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。 Ja"?Pb
插入排序: l|j
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package org.rut.util.algorithm.support; WBK6Ug
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import org.rut.util.algorithm.SortUtil; ))66_bech
/** whxTCI V
* @author treeroot .J"QW~g^
* @since 2006-2-2 Uc^e Ia@
* @version 1.0 )%dxfwd6
*/ j
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public class InsertSort implements SortUtil.Sort{ x8
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/* (non-Javadoc) ose(#n4 0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nm Y_ )s
*/ nl5A{ s
public void sort(int[] data) { #oW"3L{,
int temp; < KGq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -n FKP&P
} 9kHVWDf
} vJ9I z
} ^m~&2l\N=
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} ,sI<AFI
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冒泡排序: WX6}@mS.
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package org.rut.util.algorithm.support; Xdh2
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import org.rut.util.algorithm.SortUtil; hz:h>Hwy
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/** =HMa<"-8
* @author treeroot M#nlKj<
* @since 2006-2-2 *,& 2?E8
* @version 1.0 J/LsL
k
*/ R!f<6l8#W
public class BubbleSort implements SortUtil.Sort{ txE=AOY5
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/* (non-Javadoc) :^7>kJ5?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ttOk6-
*/ G?kK:eV
public void sort(int[] data) { =' uePM")
int temp; 7-:R{&3Lm:
for(int i=0;i for(int j=data.length-1;j>i;j--){ .V4-
if(data[j] SortUtil.swap(data,j,j-1); (Zg'])
} 50_[n$tqE
} plL|Ubn
}
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} NNt
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} &S,_Z/BS;
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选择排序: vjjVZ
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package org.rut.util.algorithm.support; TZ *>MySiF
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import org.rut.util.algorithm.SortUtil; :*f 2Bn
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/** hw$!LTB2
* @author treeroot u
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* @since 2006-2-2 b9-IrR4h
* @version 1.0 nr2 Q[9~
*/ _Jy7` 4B.
public class SelectionSort implements SortUtil.Sort { F~q(@.b
N=AHS
/* Kv<f<>|L
* (non-Javadoc) pO_IUkt
* j$K*R."
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AbxhNNK
*/ z',Fa4@z
public void sort(int[] data) { I`zd:o]
int temp; 5r`rstV
for (int i = 0; i < data.length; i++) { K+pVRDRcs
int lowIndex = i; yQuL[#p
for (int j = data.length - 1; j > i; j--) { h2 KI
if (data[j] < data[lowIndex]) { 6<2H 7'
lowIndex = j; 9 w$m\nV
} =:aJZ[UU<2
} w
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SortUtil.swap(data,i,lowIndex); T'9ZR,{F
} -Arsmo
} 3P9ux
jUE gu
} ki?h7
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Shell排序: #F`A(n
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package org.rut.util.algorithm.support; 2 /FQ;<L
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import org.rut.util.algorithm.SortUtil; lDTHK2f
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/** E7t;p)x
* @author treeroot L8 L1_
* @since 2006-2-2 =A.$~9P
* @version 1.0 Y8zTw`:V
*/ #0>xa]S
public class ShellSort implements SortUtil.Sort{ MC* Hl`C
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/* (non-Javadoc) g:>'+(H ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T9C_=0(hn
*/ `PC9t)%.pV
public void sort(int[] data) { F}5d>nw
for(int i=data.length/2;i>2;i/=2){ 6Q^~O*cw
for(int j=0;j insertSort(data,j,i); V&w2pp0
} 7~ PL8
} 2 %dL96
insertSort(data,0,1); ;$QC_l''b
}
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@eJCr)#}
/** N7?B"p/
* @param data 1Y|a:){G
* @param j j-":>}oW2.
* @param i yd).}@
*/ N%
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private void insertSort(int[] data, int start, int inc) { GC{M"q|_
int temp; 83n%pS4x
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eXW|{asx
} $@>0;i::
} u.ggN=Z
} BDTL5N
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} );$99t
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快速排序: /8FmPCp}r
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package org.rut.util.algorithm.support; mHxR4%i5
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import org.rut.util.algorithm.SortUtil; !cwZ*eM
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/** Upe}9xf
* @author treeroot ]mTBD<3\
* @since 2006-2-2 >2'"}np*
* @version 1.0 w G %W{T$
*/ ;V
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public class QuickSort implements SortUtil.Sort{ TmsIyDcD~
/|IPBU 5
/* (non-Javadoc) vrkY7L3\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X2z<cJG|d@
*/ U ? +_\
public void sort(int[] data) { x4oWZEd
quickSort(data,0,data.length-1); =]Vz=<
} |A%9c.DG.
private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; j]Jgz<
file://swap BAf$tyh
SortUtil.swap(data,pivotIndex,j); Y@Uk P+{f=
j3gDGw;
int k=partition(data,i-1,j,data[j]); UEU/505
SortUtil.swap(data,k,j); =dmr,WE
if((k-i)>1) quickSort(data,i,k-1); T5(S2^)o
if((j-k)>1) quickSort(data,k+1,j); iwotEl0*{
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} '<R>cN"
/** R4m{D
* @param data 5*AXL.2ih
* @param i Zt `Tg7m
* @param j 4:`D3
* @return hF%M!otcJ-
*/ qt@L&v}~j
private int partition(int[] data, int l, int r,int pivot) { JvpGxj
do{ ]~({;;3o-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m`/Nl<
SortUtil.swap(data,l,r); 9iA rBL"
} rbZbj#
while(l SortUtil.swap(data,l,r); @5Xo2}o-Q
return l; KdkA@>L!;
} '5e,@t%y
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} C=:<[_m`
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改进后的快速排序: H@Dpht>[
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package org.rut.util.algorithm.support; 0j.K?]f)h
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import org.rut.util.algorithm.SortUtil; "
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/** jD:
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* @author treeroot %;PpwI
* @since 2006-2-2 %#HU~X:
* @version 1.0 0MG>77
*/ 5E]t4"
public class ImprovedQuickSort implements SortUtil.Sort { i0vm00oT
p/.8})c1r
private static int MAX_STACK_SIZE=4096; c{z$^)A/
private static int THRESHOLD=10; ;]{ee?Q^ld
/* (non-Javadoc) B,%Vy!o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yvAO"43
*/ [q<'ty
public void sort(int[] data) { kv+%
int[] stack=new int[MAX_STACK_SIZE]; sV\_DP/l
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int top=-1; *l2`- gbE
int pivot; c8l>OS5i3_
int pivotIndex,l,r; j4.wd
RK
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stack[++top]=0; p"g|]@m
stack[++top]=data.length-1; ,eXtY}E
h>N}M}8
while(top>0){ GG}%
int j=stack[top--]; wPA^nZ^}9c
int i=stack[top--]; __=H"UhWv
79\wjR!T
pivotIndex=(i+j)/2; _P>YG<*"kQ
pivot=data[pivotIndex]; #[93$)Gd!
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SortUtil.swap(data,pivotIndex,j); k]b*&.EY1
).T&fa"
file://partition -%nD'qy,.
l=i-1; 18X@0e
r=j; g3R(,IH
do{ Syk)S<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N]<(cG&p
SortUtil.swap(data,l,r); vQAFg G
} FFHq':v
while(l SortUtil.swap(data,l,r); :^;c(>u{
SortUtil.swap(data,l,j); R.~[$G!
D /eH~
if((l-i)>THRESHOLD){ 9!FX*}dC
stack[++top]=i; !jCgTo
y
stack[++top]=l-1; i?00!t
} / f%mYL
if((j-l)>THRESHOLD){ d2k-MZuT6
stack[++top]=l+1; K/Q"Z*
stack[++top]=j; _(W@FS
} dG\wW@}J
YeH!v, >
} 1W^hPY
file://new InsertSort().sort(data); y<)TYr
insertSort(data); aSL`yuXu
} 1+l 8%G=hB
/** rIyH/=;
* @param data ;b~ S/
*/ _;lw,;ftA
private void insertSort(int[] data) { tFN >]`Z
int temp; $] 6u#5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @MW@mP)#
} Zt=|q$"
} Q&9yrx.
} )uPJ?
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} RNg?o[S
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归并排序: ]hl*6
ys_2?uv
package org.rut.util.algorithm.support; >)><u4}
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import org.rut.util.algorithm.SortUtil; 1{}p_"s>
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/** ^X#y'odtbS
* @author treeroot RObnu*
* @since 2006-2-2 +v~xgUs
* @version 1.0 i"{O~[
*/ e#Tv5O
public class MergeSort implements SortUtil.Sort{ TpjiKM
m]p{]6h
/* (non-Javadoc) *}[\%u$ T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;>6< u.N
*/ wxN)dB
public void sort(int[] data) { GES}o9?#
int[] temp=new int[data.length]; rxY|&!f
mergeSort(data,temp,0,data.length-1); eUPa5{P
} o%d
TcoCN
@s5=6z]=H
private void mergeSort(int[] data,int[] temp,int l,int r){ eP{srP3 9
int mid=(l+r)/2; QX,$JM3
if(l==r) return ; kZ]H[\Fs
mergeSort(data,temp,l,mid); Na\ZV|;*tu
mergeSort(data,temp,mid+1,r); j3-YZKpg
for(int i=l;i<=r;i++){ [KDxB>R<{
temp=data; `e[S Zj\
} "*g+qll!5d
int i1=l; X/_I2X
int i2=mid+1; AtT7~cVe
for(int cur=l;cur<=r;cur++){ 86&M Zdv6
if(i1==mid+1) KK|w30\f
data[cur]=temp[i2++]; QcegT/vO
else if(i2>r) 0K!3Ny9(
data[cur]=temp[i1++]; eJDZ|$
else if(temp[i1] data[cur]=temp[i1++]; z^Hc'oVXj:
else 0<M-asI?
data[cur]=temp[i2++]; W.wPy@yi
} $8EEtr,!
} P.~UUS
HC`0Ni1
} 5Xy(za
;(Yb9Mr)z
改进后的归并排序: MK<
y$B{}
('J/Ww<
package org.rut.util.algorithm.support; o3WOp80hz
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import org.rut.util.algorithm.SortUtil; >P6"-x,["
awLvLkQb{
/** a ~o<>H
* @author treeroot I&PJ[U#~a
* @since 2006-2-2 )f8>kz(
* @version 1.0 u@a){A(P
*/ y\Wn:RR1 [
public class ImprovedMergeSort implements SortUtil.Sort { _H] \
@T1G#[C~t
private static final int THRESHOLD = 10; ]m1fo'
UpoSC
/* # :+Nr
* (non-Javadoc) Y,]Lk<Hm3
* /2^L;#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "2%z;!U1
*/ aq,1'~8XR
public void sort(int[] data) { xC76jE4
int[] temp=new int[data.length]; 0TN28:hcD
mergeSort(data,temp,0,data.length-1); (P>nA3:UXB
} *,u3Wm|7
,05PYBc3
private void mergeSort(int[] data, int[] temp, int l, int r) { y<`5
int i, j, k; LKN7Lkl
int mid = (l + r) / 2; @2(u=E: ^
if (l == r) MGdzrcF
return; "M%R{pGA7
if ((mid - l) >= THRESHOLD) D?Oe";"/
mergeSort(data, temp, l, mid); ]4~Yi1]
else +IZ=E
>a
insertSort(data, l, mid - l + 1); n,T
&n
if ((r - mid) > THRESHOLD) VFE@qX|
mergeSort(data, temp, mid + 1, r); |3$Ew.
else _kKG%U.gbK
insertSort(data, mid + 1, r - mid); Y;w|Fvjj+
44CZl{pt
for (i = l; i <= mid; i++) { [8ZDMe
temp = data; jaS<*_~#R
} oXo>pl
for (j = 1; j <= r - mid; j++) { ~M~DH-aX
temp[r - j + 1] = data[j + mid]; 5SFr
E`
} }G4I9Py
int a = temp[l]; If'q8G3]-
int b = temp[r]; }:$cK(|
for (i = l, j = r, k = l; k <= r; k++) { ?;~!C2Zs
if (a < b) { 2H%9l@}u
data[k] = temp[i++]; `
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a = temp; 14$%v;Su4
} else { \p^V~fy7rU
data[k] = temp[j--]; G1|1Z5r
b = temp[j]; i0M6;W1T
} Lf_Y4a#
} n%Oi~7>
} ^^q&VL
%:26v
/** (Cr
* @param data {lK2yi
* @param l <ZT
C^=3
* @param i eP~bl
*/ 4Kqo>|C
private void insertSort(int[] data, int start, int len) { ]($ \7+
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y S3~sA
} WZa6*pF
} -TD\?Q
} s|IBX0^@
} @$slGY
]9!y3"..W{
堆排序: SIK:0>yK"
0E\#!L
package org.rut.util.algorithm.support; Q#MB=:0{
4!sK>l!
import org.rut.util.algorithm.SortUtil; &l6@C3N$
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/** CU=sQfE
* @author treeroot D5gj*/"
* @since 2006-2-2 `%YMUBaI
* @version 1.0 ?N4FB*x
*/ .!q_jl%U
public class HeapSort implements SortUtil.Sort{ coCT]<
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/* (non-Javadoc) Kebr>t8^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hp f0fU
*/ ,#;hI{E
public void sort(int[] data) { MkW=sD_
MaxHeap h=new MaxHeap(); V 7,dx@J-
h.init(data); <F^9ML+'
for(int i=0;i h.remove(); \Zf=A[
System.arraycopy(h.queue,1,data,0,data.length); ByqVNz0L
} QC'Ru'8S
i]n2\v AG
private static class MaxHeap{ /? %V%
n
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void init(int[] data){ xLed];2G
this.queue=new int[data.length+1]; GR|\OJ<2
for(int i=0;i queue[++size]=data; P!-RZEt$
fixUp(size); b5MBzFw
} bo<P%$(D
} HMVP71
h6k" D4o\
private int size=0; -1Tr!I:1
AL":j6!OQ
private int[] queue; 20I`F>-*
&G2&OFAr]q
public int get() { )>2L(~W
return queue[1]; n1%2sV)>
} a&{Y~Og?%
%NQ
mV_1
public void remove() { (uX?XX^
SortUtil.swap(queue,1,size--); {.Qv1oOa
fixDown(1); 4T@+gy^.
} a~Dk@>+P>
file://fixdown =]%,&Se
private void fixDown(int k) { /KvJjt'8
int j; _1[Wv?
while ((j = k << 1) <= size) { brp3xgQ`]
if (j < size %26amp;%26amp; queue[j] j++; gaN/
kp
if (queue[k]>queue[j]) file://不用交换 uD/@d'd_4L
break; z5gVP8*z5
SortUtil.swap(queue,j,k); ]Ea-MeH
k = j; JDf>Qg{
} 7:B/?E
} xHt7/8wF
private void fixUp(int k) { 4Q !A w
while (k > 1) { m 3UK`~ji
int j = k >> 1; \k5"&]I3
if (queue[j]>queue[k]) {9(0s| pr
break; -ED}
6E
SortUtil.swap(queue,j,k); (F^R9G|
k = j; dC,C[7\
} 5r)8MklZ
} R?u(aY)P
a/uo)']B
} %Bw:6Y4LZ
xc*a(v0
} q\@_L.tc[
&]YyV .
SortUtil: Ck#e54gJX
T1q27I
package org.rut.util.algorithm; $y6 <2w%b
U;/2\Ii
import org.rut.util.algorithm.support.BubbleSort; QM8Ic,QFvo
import org.rut.util.algorithm.support.HeapSort; w71YA#cg
import org.rut.util.algorithm.support.ImprovedMergeSort; tAq0Z)
import org.rut.util.algorithm.support.ImprovedQuickSort; T9R#.y,
import org.rut.util.algorithm.support.InsertSort; .K84"Gdx
import org.rut.util.algorithm.support.MergeSort; mhVLlbY|t
import org.rut.util.algorithm.support.QuickSort; :%&
E58
import org.rut.util.algorithm.support.SelectionSort; -TVwoK
import org.rut.util.algorithm.support.ShellSort; I;Mm +5A
)Xqjl
/**
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* @author treeroot PP{9Y Vr
* @since 2006-2-2 P@PF"{S
* @version 1.0 _cvX$(Sg
*/ |kK5:\H
public class SortUtil { 8\68NG6o
public final static int INSERT = 1; WP*}X7IS
public final static int BUBBLE = 2; tx7 zG.,
public final static int SELECTION = 3; 2*Qi4%s#
public final static int SHELL = 4; $ (;:4
public final static int QUICK = 5; RWv4/=}(G
public final static int IMPROVED_QUICK = 6; cW>=/
public final static int MERGE = 7; ef^GJTv&k
public final static int IMPROVED_MERGE = 8; pMT7 /y-
public final static int HEAP = 9; ~bkO8tn
7Tk//By7
public static void sort(int[] data) { k JmwR
sort(data, IMPROVED_QUICK); lIS`_H}
} zHA::6OgPN
private static String[] name={ nHm29{G0
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l6#Y}<tq
}; _%R^8FjH*
7)QZ<fme
private static Sort[] impl=new Sort[]{ Xuu&`U~%
new InsertSort(), ..5~x~O
new BubbleSort(), Hk;;+ '-
new SelectionSort(), W6T4Zsg
new ShellSort(), KO=$Hr?f;
new QuickSort(), G+N1#0,q
new ImprovedQuickSort(), ^85Eveu
new MergeSort(), Soq#cl'll-
new ImprovedMergeSort(), <qfAW?tF
new HeapSort() %W9R08`
}; l,l qhq\
\{`^Q+<
public static String toString(int algorithm){ qK7:[\T|?T
return name[algorithm-1]; .Pj<Pe
} !O%!A<3
8<"g&+T
public static void sort(int[] data, int algorithm) { ZeuL*c \
impl[algorithm-1].sort(data); joskKik^
} W]/J]O6
;*Vnwt A
public static interface Sort { qdI%v#'M
public void sort(int[] data); _!1LV[x!s
} ;>mM9^Jaf
Ic4#Tk20i
public static void swap(int[] data, int i, int j) { ?Fx~_GT
int temp = data; hhaiHi!$
data = data[j]; ^P@:CBO
data[j] = temp; 'UhHcMh:
} Fn.JtIu
} _|["}M"?