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。 k].swvIi
插入排序: *z)gSX
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package org.rut.util.algorithm.support; RRB=JP{r
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import org.rut.util.algorithm.SortUtil; P"l'? `
/** Je6wio-4
* @author treeroot qT !lq
* @since 2006-2-2 @4D{lb"{
* @version 1.0 ^ =n7E
*/ Q$:Q6/5.
public class InsertSort implements SortUtil.Sort{ w$AR
1:<(Q2X%
/* (non-Javadoc) } `r.fD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hz."4nhv
*/ ~59lkr8
public void sort(int[] data) { :i4(cap&}F
int temp;
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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); <Q/)SN6_E
} GCq4{_B\Q
} *d;TpwUI
} vdAd@Z~\
Z\EA!Cs3
} pCrm `hy(
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冒泡排序: +(92}~RK
A8{ xZsH
package org.rut.util.algorithm.support; .pQ5lK(R
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import org.rut.util.algorithm.SortUtil; kj[boxN
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/** DAP/
* @author treeroot .ex;4( -!
* @since 2006-2-2 ^@O7d1&y
* @version 1.0 #`
gu<xlW
*/ Xi) ;dcNJ
public class BubbleSort implements SortUtil.Sort{ rMi\#[oB
GRbbU#/=G
/* (non-Javadoc) "q+Z*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g.@[mf0r
*/ `dG;SM$T,
public void sort(int[] data) { #gO[di0WhC
int temp; c/A?-9
for(int i=0;i for(int j=data.length-1;j>i;j--){ +cqUp6x.
if(data[j] SortUtil.swap(data,j,j-1); q,@#
cQBV
} wCg7JW#
} $ %MgIy
} S-q"'5>
} t#|R"Q#
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} |cY,@X,X6
ufIvvZ*
选择排序: Cj-&L<
1:](=%oM&k
package org.rut.util.algorithm.support; x@Z{5w_a
t^"8M6BqC;
import org.rut.util.algorithm.SortUtil; v$Fz^<Na
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/** #jg-q|nd
* @author treeroot ,^8':X"A{!
* @since 2006-2-2 `1(ED= |
* @version 1.0 _Ffg"xoC
*/ <I34@;R c
public class SelectionSort implements SortUtil.Sort { [B;okW
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/* /~w*)e)
* (non-Javadoc) r^}0qO,XM
* 3kC|y[.&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Iqqjk
*/ xm1di@
public void sort(int[] data) { pXO09L/nv
int temp; ah,f~.X_|
for (int i = 0; i < data.length; i++) { $M,<=.oT
int lowIndex = i; d=qVIpZ
for (int j = data.length - 1; j > i; j--) { PHqg~q;*
if (data[j] < data[lowIndex]) { J.R\h!
lowIndex = j; m\XsU?SuX
} ygIn6.p
} %K|f,w=m
SortUtil.swap(data,i,lowIndex); M' z.d
} g^+p7G
}
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ajk}&`Wj"
} C0N}B1-MU
O[t?*m1/
Shell排序: d;Y Kw1
Slg*[r#
package org.rut.util.algorithm.support; n({%|O<|
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import org.rut.util.algorithm.SortUtil; 6c-3+,Y"#
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/** s0;a j<J
* @author treeroot InbB2l4G
* @since 2006-2-2 UzaAL9k
* @version 1.0 GJcxqgk$
*/ 4z(B`t~7
public class ShellSort implements SortUtil.Sort{ 4bA^Gq
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/* (non-Javadoc) T^|k`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AaA!U!B
*/ SgewAng?@o
public void sort(int[] data) { b`D]L/}pr
for(int i=data.length/2;i>2;i/=2){ v:4j3J$z
for(int j=0;j insertSort(data,j,i); ; >H1A
} CYy=f-
} Z3{1`"\<K
insertSort(data,0,1); XJeWhk3R9
} ptT-{vG
02t({>`
/** Ue9Y+'-x
* @param data _-y1>{]H
* @param j we`BqZV
* @param i SXqB<j$.;
*/ ?g4Rk9<!i
private void insertSort(int[] data, int start, int inc) { V /2NIh
int temp; '[liZCg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J^jd@E
} ?s$d("~
} GxD`M2
} #;ObugY,
[%bGs1U
} OgIRI8L
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快速排序: K0j%\]\Tp
}8tF.QjR|
package org.rut.util.algorithm.support; wW*7
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import org.rut.util.algorithm.SortUtil; ^@* `vz^_
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/** ;LP3
* @author treeroot "JSIn"/
* @since 2006-2-2 ,M{G
X
* @version 1.0 g@!U^mr*3
*/ v; i4ZSV^A
public class QuickSort implements SortUtil.Sort{ lM4 Z7mT /
tcXXo&ZS
/* (non-Javadoc) MF< ZB_@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]?1_.Wjtt
*/ (J5}1Q<K
public void sort(int[] data) { ,3_Sf?
quickSort(data,0,data.length-1); ]>(pj9)
} fV>d_6Lf}
private void quickSort(int[] data,int i,int j){ oMg-.!6
int pivotIndex=(i+j)/2; Gl'G;F$Y-
file://swap W/BPf{U
SortUtil.swap(data,pivotIndex,j); 0}e?hbF%U
/.7RWy`
int k=partition(data,i-1,j,data[j]); *
rlVE
SortUtil.swap(data,k,j); =9ff983
if((k-i)>1) quickSort(data,i,k-1); 4xg)e`
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if((j-k)>1) quickSort(data,k+1,j);
"LB
MYZ
pTq DPU
} !Ea >tQ|
/** J/e]
* @param data Wx]Xa]-
* @param i ]Pe>T&
* @param j [yN+(^i
* @return ./XX
*/ W=^.s>7G
private int partition(int[] data, int l, int r,int pivot) { wl]3g
do{ _"Bj`5S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3,q?WH%_
SortUtil.swap(data,l,r); ``jNj1t{}
} 1!(lpp
while(l SortUtil.swap(data,l,r); Y}R$RDRL
return l; 2
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} +U<YM94?
B@M9oNWHu
} g=nb-A{#
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改进后的快速排序: uFSU|SDd.
5GScqY,aB
package org.rut.util.algorithm.support; \78^ O
n?cC]k;P~
import org.rut.util.algorithm.SortUtil; $Okmurnn
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/** *KDTBd
* @author treeroot LXX('d
* @since 2006-2-2 -W^{)%4g
* @version 1.0 $]_SPu
*/ rwXpB<@l@
public class ImprovedQuickSort implements SortUtil.Sort { 03 gbcNo
#T8o+tv
private static int MAX_STACK_SIZE=4096; 7uc\AhOk6
private static int THRESHOLD=10; KX9IC5pR
/* (non-Javadoc) 7mYcO3{5{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +^(_S9CO
*/ -(?/95 Y
public void sort(int[] data) { @-[}pZ/
int[] stack=new int[MAX_STACK_SIZE]; w~v6=^
qzNb\y9G
int top=-1; Jyg1z,B <
int pivot; ?SgFD4<~P
int pivotIndex,l,r; GalSqtbmDt
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stack[++top]=0; <$-^^b(y
stack[++top]=data.length-1; hT-^1:N
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while(top>0){ ben-<3r
int j=stack[top--]; |OCiq|#
int i=stack[top--]; f> Jj5he/
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pivotIndex=(i+j)/2; 6agG*x
pivot=data[pivotIndex]; 2{=D)aC$f
B1|nT?}J(
SortUtil.swap(data,pivotIndex,j); xK_UkB-$i
z9IW&f~~P
file://partition 9k71h`5
l=i-1; `{{6vb^g
r=j; [ K/l;Zd
do{ cJ$jU{}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =nCA=-Jv
SortUtil.swap(data,l,r); (.!9
} H( .9tuA
while(l SortUtil.swap(data,l,r); udUc&pX
SortUtil.swap(data,l,j); |MGT8C&^!
#1$4<o#M
if((l-i)>THRESHOLD){ M5:.\0_
stack[++top]=i; 3Ed
stack[++top]=l-1; eGQ4aQhi
} (LTu=1
if((j-l)>THRESHOLD){ 8m' f8.x
stack[++top]=l+1; x`7Le&4f
stack[++top]=j; ":+d7xR?o
} </_QldL_
,H6P%
} j%`
C
file://new InsertSort().sort(data); @uyQH c,V
insertSort(data); &q|vvF<G
} W[J2>`k9
/** 0-uj0"r`
* @param data aB~k8]q.
*/ m,+PYq
private void insertSort(int[] data) { =I'iD0eR
int temp; I>.pkf<V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Td|,3
n
} BEb?jRMjLg
} Xxh^4vKjX
} 2H$](k?
=Ks&m4
} UNb7WN
T U_'1
归并排序: 0cB]:*W
.?NfV%vv
package org.rut.util.algorithm.support; vT{(7m!Ra
p9i7<X2&
import org.rut.util.algorithm.SortUtil; no-";{c
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/** Cu%BU}(
* @author treeroot 4qDO(YWf
* @since 2006-2-2 4`l$0m@>
* @version 1.0 ~\-=q^/!
*/ b~fl,(sZp
public class MergeSort implements SortUtil.Sort{ <#BK(W~$
y]{b4e
/* (non-Javadoc) ?yAb=zI1b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e:-pqZT`
*/ 4ZUtK/i+r
public void sort(int[] data) { ~N9k8eT
int[] temp=new int[data.length]; [.|& /O
mergeSort(data,temp,0,data.length-1); e^q^AP+*
} *sp")h#Z
yj_/:eX
private void mergeSort(int[] data,int[] temp,int l,int r){ 2* `kkS
int mid=(l+r)/2; P51c Ehf
if(l==r) return ; FYik}wH]
mergeSort(data,temp,l,mid); >yn?@ve@
mergeSort(data,temp,mid+1,r); )2" g)9!
for(int i=l;i<=r;i++){ ("=q-6$G
temp=data; FDuA5At
} ][Tw^r&
int i1=l; O2 Y|<m
int i2=mid+1; oVk!C a
for(int cur=l;cur<=r;cur++){ Yf[Cmn
if(i1==mid+1) $G0e1)D
data[cur]=temp[i2++]; %9zpPrWF
else if(i2>r) DmgDhNXKq
data[cur]=temp[i1++]; lv]U)p
else if(temp[i1] data[cur]=temp[i1++]; .=}\yYGe
else {@Lun6\
data[cur]=temp[i2++]; +~F>:v?Rh
} Q3+%8zZI
} zhow\l2t}
CaCApL
} `Qb!W45
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改进后的归并排序: ;/Y#ph[
kygj" @EX
package org.rut.util.algorithm.support; T@vE@D
am5;B`}q
import org.rut.util.algorithm.SortUtil; R7:u 8-dU1
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/** _0naqa!JyH
* @author treeroot )<J #RgE
* @since 2006-2-2 3?aM\z;
* @version 1.0 'Sd+CXS
*/ }duqX R
public class ImprovedMergeSort implements SortUtil.Sort { arKf9`9
M3KK^YRN
private static final int THRESHOLD = 10; -+qg
BuM#&]s
/* 0*P-/)o x
* (non-Javadoc) gmTBp}3
* ]c_lNHssmq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~,F]~|U7l
*/ C-49u<;,
public void sort(int[] data) { #r>)A
int[] temp=new int[data.length]; 2 PPb
mergeSort(data,temp,0,data.length-1); C4X3;l Z%S
} +{6:]
e"EGqn&!
private void mergeSort(int[] data, int[] temp, int l, int r) { 'Eia=@
int i, j, k; DfkGNBY
int mid = (l + r) / 2; @CR<&^s5V
if (l == r) #l)o<Z
return; Pj56,qd>s
if ((mid - l) >= THRESHOLD) -
]We|{
mergeSort(data, temp, l, mid); }n^}%GB
else _,F\%}
insertSort(data, l, mid - l + 1); MftaT5
if ((r - mid) > THRESHOLD) ZrP
8/>
mergeSort(data, temp, mid + 1, r); -=:tlH
n
else =dKk #*
insertSort(data, mid + 1, r - mid); Y/mf Bkh
U\{I09@E 0
for (i = l; i <= mid; i++) { [4;_8-[Nv
temp = data; B2BG*xa
} *.$ov<E.
for (j = 1; j <= r - mid; j++) { &j'k9C2p
temp[r - j + 1] = data[j + mid]; kMzDmgoxNg
} *
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int a = temp[l]; ):+^893)
int b = temp[r]; k|]l2zlT
for (i = l, j = r, k = l; k <= r; k++) { "j&p3
if (a < b) { Ub\&k[F
data[k] = temp[i++]; +=L+35M
a = temp; 9*"K+t:
} else { fe6Op
data[k] = temp[j--]; D@{m
b = temp[j]; d`?EEO
} $WE_aNfja
} %0815
5M
} <T'fJcR
GXv2B%i8
/** h52+f
* @param data Pa; *%7
* @param l Cx) N;x
* @param i h4slQq~K
*/ )=N.z6?
private void insertSort(int[] data, int start, int len) { h_Er$ZT64
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >9g^-~X;v
} E/% F0\B
} I2z7}*<u
} Br$/hn=
} '/ueY#eG
+~
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堆排序: |CS&H2!s
zZ<~yi3A9
package org.rut.util.algorithm.support; ]YDqmIW
"tK3h3/Xv
import org.rut.util.algorithm.SortUtil; La^Zr,T!
}ZwnG=7T?
/** {qry2ZT5
* @author treeroot eEmLl(Lb
* @since 2006-2-2 -42 U
* @version 1.0 lvk*Db$
*/ 4uVyf^f\]f
public class HeapSort implements SortUtil.Sort{ -x/g+T-
<PO-S\N
/* (non-Javadoc) 1-! |_<EW1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iIo>]\Pw
*/ ybB<AkYc
public void sort(int[] data) { ;ov}%t>UD
MaxHeap h=new MaxHeap(); pAEJ=Te
h.init(data); ~3Z(0gujD
for(int i=0;i h.remove(); Xn<|6u
System.arraycopy(h.queue,1,data,0,data.length); D{t0OvQag
} h!hv{c
PO2]x:
private static class MaxHeap{ r7)iNTQ1
E?mW4?
void init(int[] data){ .e:+Ek+
this.queue=new int[data.length+1]; NXE1v~9V
for(int i=0;i queue[++size]=data; "yXqf%CGE
fixUp(size); Qbj:^{`>(
} P6tJo{l8w
} I|mxyyf
k"FY
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private int size=0; Lr>4~1:`
{
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private int[] queue; 1T3YFt@&I
XoiZ"zE
public int get() { nm,Tng
oj
return queue[1]; m)<N:|
} & *&
69C
ss'
public void remove() { qkyYt#4E
SortUtil.swap(queue,1,size--); u-dF~.x
fixDown(1); E~Y%x/oX
} {O[ !*+O
file://fixdown Q[Tbdc%1EG
private void fixDown(int k) { Nk>6:Ho{G
int j; ZOzyf/?.
while ((j = k << 1) <= size) { rmnnV[@o
if (j < size %26amp;%26amp; queue[j] j++; jRdW=/q+(
if (queue[k]>queue[j]) file://不用交换 U09@pne8
break; RKz _GEH)
SortUtil.swap(queue,j,k); y|D-W>0cX3
k = j; `VOLw*Ci
} DZ;2aH
} (WS<6j[q
private void fixUp(int k) { SYK?5_804
while (k > 1) { (pQ$<c
int j = k >> 1; ^m^,:]I0P
if (queue[j]>queue[k]) a% 82I::t
break; &sPu3.p
SortUtil.swap(queue,j,k); Hkj|
e6
k = j; O`(it%Ho!
} f]^ @z<FC
} {S5D~A*a+
>z8y L+
} }(if|skau
E{|n\|
} +Sdki::
$U5$*R@jo[
SortUtil: X1h*.reFAL
v{>9&o.J
package org.rut.util.algorithm; TsZX'Yn
E@;v|Xc
import org.rut.util.algorithm.support.BubbleSort; 1 ^=[k
import org.rut.util.algorithm.support.HeapSort; 4=n%<U`Z/
import org.rut.util.algorithm.support.ImprovedMergeSort; 27jZ~Bp$
import org.rut.util.algorithm.support.ImprovedQuickSort;
PYYO-Twg
import org.rut.util.algorithm.support.InsertSort; _:;j)J0
import org.rut.util.algorithm.support.MergeSort; d`Em)3v
import org.rut.util.algorithm.support.QuickSort; b(gcnSzM2
import org.rut.util.algorithm.support.SelectionSort; m-!z(vcn
import org.rut.util.algorithm.support.ShellSort; \A3yM{G~+
8uhB&qxB
/** WN?meZ/N/
* @author treeroot i(>v~T,(
* @since 2006-2-2 Z$a4@W9o
* @version 1.0 z15QFVm
*/ O0<GFL$)&
public class SortUtil { QJ-?67_i
public final static int INSERT = 1; !J@pox-t
public final static int BUBBLE = 2; `<l|XPv
public final static int SELECTION = 3; ,TxZ:f`"
public final static int SHELL = 4; uv
dx>5]
public final static int QUICK = 5; A&fh0E (t
public final static int IMPROVED_QUICK = 6; y0XI?Wr
public final static int MERGE = 7; } "ts
public final static int IMPROVED_MERGE = 8; 1&}^{ Ys
public final static int HEAP = 9; V5ihplAk
OKq={l
public static void sort(int[] data) { Y_Lsmq2!
sort(data, IMPROVED_QUICK); 7QkAr
} ,s1n!@9
private static String[] name={ :`P;(h
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?`O Dt]s
}; *Cgd?*\7
*:A)j?(
private static Sort[] impl=new Sort[]{ #[#dc]D
new InsertSort(), 4==LtEp
new BubbleSort(), Jid :$T>
new SelectionSort(), 5{|\h}
new ShellSort(), $pGk%8l%
new QuickSort(), wen6"
new ImprovedQuickSort(), { n%U2LVL
new MergeSort(), $yb8..+
new ImprovedMergeSort(), JZ=a 3)x"
new HeapSort() H{T)?J~
}; dfq5P!'
YR`Mi.,Sfm
public static String toString(int algorithm){ \
o&i63u
return name[algorithm-1]; !kfnqe?|
} [}_ar
7e"(]NC84
public static void sort(int[] data, int algorithm) { uNY]%[AnJ
impl[algorithm-1].sort(data); ]H[FZY
}
r4qFEFV3%
yMa5?]J
public static interface Sort { 3?uP$(l
public void sort(int[] data); , 0rC_)&B
} :+,qvu!M7
%tzz3Y
public static void swap(int[] data, int i, int j) { m,TqyP#
int temp = data; t(MlZ>H
data = data[j]; 0,;FiOp
data[j] = temp; #Y*AG xk
} F'#e]/V1
} ;mb
6i_