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。 9 I]*T
插入排序: r[EN`AxDb
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package org.rut.util.algorithm.support; zh*NRN
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import org.rut.util.algorithm.SortUtil; J5@_OIc1y
/** >'Y] C\
* @author treeroot ?|N:[.
* @since 2006-2-2 i+21t G$
* @version 1.0 90K&s#+13
*/ .6e5w1r63
public class InsertSort implements SortUtil.Sort{ R0oP##]
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/* (non-Javadoc) dYfVox;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \W/cC'
*/ 0sV;TQt+f
public void sort(int[] data) { WXO@oZ!
int temp; ME0ivr*=:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,h8)5Mj/J
} 0fi+tc30
} CIO&VK
} DX4
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} (8=Zr0He
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冒泡排序: ]C5JP~#z
:rk]o*
package org.rut.util.algorithm.support; JK[7&C-O
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import org.rut.util.algorithm.SortUtil; }1X,~y]
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/** {U-VInu
* @author treeroot }v=q6C#Q>
* @since 2006-2-2 ^XZmtB
* @version 1.0 ~3/>;[!
*/ (MJu3t
@
public class BubbleSort implements SortUtil.Sort{ s-
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/* (non-Javadoc) LLaoND6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |iO2,99i
*/ ]<++w;#+x
public void sort(int[] data) { VPtA
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int temp; t=A|
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for(int i=0;i for(int j=data.length-1;j>i;j--){ "F)7!e
if(data[j] SortUtil.swap(data,j,j-1); Q:=s99
} ^t9"!K
} i aP+Vab
} P%%Cd
} mxP{"6
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} @f{)]I +f
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选择排序: =We}&80x
:^J(%zy
package org.rut.util.algorithm.support; LDwu?"P!
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import org.rut.util.algorithm.SortUtil; a/`fJY6rR
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/** hMi!H.EX.
* @author treeroot iK=H9j
* @since 2006-2-2 IxgnZX4N
* @version 1.0 qXP)R/~OZ
*/ f85j?Jm
public class SelectionSort implements SortUtil.Sort { 0&-!v?6)
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/* B)ynF?"
* (non-Javadoc) X+bLLW>&
* }_5z(7}3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .eq-i>
*/ t(Iy[-
public void sort(int[] data) { 2ORWdR.b
int temp; 8=)Aksu
for (int i = 0; i < data.length; i++) { wF3mQ_hv:@
int lowIndex = i; |K/#2y~
for (int j = data.length - 1; j > i; j--) { E(]yjZ/
if (data[j] < data[lowIndex]) { klJDYFX=HK
lowIndex = j; Tff7SEP
} EzzzH(!j
} bLSI\
SortUtil.swap(data,i,lowIndex); Jg;Hg[
} "LXLUa03
} >JCSOI
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} &v3r#$Hj[
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Shell排序: wyAqrf
[J-r*t"!
package org.rut.util.algorithm.support; kDO6:sjR7
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import org.rut.util.algorithm.SortUtil; :qgdn,Me
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/** J,m.LpY
* @author treeroot bis/Nfr]
* @since 2006-2-2 f_.1)O'83
* @version 1.0 K< Ct
*/ hO{@!H$l
public class ShellSort implements SortUtil.Sort{ _2f}WY3S
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/* (non-Javadoc) =CRaMjN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]2b" oHg
*/ R>pa? tQgK
public void sort(int[] data) { fVR ~PG0
for(int i=data.length/2;i>2;i/=2){ !v`q%JW(
for(int j=0;j insertSort(data,j,i); +u25>pX
} TSHp.ABf
} 0SvPyf%AC
insertSort(data,0,1); |nU:
} tGM)"u-
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/** vbwEX 6
* @param data ~}4H=[Zu
* @param j K7e<hdP_#
* @param i :GL|:
*/ u!L8Sv
private void insertSort(int[] data, int start, int inc) { -@^SiI:C
int temp; DB?_E{y]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {"{J*QH
} C .YtjLQP$
} "lN<v=
} /0SPRf}p
@&EE/j^
} &Lq @af#
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快速排序: 0Vy*
0\{S
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package org.rut.util.algorithm.support; 5l(;+#3y/
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import org.rut.util.algorithm.SortUtil; G ROl9xp2
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/** tQ2*kE
* @author treeroot hb?
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* @since 2006-2-2 }[i35f[w
* @version 1.0 A9lqVMp64
*/ 2sittP
public class QuickSort implements SortUtil.Sort{ +;;fw |/
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/* (non-Javadoc) cteHuRd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }T(|\
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*/ `L9o!OsQ
public void sort(int[] data) { R9=,T0Y
p
quickSort(data,0,data.length-1); sV[|op
} 09x\i/nb
private void quickSort(int[] data,int i,int j){ w_|WberU
int pivotIndex=(i+j)/2; -F5U.6~`!
file://swap @d4zSG/s5w
SortUtil.swap(data,pivotIndex,j); k?xtZ,n{s
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int k=partition(data,i-1,j,data[j]); "Ny_RF
SortUtil.swap(data,k,j); wlKL|N
if((k-i)>1) quickSort(data,i,k-1); m+uh6IqN./
if((j-k)>1) quickSort(data,k+1,j); w;#9 hW&
fylaH(LER
} j j$'DZk
/** *]Vx=7D
* @param data H56e#:[$
* @param i y8<,>
* @param j j83p[qR7o
* @return A#jiCIc
*/ 5'z&kl0"S
private int partition(int[] data, int l, int r,int pivot) { ;#Mq=Fr-SG
do{ DI$zyj~3
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c\;}ov+
SortUtil.swap(data,l,r); J-\b?Ra
} .vT'hu
while(l SortUtil.swap(data,l,r); 1 1p\
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return l; m9PcDhv
} cAktSoF
h_CeGl!M}
} _k
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改进后的快速排序: <!w-op2@ir
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package org.rut.util.algorithm.support; <edAWc+
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import org.rut.util.algorithm.SortUtil; 2%@j<yS
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/** mIr{Wocx
* @author treeroot s lPFDBx
* @since 2006-2-2 WVo%'DtF`
* @version 1.0 f}+G;a9Nj
*/ 2"i<--Y
public class ImprovedQuickSort implements SortUtil.Sort { ,cm2uY
@Sv
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private static int MAX_STACK_SIZE=4096; PD/~@OsxU
private static int THRESHOLD=10; ' !_44
/* (non-Javadoc) 0{B5C[PTG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <R!qOQI
*/ tDi=T]-bt
public void sort(int[] data) { Z-vzq;
int[] stack=new int[MAX_STACK_SIZE]; #Xn#e
lYZHM,"
int top=-1; {)%B?75~
int pivot; riBT5
int pivotIndex,l,r; p 3_Q
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stack[++top]=0; Y{J/Oib
stack[++top]=data.length-1; ^#Wf
+HfjnEbtBs
while(top>0){ hrXN38-
int j=stack[top--]; (JM4W
"7'
int i=stack[top--]; rzO:9# d
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pivotIndex=(i+j)/2; EG 1SIEo
pivot=data[pivotIndex]; 5-C6; 7%:
d-?~O~qD|!
SortUtil.swap(data,pivotIndex,j); T}\U:@b
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file://partition I{RktO;1
l=i-1; (te\!$
r=j; P!vBS"S
do{ 2>H\arEstR
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pw$I~3OFd
SortUtil.swap(data,l,r); _QErQ^`
} w6E?TI
while(l SortUtil.swap(data,l,r); >"Hj=?
SortUtil.swap(data,l,j); rSZWmns
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if((l-i)>THRESHOLD){ JEP"2M N,
stack[++top]=i; l'o}4am
stack[++top]=l-1; 2`Pk@,:_
} f9&D1Gh+w
if((j-l)>THRESHOLD){ ^<E,aCy
stack[++top]=l+1; prm
stack[++top]=j; SS`\,%aog
} Nh+$'6yT%
cdh1~'q/
} .*zQ\P
file://new InsertSort().sort(data); >^jm7}+hb
insertSort(data); U^,ld`
} A] F K\
/** ~M\s!!t3
* @param data (Q'XjN\#
*/ OE[/sv
private void insertSort(int[] data) { fe Q%L
int temp; =_UPZ]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;0BCM(>Wo
} V~+Unn
} OIoAqt
} &=/.$i-w$
X;0EgIqh3
} 7v?Ygtv
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归并排序: PCU6E9~t2
3!}#@<j
package org.rut.util.algorithm.support; BPPhVE
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import org.rut.util.algorithm.SortUtil; dB/Epc&
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/** u.arkp
* @author treeroot te:VYP
* @since 2006-2-2 @&~BGh
* @version 1.0 \l[5U3{
*/ U "}Kth
public class MergeSort implements SortUtil.Sort{ S\f^y8*<
: i(h[0
/* (non-Javadoc) [mwfgh&4%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {:rU5 !n
*/ |[: `izW
public void sort(int[] data) { G>!"XK:fB
int[] temp=new int[data.length]; _&:o"""Wf
mergeSort(data,temp,0,data.length-1); r|P4|_No
} &?9.Y,
I,#U
_
private void mergeSort(int[] data,int[] temp,int l,int r){ eHjR/MMr_
int mid=(l+r)/2; 7_{x '#7
if(l==r) return ; sF|lhLi
mergeSort(data,temp,l,mid); CHLMY}O0
mergeSort(data,temp,mid+1,r); CZuxH
for(int i=l;i<=r;i++){ 16]O^R;r
temp=data; &,#VhT![
} 1'g?B`
int i1=l; \myj Y
int i2=mid+1; adxJA}K}
for(int cur=l;cur<=r;cur++){ sX=!o})0
if(i1==mid+1) Cf+O7Y`^
data[cur]=temp[i2++]; d~n+Ds)%F
else if(i2>r) 7N""w5
data[cur]=temp[i1++]; ;ndg,05_
else if(temp[i1] data[cur]=temp[i1++]; ?+TD2~rD(
else ))MP]j9
T
data[cur]=temp[i2++]; H)4Rs~;{'g
} CsE|pXVG
} 5=
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-7yX>Hjl
} jLEU V
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改进后的归并排序: gNO$WY^
V*/))n?
package org.rut.util.algorithm.support; lF#Kg!-l
mhs%b4'>
import org.rut.util.algorithm.SortUtil; .a^/r'?
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/** ck^Z,AKL+
* @author treeroot G{s ,Y^
* @since 2006-2-2 )WzCUYE 1/
* @version 1.0 8G@FX $$Q
*/ Tq?W @DM*
public class ImprovedMergeSort implements SortUtil.Sort { x^;nfqn|
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private static final int THRESHOLD = 10; 2L\h+)
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/* . XY'l
* (non-Javadoc) \mycn/e
* x,V_P/?%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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]{
*/ ES+&e/G"ds
public void sort(int[] data) { Vs"M Cqi
int[] temp=new int[data.length]; < ^&'r5H
mergeSort(data,temp,0,data.length-1); ,iHt*SZ,*
} y}3V3uqK
R@EFG%|`_
private void mergeSort(int[] data, int[] temp, int l, int r) { LQS*/s0
int i, j, k; Comuc
int mid = (l + r) / 2; K}zw%!ex
if (l == r) FJD*A`a
return; 712i|
if ((mid - l) >= THRESHOLD) M\]E;C'"U
mergeSort(data, temp, l, mid); 4gZN~_AI<
else $X{& KLM[
insertSort(data, l, mid - l + 1); f]hW>-B(q
if ((r - mid) > THRESHOLD) 1|%$ie
mergeSort(data, temp, mid + 1, r); ,rN7X<s54
else $~j]/ U
insertSort(data, mid + 1, r - mid); ]f\rB8k|&
''(T3;^ +
for (i = l; i <= mid; i++) { }Jc^p
temp = data; 6-^+btl)#
} )Qo6bei!
for (j = 1; j <= r - mid; j++) { V2bod=&Lc
temp[r - j + 1] = data[j + mid]; EUNG&U
} q}8R>`Z{
int a = temp[l]; XR+2|o
int b = temp[r]; D/)xe:
for (i = l, j = r, k = l; k <= r; k++) { Z# :Ww
if (a < b) { B^OhL!*tI
data[k] = temp[i++]; -8TLnl~[
a = temp; b
:+
X3
} else { Zs4N0N{
data[k] = temp[j--]; abF_i#
b = temp[j]; 4f1*?HX&
} <;Xj4
J
} "'8$hV65.p
} 1wq6E
=EG[_i{r
/** O[m+5+
* @param data mT9TSW}
* @param l ' E@D
* @param i B.{yf4a#L
*/ E;X'.7[c
private void insertSort(int[] data, int start, int len) { 1b't"i M
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xOt|j4
} +[>m`XTq
} KUp
lN1Sy
} 4u;W1=+Vn
} s5[ Cr"q7B
mjw:Z,
堆排序: 2yN~[,L
"{&!fD~w
package org.rut.util.algorithm.support; 1M+mH#?
Hu;#uAnxQ
import org.rut.util.algorithm.SortUtil; 5bAy@n
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/** ;Z8K3p
* @author treeroot HID;~Ne
* @since 2006-2-2 U>{z*D
* @version 1.0 8L<Ol
*/ Mbi)mybM
public class HeapSort implements SortUtil.Sort{ BO1Mz=q
zIlQqyOQ8
/* (non-Javadoc) 3n,F5?!m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q2+e`
*/ }?H |9OS
public void sort(int[] data) { (llg!1
MaxHeap h=new MaxHeap(); Wx^L~[l
h.init(data); 0uj3kr?cv
for(int i=0;i h.remove(); U/TF,JUI
System.arraycopy(h.queue,1,data,0,data.length); 05w_/l+
} Q.!D2RZc
mH;\z;lyK
private static class MaxHeap{ C7nLa@
j{nL33T%
void init(int[] data){ VRT| OUq
this.queue=new int[data.length+1]; JH2d+8O:qK
for(int i=0;i queue[++size]=data; RU@`+6j+
fixUp(size); ]r|X[9
} >8QLo8)3C
} teET nz_L
MvQ0"-ZQ
private int size=0; B1\}'g8%f
l].dOso$`
private int[] queue; g
}5lGz4
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public int get() { P)Sw`^d
return queue[1]; >+&524xc
} EdLbVrN,
<AzvVSA,
public void remove() { <&Y7Q[
SortUtil.swap(queue,1,size--); Ij4oH
fixDown(1); 6>zO"9
} IL&Mf9m
file://fixdown M"1}"ex#
private void fixDown(int k) { m{;2!
int j; w8c71C
while ((j = k << 1) <= size) { ZI}7#K<9X
if (j < size %26amp;%26amp; queue[j] j++; ]w"r4HlCx
if (queue[k]>queue[j]) file://不用交换 6gNsh
break; Il,2^54q
SortUtil.swap(queue,j,k); QT&2&#Z
k = j; '0lX;z1
}
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} %;~Vc{Xxt/
private void fixUp(int k) { (~#{{Ja
while (k > 1) { Etj@wy/E
int j = k >> 1; ,eW K~ pa
if (queue[j]>queue[k]) V+(1U|@~
break; Il `35~a
SortUtil.swap(queue,j,k); <Y9%oJn%
k = j; ">@]{e*
} 'H0uvvhOp
} Uf4A9$R.G
'pa[z5{k+
} Y{ijSOl3
\!x~FVA
} bbCH(fYbu
#rD0`[pz
SortUtil: HRn
Q*
>g+yw1nC
package org.rut.util.algorithm; 8iA[w-Pv
NwP!.
import org.rut.util.algorithm.support.BubbleSort; C-u'Me)H
import org.rut.util.algorithm.support.HeapSort; *t=8^q(K[
import org.rut.util.algorithm.support.ImprovedMergeSort; %Ya%R@b}
import org.rut.util.algorithm.support.ImprovedQuickSort; /N '0@q
import org.rut.util.algorithm.support.InsertSort; D~P3~^
import org.rut.util.algorithm.support.MergeSort; 69N/_V
import org.rut.util.algorithm.support.QuickSort; UTwXN |'|
import org.rut.util.algorithm.support.SelectionSort; <hkSbJF
import org.rut.util.algorithm.support.ShellSort; 1 etl:gcEC
",O |uL
/** -Y>,\VEK
* @author treeroot 1K{u>T
* @since 2006-2-2 1*U)\vK~
* @version 1.0 RGg=dN
*/ M$YU_RPl+
public class SortUtil { SbLm
public final static int INSERT = 1; -+ylJo[D
public final static int BUBBLE = 2; L)(JaZyV5
public final static int SELECTION = 3; ] MP*5U>;
public final static int SHELL = 4; yzyBr1s
public final static int QUICK = 5; Jt++3]
public final static int IMPROVED_QUICK = 6; Y=83r]%
public final static int MERGE = 7; 0{Uc/
public final static int IMPROVED_MERGE = 8; F+@/ "1c
public final static int HEAP = 9; RW-)({
T3wQ Rn
public static void sort(int[] data) { $|"Y|3&X
sort(data, IMPROVED_QUICK); aC90IJ8^
} OCW0$V6;D-
private static String[] name={ @6lw_E_5
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {{6D4M|s
}; U1ZKJ<pv
YuXCRw9p;
private static Sort[] impl=new Sort[]{ f`<elWgc"
new InsertSort(), C]EkVcKFA
new BubbleSort(), _"%hcCMw
new SelectionSort(), ^ YOCHXg
new ShellSort(), XQ3"+M_KG
new QuickSort(), JtvZ~s
new ImprovedQuickSort(), =cR"_ Z[8X
new MergeSort(), vmzc0J+3p
new ImprovedMergeSort(), DHq#beN
new HeapSort() ='vD4}"j
}; NiH =T
k=W~ot&
public static String toString(int algorithm){ nnOgmI7
return name[algorithm-1]; &t~NR$@
} $-)T
f@@7?5fW
public static void sort(int[] data, int algorithm) { Uiv4'vYg
impl[algorithm-1].sort(data); aPdEEqc\l
} de/oK c
bey:Qj??
public static interface Sort { B[.$<$}G
public void sort(int[] data); $d-$dM?R5
} ;Rlf[](iL
%9
3R/bx
public static void swap(int[] data, int i, int j) { 1Q_Q-Z
int temp = data; }_Ci3|G>%D
data = data[j]; ds9U9t
data[j] = temp; " Tk,
} {'Y()p3kl
} enx+,[