ik@D]I
/* (non-Javadoc) Xh7~MU~X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YJ$Vn>6Z
*/ TQOg~lH
public void sort(int[] data) { E1U 4v&P
quickSort(data,0,data.length-1); B"?+5A7
} KG4#BY&^
private void quickSort(int[] data,int i,int j){ CN8@c!mB
int pivotIndex=(i+j)/2; 3$96+A^M *
file://swap )JY_eG&2Dx
SortUtil.swap(data,pivotIndex,j); ^hl]s?"3
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int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); cKi^C
if((k-i)>1) quickSort(data,i,k-1); p ,[XT`q^
if((j-k)>1) quickSort(data,k+1,j); (^s &M
m
p|20`go
} epGX.
/** zDvP7hl
* @param data 7T|J[WO
* @param i N SxPN:
* @param j $tt0D?$4
* @return oqd
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*/ M3jv aI
private int partition(int[] data, int l, int r,int pivot) { E1{:z"
do{ H/p-YtY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &k_wqV
SortUtil.swap(data,l,r); PcNfTB{
} r:WgjjA%
while(l SortUtil.swap(data,l,r); R[>;_}5">
return l; 7q2"b?|h
} {l *&l2
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} :cmI"Bo
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改进后的快速排序: w
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package org.rut.util.algorithm.support; >XXMIz:
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import org.rut.util.algorithm.SortUtil; lEYT{
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/** MWn L#!
* @author treeroot mSk :7ozZ
* @since 2006-2-2 v]`A_)[
* @version 1.0 \: _.N8"
*/ Y#SmZ*zok
public class ImprovedQuickSort implements SortUtil.Sort { 'wB Huq
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private static int MAX_STACK_SIZE=4096; ot>EnHfV
private static int THRESHOLD=10; \yX !P1
/* (non-Javadoc) zI2KIXcc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e>vUkP y
*/ bE`*Uw4
public void sort(int[] data) { XoxR5arj
int[] stack=new int[MAX_STACK_SIZE]; CtC`:!Q
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int top=-1; 4MtqQq4%
int pivot; c~L6fvS
int pivotIndex,l,r; )QSt7g|OF
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stack[++top]=0; Gs=a(0
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stack[++top]=data.length-1; xv#j 593
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while(top>0){ NW4
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int j=stack[top--]; 2YE]?!
int i=stack[top--]; WKrZTPD'm
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pivotIndex=(i+j)/2; Mly z><
pivot=data[pivotIndex]; J?Ep Nie
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SortUtil.swap(data,pivotIndex,j); J6["j
y~A7pzBZ=
file://partition NKUI! [
l=i-1; X+gz+V/
r=j; :5cu,&<Gv
do{ 76i
rb!-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2gD{Fgf@N
SortUtil.swap(data,l,r); xu?QK6D:
} [A..<[
while(l SortUtil.swap(data,l,r); |phWK^
SortUtil.swap(data,l,j); (Y.$wMB
<<2b2?aS`
if((l-i)>THRESHOLD){ {!g.255+
stack[++top]=i; V\M!]Nnxr
stack[++top]=l-1; _g`0td>N
} <9@]|
if((j-l)>THRESHOLD){ ?-F'0-t4%
stack[++top]=l+1; &G,o guo
stack[++top]=j; 4^NHf|UJH
} "0 PN
np\Q&
} tEX~72v
file://new InsertSort().sort(data); j_WF38o
insertSort(data); qM:)daS1w
} mV(x&`Cx
/** :XQ
* @param data 'lRHdD}s
*/ L{0OMyUA
private void insertSort(int[] data) { D_ZBx+/_?
int temp; S,tVOxs^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8m[L]6F(-z
} s=~7m.m
} MJ"Mn^:/
} H6JMN1#t$
KW6" +,Th
} vzm4
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归并排序: 2V"gqJHv
F Hcqu_;J
package org.rut.util.algorithm.support; .x$T al
/~rO2]rZ@
import org.rut.util.algorithm.SortUtil; v8k^=A:
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/** BG8)bhk;/
* @author treeroot 0o=)&%G
* @since 2006-2-2 /bu<,o
* @version 1.0 lg
*/ ^-;Z8M
public class MergeSort implements SortUtil.Sort{ }7z+
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/* (non-Javadoc) z+D,:!yF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5'-9?-S"
*/ I2lZ>3X{
public void sort(int[] data) { P~ZV:Of
int[] temp=new int[data.length]; h%^kA@3F
mergeSort(data,temp,0,data.length-1); Lpbn@y26<
} RMt vEa
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private void mergeSort(int[] data,int[] temp,int l,int r){ Q0; gF?
int mid=(l+r)/2; 4$2T zJE
if(l==r) return ; 99>yaW
mergeSort(data,temp,l,mid); coVT+we
mergeSort(data,temp,mid+1,r); F}.TT=((8
for(int i=l;i<=r;i++){ 2_\|>g|
temp=data; _w/N[E
} `LU,uz
int i1=l; l<:E+lU
int i2=mid+1; !X <n:J
for(int cur=l;cur<=r;cur++){ kpw4Mq@
if(i1==mid+1) <T/L.>p4
data[cur]=temp[i2++]; Kcdd=2 [T
else if(i2>r) 0fK|}mmZA
data[cur]=temp[i1++]; I^Jp
)k*z
else if(temp[i1] data[cur]=temp[i1++]; GXK?7S0H
else &&S4x
data[cur]=temp[i2++]; eRy'N|'
} YY<?w
} ^k<$N
RWQW/Gwx
} =<h=">}5'
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改进后的归并排序: mT~>4xi0
*AQbXw]w
package org.rut.util.algorithm.support; P1 >X5:
W}_}<rlF
import org.rut.util.algorithm.SortUtil; {-`OE
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/** )tch>.EQ_
* @author treeroot i4r~eneP
* @since 2006-2-2 ^JDV4>S\
* @version 1.0 SW'KYzn
*/ <d`UifqD
public class ImprovedMergeSort implements SortUtil.Sort { 6i9I 4*'
7Ej#7\TB]
private static final int THRESHOLD = 10; x2wWp-Z
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/* =xet+;~ji
* (non-Javadoc) Zs|sPatV<
* ,VsCRp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w|o@r%Q#l
*/ QaBXzf
public void sort(int[] data) { XJ?z{gXJ
int[] temp=new int[data.length]; r8>?-P
mergeSort(data,temp,0,data.length-1); '="){
} @}!$NI8
.T-p]9*p
private void mergeSort(int[] data, int[] temp, int l, int r) { GnaVI
int i, j, k; cS7!,XC
int mid = (l + r) / 2; R_&z2I
if (l == r) "a{f?
.X.
return; becQ5w/~
if ((mid - l) >= THRESHOLD) Cjk AQ(9
mergeSort(data, temp, l, mid); rO%+)M$A
else G_mu7w
insertSort(data, l, mid - l + 1); }PL
if ((r - mid) > THRESHOLD) Tic9ri
mergeSort(data, temp, mid + 1, r); 6&0a?Xu
else J vsB^F.4
insertSort(data, mid + 1, r - mid); !|c5@0Wr
2wsZ&y%
for (i = l; i <= mid; i++) { 6Ymk8.PF
temp = data; e'VXyf
} l'\b(3JF
for (j = 1; j <= r - mid; j++) { e"/X*xA
temp[r - j + 1] = data[j + mid]; rep"xV&|>o
} w! 7/;VJ3d
int a = temp[l]; dS=,. }
int b = temp[r]; |c/rHEZ
for (i = l, j = r, k = l; k <= r; k++) { LXV6Ew5E
if (a < b) { =ApT#*D)o
data[k] = temp[i++]; *60)Vo.=
a = temp; y-#tU>P
} else { gNQJ:!
data[k] = temp[j--]; rP4@K%F9jB
b = temp[j]; 9ksrr{tW
} BZshTP[`
} 5xUPqW%3
} y<(.,Nb8
;f~'7RKy!G
/** +]vl8, 4@
* @param data iW~f
* @param l vy?YA-
* @param i e5KF ~0`
*/ Sn&%epi
private void insertSort(int[] data, int start, int len) { ,_zt?o\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Mv=;+?z!
} \s'6)_
} ?0Zw ^a
} _0E,@[
} xII!2.
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堆排序: So`"z[5
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package org.rut.util.algorithm.support; ;A!i V|
*2;3~8Y
import org.rut.util.algorithm.SortUtil; L 3@wdC~0
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/** heA\6W:u&
* @author treeroot jqedHnx
* @since 2006-2-2 a!]%@A6p
* @version 1.0 C\D4C]/8
*/ 0fU>L^P_?
public class HeapSort implements SortUtil.Sort{ blv6
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/* (non-Javadoc) B.#0kjA}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z5A<TC/:
*/ w2[R&hJ
public void sort(int[] data) { .`XA6e(8KR
MaxHeap h=new MaxHeap(); $@;[K\
h.init(data); IRa*}MJe
for(int i=0;i h.remove(); {*9i}w|2
System.arraycopy(h.queue,1,data,0,data.length); yr'`~[oSCy
} D(|$6J 0
5Ncd1
private static class MaxHeap{ iI0 'z=J
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void init(int[] data){ "(qO}&b>
this.queue=new int[data.length+1]; 7F\g3^z9`
for(int i=0;i queue[++size]=data; lc7]=,qyF
fixUp(size); dM$S|,H
} dD%m=x
} 6}$cDk`dz
eSU8/9B
private int size=0; 'P#I<?vB
f?6=H^_>
private int[] queue; bX1ip2X
lk
FC#Qtu~J
public int get() { }I]q$3.
return queue[1]; =fPO0Ot;
} DJ^JUVi
oP6G2@3P/
public void remove() { !k63`(Ti
SortUtil.swap(queue,1,size--); oL;/Qan
fixDown(1); psVRdluS
} cS"6%:hQ
file://fixdown ZHJzh\?
private void fixDown(int k) { , +^db)
int j; x!+a,+G
while ((j = k << 1) <= size) { -j,o:ng0
if (j < size %26amp;%26amp; queue[j] j++; }1wuH
if (queue[k]>queue[j]) file://不用交换 I_rVeMw=
break; Fz% n!d
SortUtil.swap(queue,j,k); _?"J.i
k = j; yrX]w3kr%
} Lsdu:+-
} S EmD's
private void fixUp(int k) { ;o\wSHc
while (k > 1) { bOdD:=f
int j = k >> 1; %O${EN
if (queue[j]>queue[k]) mVLGQlvVK
break; BJ5#!I%h
SortUtil.swap(queue,j,k); #z.x3D@^r6
k = j; ~cjvo?)&e;
} DI\sq8J^
} Fwr,e;Z
;Mz]uk
} 5tL6R3
X)~-MY*p
} iu 'yB
JY,+eD
SortUtil: 4/4IZfznX
{`LV{!
package org.rut.util.algorithm; f8lww)^,v
e+mD$(h
import org.rut.util.algorithm.support.BubbleSort; 809-p_)B
import org.rut.util.algorithm.support.HeapSort; kAoai|m@R
import org.rut.util.algorithm.support.ImprovedMergeSort; !FO)||'[
import org.rut.util.algorithm.support.ImprovedQuickSort; sIpK@BQ'
import org.rut.util.algorithm.support.InsertSort; 3A5" %
import org.rut.util.algorithm.support.MergeSort; ;g9+*$Gw
import org.rut.util.algorithm.support.QuickSort; ;#due
import org.rut.util.algorithm.support.SelectionSort; bQ%^l#H_n'
import org.rut.util.algorithm.support.ShellSort; `W9_LROD
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/**
ulQE{c[
* @author treeroot &V"&