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。 B9%%jEH*
插入排序: YBR)S_C$_
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package org.rut.util.algorithm.support; FFN Sn
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import org.rut.util.algorithm.SortUtil; &]shBvzl^
/** cbs ;
* @author treeroot 3:xKq4?
* @since 2006-2-2 |I29m`
* @version 1.0 `j!_tE`
*/ f=u +G
public class InsertSort implements SortUtil.Sort{ ]>Gi_20*.
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/* (non-Javadoc) es~1@Jb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _zi| GD
*/ @65xn)CD{
public void sort(int[] data) { >EZZEd
int temp; 4nQ5zwiV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9qgs*]J
} MLg{Y?@
} z[myf]@
} 9%"`9j~H>
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} {?2|rv)
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冒泡排序: z
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package org.rut.util.algorithm.support; {$i>\)
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import org.rut.util.algorithm.SortUtil; oif|X7H;
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/** G--(Ef%v'
* @author treeroot 4y?n62N8$
* @since 2006-2-2 ] $r].,&
* @version 1.0 ",J&UTUh
*/ LME&qKe5
public class BubbleSort implements SortUtil.Sort{ \E<Qi3W>*
VJT /9O)Z|
/* (non-Javadoc) sQ,xTWdj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @"1Z;.S8V
*/ '`.-75T
public void sort(int[] data) { /<IWdy]$3
int temp; dJ Q K|/
for(int i=0;i for(int j=data.length-1;j>i;j--){ eEP{?F^I[
if(data[j] SortUtil.swap(data,j,j-1); UnP<`z#
} P}UxA!
} HLG5SS7
} NN1}P'6Ha
} qNP)oU92
*Egg*2P;"Q
} cL~WDW/
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选择排序: s%`l>#H
EU%v
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package org.rut.util.algorithm.support; ]+3M\ ib
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import org.rut.util.algorithm.SortUtil; ~<9e}J
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/** ~;H,cPvrEg
* @author treeroot (=;'>*L(
* @since 2006-2-2 1iLo$
* @version 1.0 .5o~^
*/ |N%
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public class SelectionSort implements SortUtil.Sort { 5N%d Les
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/* oe2*$\?.
* (non-Javadoc) 'j,
([
* TK[[6IB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s(5hFuyg
*/ fRLA;1va
public void sort(int[] data) { W&R67ff|
int temp; :r hB=
for (int i = 0; i < data.length; i++) { ng9e)lU~*b
int lowIndex = i; 1/w8'Kf'u
for (int j = data.length - 1; j > i; j--) { fW+"Kuw
if (data[j] < data[lowIndex]) { w43b=7
lowIndex = j; .'_}:~
} d~%7A5
} dVj2x-R)
SortUtil.swap(data,i,lowIndex); cnQ2/ZZp~
} `N.:3]B
t
} D6Aa5&rO+
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} .24z+|j
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Shell排序: gjN'D!'E1D
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package org.rut.util.algorithm.support; %sOY:>
k)*apc\W
import org.rut.util.algorithm.SortUtil; =Q<7[
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/** *->*p35
* @author treeroot >.`*KQdan
* @since 2006-2-2 0Atha>w^o~
* @version 1.0 gveJ1P
*/ k89N}MA
public class ShellSort implements SortUtil.Sort{ abUO3
Y{
IJ2'
/* (non-Javadoc) {TpbUj0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 76@W:L*J$J
*/ `G\Gk|4;2
public void sort(int[] data) { 0 {z8pNrc
for(int i=data.length/2;i>2;i/=2){ l`N#~<.
for(int j=0;j insertSort(data,j,i); %\sE \]K
} YCltS!k
} W0 sLMHq
insertSort(data,0,1); E9j<+Ik
} axvZA:l
ph6'(,
/** G6a 2]
* @param data /96lvn]8lO
* @param j dV
:}
* @param i \u[}
*/ 7AT8QC`u
private void insertSort(int[] data, int start, int inc) { }#ta3 x
int temp; IS(F_< .
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); QR"+fzOL
} 9G
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} 3\j`g
} >xS({1A}
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} bk<Rp84vL
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快速排序: c:.5@eq^
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package org.rut.util.algorithm.support; pIC'nO_
+vxf_*0;
import org.rut.util.algorithm.SortUtil; \)t//0
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/** sGhw23
* @author treeroot !nkIXgWz
* @since 2006-2-2 r/AOgS
* @version 1.0 ^0| :
*/ E7\K{]
public class QuickSort implements SortUtil.Sort{ >JE+g[$@
b5=|1SjR
/* (non-Javadoc) j#2Xw25
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }g-w[w 7p
*/ eo4z!@pRN
public void sort(int[] data) { $zCCeRP
quickSort(data,0,data.length-1); lAi5sN)|$
} P8X9bW~GQ
private void quickSort(int[] data,int i,int j){ 'pIrwA^6N
int pivotIndex=(i+j)/2; 4PxP*j
file://swap OXQA(%MK
SortUtil.swap(data,pivotIndex,j); }B7Txo,Z
ux1(>
int k=partition(data,i-1,j,data[j]); h'&<A_C-7
SortUtil.swap(data,k,j); ~%=%5}
if((k-i)>1) quickSort(data,i,k-1); W[Q<# Ju
if((j-k)>1) quickSort(data,k+1,j); T~/>U&k}J
GIEQD$vy
} & tT6.@kH
/** oX:&;KA
* @param data ZYWGP:Y
* @param i &v((tZ
* @param j i*:QbMb
* @return rbdrs
*/ @H#Fzoo.
private int partition(int[] data, int l, int r,int pivot) { ,}'8.
f
do{ oH0g>E;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QK6_dIvDz
SortUtil.swap(data,l,r); q1u$Sm
} GNv{Ij<
while(l SortUtil.swap(data,l,r); lBFKfLp&
return l; %8u9:Cl):
} #2U# h-vI
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} ]j:k!=Ss?
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改进后的快速排序: 0;><@{'
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package org.rut.util.algorithm.support; `mteU"{bx
+ho=0>
import org.rut.util.algorithm.SortUtil; Mo N/?VA
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/** )-[$m%
* @author treeroot \\:%++}J
* @since 2006-2-2 5`fUR/|[
* @version 1.0
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*/ vv,<#4d
public class ImprovedQuickSort implements SortUtil.Sort { QAxy?m,'
%XukiA+
private static int MAX_STACK_SIZE=4096; }(u:K}8
private static int THRESHOLD=10; PRiE2Di2S
/* (non-Javadoc) e.MyJ:eL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !5De?OXe
*/
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public void sort(int[] data) { #n+u>x.O
int[] stack=new int[MAX_STACK_SIZE]; iYT?6Y|+
)tJaw#Mih
int top=-1; !Ltx2CB2]
int pivot; )=}qAVO8
int pivotIndex,l,r; &aIFtlC
}G{"Mp4
stack[++top]=0; Rq+7&%dy
stack[++top]=data.length-1; BV@q@C
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while(top>0){ 7P3/Ky@6
int j=stack[top--]; .yfp-n4H
int i=stack[top--]; $s}w23nB
3AdYZ7J
pivotIndex=(i+j)/2; "ADI.
pivot=data[pivotIndex]; sS{Co8EJn
^wZx=kas
SortUtil.swap(data,pivotIndex,j); TC<Rg?&yb
6c^?DLy9B
file://partition e)?}2
l=i-1; +$L}B-F
r=j; $t& o(]m
do{ ]'%
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;Ngk"5
SortUtil.swap(data,l,r); OHAU@*[lM
} }X8P5c!\
while(l SortUtil.swap(data,l,r); #J/RI[a
SortUtil.swap(data,l,j); Ig!0A}f
EMe1!)
if((l-i)>THRESHOLD){ t=}]4&Yp
stack[++top]=i; rZ(#t{]=!
stack[++top]=l-1; .zdaY,
U
} ,S
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if((j-l)>THRESHOLD){ 6e \?%,H
stack[++top]=l+1; 1qAE)8ie
stack[++top]=j; <ivG(a*=]
} LyvR].p=5*
36co'a4,
} {_(R?V]w,
file://new InsertSort().sort(data); tH0x|
insertSort(data); ?QFxds
} "9[2vdSX
/** ,OwTi:yDr
* @param data b7^q(}qE
*/ H~JgZ pw
private void insertSort(int[] data) { +@fEw
int temp; :](#W@r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h`9 & :zr
} :+\sKEzL
} jcJ@A0]
} a8)2I~j
]Zh$9YK
} M __S)
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归并排序: w3
vZ}1|
1!)'dL0mI
package org.rut.util.algorithm.support; 4KxuSI^q
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import org.rut.util.algorithm.SortUtil; Jjj;v2uSK
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/** j|[$P4w}U
* @author treeroot 3r[F1z2B
* @since 2006-2-2 _nz_.w0H9
* @version 1.0 ,<P"\W
*/ yph@H!@
public class MergeSort implements SortUtil.Sort{ aJ=)5%$6kc
q0ab]g+
/* (non-Javadoc) cyd&bxPgj+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C=Fu1Hpb
*/ *wx%jbJo
public void sort(int[] data) { l%Ke>9C
int[] temp=new int[data.length]; R*cef
mergeSort(data,temp,0,data.length-1); W.{+0xx
} H~#$AD+H
U9PI#TX
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private void mergeSort(int[] data,int[] temp,int l,int r){ uAnL`
int mid=(l+r)/2; W!" $g
if(l==r) return ; @6~m&$R/
mergeSort(data,temp,l,mid); 8VU(+%X
mergeSort(data,temp,mid+1,r); ]Q.S Is
for(int i=l;i<=r;i++){ Sru0j/|H\
temp=data; *^{j!U37s
} d,i4WKp
int i1=l; fO5L[U^`
int i2=mid+1; ( -q0!]E
for(int cur=l;cur<=r;cur++){ $tW E9_
if(i1==mid+1) %}N01P|X>
data[cur]=temp[i2++]; y"Fu=
else if(i2>r) -0;{
data[cur]=temp[i1++]; !Y|xu07
else if(temp[i1] data[cur]=temp[i1++]; )R<93`q
else ,@p4HN*
data[cur]=temp[i2++]; 7~1Fy{tc
} a 01s'9Be
} 89 m.,
Z3wdk6%:}
} ^FNju/b
yRQ1Szbjli
改进后的归并排序: qh}+b^Wi
=v?V
package org.rut.util.algorithm.support; LdiNXyyzet
O+'k4
import org.rut.util.algorithm.SortUtil; @JdeOL;
3:$@DZT$
/** %kkDitmI{
* @author treeroot r&v!2A]:
* @since 2006-2-2 <x<qO=lq
* @version 1.0 J<"Z6 '0v
*/ &a\w+
public class ImprovedMergeSort implements SortUtil.Sort { &'/PEOu&}G
rcLF:gd]E
private static final int THRESHOLD = 10; +DefV,Ny
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/* B&KIM{j\
* (non-Javadoc) BUi,+NdIk
* Cv>~%<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h0 %M+g
*/ D=D.s)ns*
public void sort(int[] data) { }YC=q
int[] temp=new int[data.length]; w0yzC0yBk
mergeSort(data,temp,0,data.length-1); Xe`$SNM
} ^f(El(w
2Nm{.Y
private void mergeSort(int[] data, int[] temp, int l, int r) { P9`CW
int i, j, k; c?c"|.-<p
int mid = (l + r) / 2; x) %"i)
if (l == r) *<{hLf
return; &Nr+-$
if ((mid - l) >= THRESHOLD) 1p/_U?H:|
mergeSort(data, temp, l, mid); d"3x11|
else $*XTX?,'
insertSort(data, l, mid - l + 1); S:g6z'e1
if ((r - mid) > THRESHOLD) L1 k
mergeSort(data, temp, mid + 1, r); l%i*.b(
else -c0*
insertSort(data, mid + 1, r - mid); xjxX4_
Om7 '_}
for (i = l; i <= mid; i++) { E\Iz:ES^
temp = data; (Cti,g~
} ]-heG'y]{
for (j = 1; j <= r - mid; j++) { (yT&&_zY4
temp[r - j + 1] = data[j + mid]; h{~GzrL*
} NN:zQ_RT
int a = temp[l]; 2=7[r-*E
int b = temp[r]; :c}PW"0v
for (i = l, j = r, k = l; k <= r; k++) { h6`VU`pPI
if (a < b) { \Yv44*I`
data[k] = temp[i++]; |a\,([aU
a = temp; HmsXV_B8[Y
} else { @YS,)U)4S
data[k] = temp[j--]; RSM+si/
b = temp[j]; m\=Cw&(
} RWDPsZC
} H-m).^
} JNvgUb'U
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/** :IsJE6r
* @param data >*l2]3'`
* @param l YWANBM(v+
* @param i pNQ@aJ
*/ &=Y%4vq
private void insertSort(int[] data, int start, int len) { 5Tidb$L;Du
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fo9V&NE
} `J{{E,y
@
} h,fahbH-
} :Xx7':5
} -=u9>S)!c
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堆排序: ^}z:FI
.lz=MUR
package org.rut.util.algorithm.support; +).=}.k
>k}Kf1I
import org.rut.util.algorithm.SortUtil; }g 2l
ni
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/** *li5/=UC5*
* @author treeroot 0*uJS`se6Z
* @since 2006-2-2 ^zG!Z:E
* @version 1.0 IMy!8$\u
*/ "zIQ(|TL?d
public class HeapSort implements SortUtil.Sort{ )4YtdAV
6UPGE",u
/* (non-Javadoc) 6iH]N*]S^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Us>n`Lj@
*/ ]h=y
public void sort(int[] data) { :`@W`V?6-
MaxHeap h=new MaxHeap(); W3MH8z
h.init(data); V<n#%!M5gV
for(int i=0;i h.remove(); JJ_KfnH
System.arraycopy(h.queue,1,data,0,data.length); gp{Z]{io
} gi? wf
|Y+[_D}
private static class MaxHeap{ [Fd[(
*unJd"<*&@
void init(int[] data){ uy=<n5`oNG
this.queue=new int[data.length+1]; #D+.z)iZn
for(int i=0;i queue[++size]=data; ?/Aql_?3
fixUp(size); 4`"Q!T_'
} :|ytw=3>
} l2LO,j}
M!PK3
private int size=0; t |:XSJ9
Fow{-cs_p
private int[] queue; E3_ 5~>
~~,#<g[
public int get() { n4AQ
return queue[1]; ugW.nf*O
} @Y6~;(p
j6rwlwN
public void remove() { 3"6-X_
SortUtil.swap(queue,1,size--); R
<u\
-
fixDown(1); Xpmi(~n
} OZl0I#@A
file://fixdown !8J%%Ux&M
private void fixDown(int k) { yMb.~A^$J
int j; 8U-<Q>
while ((j = k << 1) <= size) { 8{Wh4~|+
if (j < size %26amp;%26amp; queue[j] j++; niCq`!
if (queue[k]>queue[j]) file://不用交换 sQ82(N7l
break; =XUt?5
SortUtil.swap(queue,j,k); myZ8LQ&
k = j; z-kB!~r
} !wjD6NK
} 8qq'q"g
private void fixUp(int k) { GYri\ <[
while (k > 1) { xC$CRzAe5p
int j = k >> 1; kx[h41|n
if (queue[j]>queue[k]) cvnRd.&
break; ^0"[l {
SortUtil.swap(queue,j,k); /gLi(Uw
k = j; Zu^J X/um
} EMS$?"K
} Y&*nj`n
`H|#l\
} [PU0!W;
'A#l$pJp7
} #_fL[j&
,09d"7`X
SortUtil: =Wl}Pgo!
fh}j)*K8
package org.rut.util.algorithm; |uln<nM9
H:L<gv(rG
import org.rut.util.algorithm.support.BubbleSort; =q*j". <
import org.rut.util.algorithm.support.HeapSort; v6KF0mqA&
import org.rut.util.algorithm.support.ImprovedMergeSort; *5S~@
import org.rut.util.algorithm.support.ImprovedQuickSort; nx`I9j\
import org.rut.util.algorithm.support.InsertSort; pGSS
import org.rut.util.algorithm.support.MergeSort; O<qo%fP
import org.rut.util.algorithm.support.QuickSort; 6y)NH 8l7
import org.rut.util.algorithm.support.SelectionSort; 5!d'RBO
import org.rut.util.algorithm.support.ShellSort; UxVxnJ_
h-RL`X
/** | <l=i(
* @author treeroot |jyoT%SQ
* @since 2006-2-2 gLPgh%B4
* @version 1.0 s4{ >7`N2
*/ +,ojlTVlt
public class SortUtil { vBjrI*0
public final static int INSERT = 1; wO ?A/s
public final static int BUBBLE = 2; ,qO2D_
public final static int SELECTION = 3; RE75TqYW
public final static int SHELL = 4; [>U =P`
public final static int QUICK = 5; NYp46;
public final static int IMPROVED_QUICK = 6; 3 n=ftkI
public final static int MERGE = 7; %u02KmV.
public final static int IMPROVED_MERGE = 8; 5Qgh\4
public final static int HEAP = 9; =LMM]'no,
97L#3L6t
public static void sort(int[] data) { ygfUy
sort(data, IMPROVED_QUICK); R8<P}mv
} 5IiZnGu
private static String[] name={ 6.gk6
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dgM@|&9*m
}; 4z> SI\Ss
924a1
private static Sort[] impl=new Sort[]{ H)O I&?
new InsertSort(), q <Zza
new BubbleSort(), k'JfXrW<!
new SelectionSort(), =-|,v*
new ShellSort(), O4fl$egQU
new QuickSort(), *.F4?i2D
new ImprovedQuickSort(), use`
y^c
new MergeSort(), ptEChoZ6
new ImprovedMergeSort(), h1.<\GO
new HeapSort() #=\ nuT'oy
}; /#I~iYPe
uiIS4S_
public static String toString(int algorithm){ L9":=
return name[algorithm-1]; _iZ_.3Ip
} ky-9I<Z,,
r5S5;jL%t
public static void sort(int[] data, int algorithm) { Z1ZjQt#~+
impl[algorithm-1].sort(data); hTVA^j(w
} r;cILS|Xr
79O'S du@
public static interface Sort { VgyY7INx9
public void sort(int[] data); <mX EX`?
} Tg~SGAc
p? L*vcU
public static void swap(int[] data, int i, int j) { wPrqFpf
int temp = data; Kk9W=vd
data = data[j]; 5'zD}[2
data[j] = temp; C6{\^kG^j2
} UY$Lqe~
} ZF~@a+o