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。 =p+n(C/
插入排序: J~%43!X\K
L[<#>/NPy
package org.rut.util.algorithm.support; 8-#kY}d.
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import org.rut.util.algorithm.SortUtil; Avw=*ZW
/** ///Lg{ie
* @author treeroot Vn5T Jw
* @since 2006-2-2 7y$\|WG?!r
* @version 1.0 ((ebSu2-?$
*/ A}ZZQ
public class InsertSort implements SortUtil.Sort{ :k\#=u(
ULiRuN0 6
/* (non-Javadoc) K]|Ud No
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N3"Jo uP
*/ t7by OMC
public void sort(int[] data) { "$(+M t^
int temp; mx^Ga=:
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6R45+<.
} }AS?q?4?
} {+9RJmZg
} Y
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} :)1"yo\
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冒泡排序: }{R*pmv$bN
NQ`D"n
package org.rut.util.algorithm.support; ]5'$EAsuW
8 m"k3:e^
import org.rut.util.algorithm.SortUtil; 3(c-o0M
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/** CH6 m
* @author treeroot ?xR7Ii3
* @since 2006-2-2 ^m z9sV
* @version 1.0 ^fsMfB
*/ * zp tbZ
public class BubbleSort implements SortUtil.Sort{ UDEGQ^)Xz|
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I
/* (non-Javadoc) t"$~o:U&)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b`X''6
*/ m(8Tup|
public void sort(int[] data) { z>W:+W"o
int temp; %>FtA)
for(int i=0;i for(int j=data.length-1;j>i;j--){ IV,4BQ$
if(data[j] SortUtil.swap(data,j,j-1); Uxjc&o
} -leX|U}k
} Q]9$dr=Kk0
} r *K
} 6:5K?Yo
)R7Sh51P
} zamMlmls^
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选择排序: -'Z Gc8)
.I:rb~&
package org.rut.util.algorithm.support; CNN9a7
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import org.rut.util.algorithm.SortUtil; ?I=1T.
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/**
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* @author treeroot os5$(
* @since 2006-2-2 Vg'R=+Wb
* @version 1.0 NifQsy)*%
*/ <IR#W$[
public class SelectionSort implements SortUtil.Sort { e(7#>O%1
~A>fB2.pM
/* yz68g?"
* (non-Javadoc) j4IVIj@$`
* -+ByK#<%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j !*,(
*/ [oh06_rB
public void sort(int[] data) { zA5nr`
int temp; @bg9
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for (int i = 0; i < data.length; i++) { ?;,;
int lowIndex = i; h~>1-T8
for (int j = data.length - 1; j > i; j--) { aEN` `
if (data[j] < data[lowIndex]) { %O`@}Tg
lowIndex = j; m]jA(
} qA[lL(
} gBqDx|G
SortUtil.swap(data,i,lowIndex); ?L }>9$"
} rDFrreQP
} W_B=}lP@x
g@#he95 }
} +RJ{)Nec
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Shell排序: W'4/cO
l>\EkUT
package org.rut.util.algorithm.support; ^$ Y9.IH"
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import org.rut.util.algorithm.SortUtil; ]r;rAOWVV
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/** lgews"
* @author treeroot WX4sTxJK
* @since 2006-2-2 kgo#JY-4
* @version 1.0 >SXSrXyYX
*/ k>ErDv8
public class ShellSort implements SortUtil.Sort{ _9>,9aL
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/* (non-Javadoc) SRfh{u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [~N;d9H+*1
*/ =RWTjTZ
public void sort(int[] data) { W^iK9|[qp
for(int i=data.length/2;i>2;i/=2){ &%fcGNzJQ
for(int j=0;j insertSort(data,j,i); CA#g(SiZ
} ^{"i eVn
} eC5*Q=ai,
insertSort(data,0,1); p-$C*0{
} z)T-<zWO;
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/** {\5(aQ)Vi5
* @param data [ K?
* @param j StJb-K/_cL
* @param i -`'|z+V
*/ 8;gi8Y
private void insertSort(int[] data, int start, int inc) { 4<[?qd3v=
int temp; ;
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4r$#-
} oB 1Qw'J
w
} w>2lG3H<
} ]y{tMC
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D
} IRg2\Hq
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快速排序: $^Xxn.B9
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package org.rut.util.algorithm.support; e]1=&:eX#d
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import org.rut.util.algorithm.SortUtil; kZF]BPh.
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/** p&Qb&nWk<
* @author treeroot .OJGo<#$f
* @since 2006-2-2 0se%|Z|8
* @version 1.0 F/2cQ.u2
*/ q]{gAGe~
public class QuickSort implements SortUtil.Sort{ <~mqb=qA$
@_`r*Tb)dM
/* (non-Javadoc) "[ LUv5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A}Iyl
*/ <lB2Nv-,
public void sort(int[] data) { %uo8z~+
quickSort(data,0,data.length-1); j#f/M3
} 6Y2,fW8i,
private void quickSort(int[] data,int i,int j){ )?[2Y%P
int pivotIndex=(i+j)/2; "1s ]74
file://swap )FwOg;=3M"
SortUtil.swap(data,pivotIndex,j); 9we];RYK
w}1IP-
int k=partition(data,i-1,j,data[j]); <l1/lm<#
SortUtil.swap(data,k,j); `:lcN0n
if((k-i)>1) quickSort(data,i,k-1); 7Q/H+)
if((j-k)>1) quickSort(data,k+1,j); \y7?w*K
k$v7@|Aw
} Qb@j8Xa4[
/** 2- L-=0
* @param data HJr/N)d
* @param i bpsyO>lx/
* @param j G5qsnTxUJ
* @return Lx-%y'P
*/ 8nI~iN?"
private int partition(int[] data, int l, int r,int pivot) { rv[BL.qV
do{ O5du3[2x7a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m LajiZ Bf
SortUtil.swap(data,l,r); rX$-K\4W
} R}Zaz3( Hd
while(l SortUtil.swap(data,l,r); ANPG3^w
return l; ]yKwH 9sl
} wp:$Tq a$
8TYh&n=r
} KeyKLkg>
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改进后的快速排序: 0iSNom}m
Vc'p+e|(
package org.rut.util.algorithm.support; [%>*P~6nK
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import org.rut.util.algorithm.SortUtil; 7eq.UyUxs
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/** CH+%q+I
* @author treeroot TJP;!uX
* @since 2006-2-2 7h9oY<W
* @version 1.0 T2-x 1Sw_
*/ ?Ho$fGz
public class ImprovedQuickSort implements SortUtil.Sort { fXevr `
h`fZ8|yw
private static int MAX_STACK_SIZE=4096; RCqL~7C+ k
private static int THRESHOLD=10; 3Dc^lfn
/* (non-Javadoc) ~@@t-QY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F@/syX;bb5
*/ -T+yS BO_3
public void sort(int[] data) { J>dj]1I
int[] stack=new int[MAX_STACK_SIZE]; e77s?WxbK
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int top=-1; H?opG<R=ek
int pivot; fx 0 8>r
int pivotIndex,l,r; ZHen:
zX=%BL?
stack[++top]=0; :8n?G
stack[++top]=data.length-1; )FB<gCh7X
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while(top>0){ Iy5W/QK6
int j=stack[top--]; ~i^,Z&X:
int i=stack[top--]; xG~-.
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pivotIndex=(i+j)/2; Wm8BhO
pivot=data[pivotIndex]; j5Yli6r?3-
q&ed4{H<
SortUtil.swap(data,pivotIndex,j); EHe-wC
f].z.
file://partition PmId #2f
l=i-1; a[^dK-
r=j; F`Vp
do{ Zo-Au
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zh !/24p9
SortUtil.swap(data,l,r); JmF`5
} J!rZskd
while(l SortUtil.swap(data,l,r); -NG9?sI\U
SortUtil.swap(data,l,j); EI9Yv>7 d{
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if((l-i)>THRESHOLD){ ^1}ffE(3>
stack[++top]=i; +&AU&2As
stack[++top]=l-1; u@wQ )^
} x2i`$iNhmP
if((j-l)>THRESHOLD){ Fo"'[`
stack[++top]=l+1; 0A~f
^
stack[++top]=j; YS"76FJ
} Rx<[bohio
$AFiPH9
} e ]>{?Z
file://new InsertSort().sort(data); u*;53 43
insertSort(data); "2"*3R<Y
} )fZ5.W8UE]
/** JvUHoc$sI
* @param data Us9$,(3
*/ BJ/#V)
private void insertSort(int[] data) { 9.goO|~B~
int temp; OQX ek@~2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;+qPV7Z
} Pb D|7IM
} qj|B #dU
} E{9{%J
A%M&{S'+|X
} QQjMC'
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归并排序: ldoN!J
~w%Z Bp
package org.rut.util.algorithm.support; ,v1-y
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import org.rut.util.algorithm.SortUtil; VA'<
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/** o9HDxS$~^
* @author treeroot HNoh B4vt
* @since 2006-2-2 7]9s_13]
* @version 1.0 e$(i!G)
*/ 7 -V_)FK2c
public class MergeSort implements SortUtil.Sort{ f4T-=` SO
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/* (non-Javadoc) S+OI?QS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ")M.p_b[Z=
*/ u=
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public void sort(int[] data) { !c`Q?aGV)
int[] temp=new int[data.length]; !r!Mq~X<=
mergeSort(data,temp,0,data.length-1); 7!N5uR
} CM's6qhQnn
)@`w^\E_~_
private void mergeSort(int[] data,int[] temp,int l,int r){ 1y8:tri>N
int mid=(l+r)/2; tT#Q`cB
if(l==r) return ; \ZDT=?
mergeSort(data,temp,l,mid); &FvNz
mergeSort(data,temp,mid+1,r); lB\j>.c
for(int i=l;i<=r;i++){ Y.*lO
temp=data; Q}Vho.N@=
} !%M-w0vC9
int i1=l; 1aMBCh<}JN
int i2=mid+1; |QgXSe7
for(int cur=l;cur<=r;cur++){ ;%z0iZmg
if(i1==mid+1) R;V(D3
data[cur]=temp[i2++]; 5BCaE)J
else if(i2>r) 'Jl.fN
data[cur]=temp[i1++]; s3kEux^
else if(temp[i1] data[cur]=temp[i1++]; mg,f> (
else .y2<2eW
data[cur]=temp[i2++]; }>XSp)"{l
} (&hX8
} 7<:w-
(1}Ndo^;w
} ?h3Ow`1G
m<f{7]fi5
改进后的归并排序: d<b,LD^
E:E&Wv?r
package org.rut.util.algorithm.support; yRi/YR#
# nYGKZ
import org.rut.util.algorithm.SortUtil; /eMZTh*1P
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/** jh0$:6 `C
* @author treeroot X9gC2iSs]
* @since 2006-2-2 Z "=(uwM
* @version 1.0 #"yf^*wX
*/ 7ER 2h*
public class ImprovedMergeSort implements SortUtil.Sort { ?Ru`ma\;
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private static final int THRESHOLD = 10; qL+y8*
d=KOV;~);
/* *nW9)T
* (non-Javadoc) 8k`zMT
* R39R$\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KE&}*Nf[
*/ G-^ccdT
public void sort(int[] data) { W=\dsdnu*
int[] temp=new int[data.length]; _TXV{<E6
mergeSort(data,temp,0,data.length-1); omA*XXUx=8
} `U3
E\*",MGL
private void mergeSort(int[] data, int[] temp, int l, int r) { 9cmJD5OO
int i, j, k; +?:V\niQI
int mid = (l + r) / 2; \
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if (l == r) PC_4#6^5
return; &"h!SkX/
if ((mid - l) >= THRESHOLD) ,<
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mergeSort(data, temp, l, mid); uWInx6p
else rpT<cCem1
insertSort(data, l, mid - l + 1); N]<gHGj}
if ((r - mid) > THRESHOLD) XfrnM^oty
mergeSort(data, temp, mid + 1, r); _dBU6U:V
else ~&/Gx_KU
insertSort(data, mid + 1, r - mid); _z 5CplO
C|zH {.H
for (i = l; i <= mid; i++) { %Nn'p"
temp = data; !m|%4/
M@
} [;f"',)y,
for (j = 1; j <= r - mid; j++) { e`Yns$x
temp[r - j + 1] = data[j + mid]; 8)!;[G|
} ,7g;r_qwA
int a = temp[l]; m8PB2h
int b = temp[r]; y4L9Cxvs
for (i = l, j = r, k = l; k <= r; k++) { NFc8"7Mz}
if (a < b) { a!K;8#xc
data[k] = temp[i++]; \-0` %k"&
a = temp; rw2|1_AF
} else { DS2$ w9!
data[k] = temp[j--]; L>b,}w
b = temp[j]; "y0A<-~
} 9.=#4OH/
} 8W>l(w9M
} dSZ#,Ea"
//@=Q!MW
/** X8x>oV;8
* @param data 7$=@q|$
* @param l +3>4 ?,^g
* @param i ;LE
@Ezx
*/ fdG.=7`
private void insertSort(int[] data, int start, int len) { 6I#DlAU@v
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $IT9@}*{
} wcf_5T
} ACYn87tq
} ;alFK*K6
} FO=1P7
m_ m@>}ud
堆排序: OP}p;(
\AzcW;03g[
package org.rut.util.algorithm.support; AyO|9!F@A
_[o^23Hj
import org.rut.util.algorithm.SortUtil; K:@=W1
I}IW!K
/** 2QRn
c"
* @author treeroot |=T<WU1$
* @since 2006-2-2 q*nz4QTOE
* @version 1.0 W@dY:N}
*/ UJ$:5*S=u
public class HeapSort implements SortUtil.Sort{ T6roz
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/* (non-Javadoc) G9inNz*Cx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yWtr,
*/ u(Sz$eV
public void sort(int[] data) { a?~csP^?}
MaxHeap h=new MaxHeap(); ONiI:Z>%
h.init(data); z44~5J]
for(int i=0;i h.remove(); o~&!M_ED
System.arraycopy(h.queue,1,data,0,data.length); 3&fFIab9
} /*^|5>-`i1
Z;\"pP:
private static class MaxHeap{ 6ya87H'e@
<@2# VG
void init(int[] data){ f;H#TSJ
this.queue=new int[data.length+1]; Wb)l8[=
for(int i=0;i queue[++size]=data; ;w(1Ydo
fixUp(size); D])YP0|}
} >? eTbtP
} Pm(:M:a
uE`|0
private int size=0; :$c:3~
'2$!thm
private int[] queue; DF|s,J`98
zn1Rou]6
public int get() { WcO,4:
return queue[1]; ;;hyjFGq%
} t`ceVS
"ak9LZQ9z
public void remove() { 5qkuKF
SortUtil.swap(queue,1,size--); lV6[d8P
fixDown(1); 0uO=wOIhH
} WAXts]=
file://fixdown m<"fRT!Y
private void fixDown(int k) { RLOQ>vYY
int j; yUmsE-W
while ((j = k << 1) <= size) { ]~S+nlyd<
if (j < size %26amp;%26amp; queue[j] j++; tlLn
if (queue[k]>queue[j]) file://不用交换 )z235}P
break; {a8^6dm*E
SortUtil.swap(queue,j,k); ]j2v"n
k = j; Pph8"`mv.m
} i6#]$ B
} T)
tZU?
private void fixUp(int k) { ;GFB@I@
while (k > 1) { s[2ZxCrCw
int j = k >> 1;
)1nCw
if (queue[j]>queue[k]) #3yw
break; 83ic@[
SortUtil.swap(queue,j,k); S50x0$%<W
k = j; I
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} h`h>H
X
} k7|z$=zY
0O,T=z[+>
} oA;Ty7s
^h6$>n5
} 1~5q:X
H4'DL'83
SortUtil: ''OInfd?
wYO"znd
package org.rut.util.algorithm; b}Hl$V(uD
1m<?Q&|m$
import org.rut.util.algorithm.support.BubbleSort; !H|82:`t+
import org.rut.util.algorithm.support.HeapSort; Ryba[Fz4Di
import org.rut.util.algorithm.support.ImprovedMergeSort; Hn9F
gul&
import org.rut.util.algorithm.support.ImprovedQuickSort; h>Uid
&:?
import org.rut.util.algorithm.support.InsertSort; vo6[2.HS
import org.rut.util.algorithm.support.MergeSort; .d~]e2x
import org.rut.util.algorithm.support.QuickSort; V l~Y
import org.rut.util.algorithm.support.SelectionSort; C7 ]DJn
import org.rut.util.algorithm.support.ShellSort; F\=Rm
Ep\
/** k/_8!^:'
* @author treeroot |[owNV>
* @since 2006-2-2 7XVzd]jH
* @version 1.0 ocl47)
*/ >PJtG]D
public class SortUtil { {#1j"
public final static int INSERT = 1; 2'<=H76
public final static int BUBBLE = 2; De
nt?
public final static int SELECTION = 3; Awa|rIM
public final static int SHELL = 4; |v$%V#Bo
public final static int QUICK = 5; \YlF>{LVe
public final static int IMPROVED_QUICK = 6; -M:hlwha
public final static int MERGE = 7; 71l"m^Z3zy
public final static int IMPROVED_MERGE = 8; MzR1<W{ O
public final static int HEAP = 9; wHOlj)CZ
o\]:!#r{T
public static void sort(int[] data) { HLSfoQ&)v
sort(data, IMPROVED_QUICK); juCG?}di;
} XnE
%$NJ
private static String[] name={ 9jMC|oE
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
H\=LE
}; LGo2^Xx
6i]Nr@1C
private static Sort[] impl=new Sort[]{ k~1j/VHv
new InsertSort(), oT|P1t.
new BubbleSort(), j(%gMVu
new SelectionSort(), 'z-;* !A}j
new ShellSort(), L`jB)wF/J
new QuickSort(), aI={,\
new ImprovedQuickSort(), $K?T=a;z
new MergeSort(), )pjjW"C+
new ImprovedMergeSort(), lHcZi
new HeapSort() WXLe,7y
}; {}g %"mi#
Z(Eke
public static String toString(int algorithm){ N4a`8dS|
return name[algorithm-1]; Z#4JA/c!
}
coF T2Pq
% QPWw~}:
public static void sort(int[] data, int algorithm) { BEXQTM3])I
impl[algorithm-1].sort(data); h"u<E\g
} 'T )Or,d
m%oGzx+
public static interface Sort { C{UF~
public void sort(int[] data); Q(IJD4
} C#Hcv*D
~5r=FF6
public static void swap(int[] data, int i, int j) { I(OAEIz
int temp = data; QN_)3lm
data = data[j]; aJ:A%+1
data[j] = temp; Xr?>uqY!M
} ='dLsh4P2N
} 3:[!t%Yb