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。 d"4J)+q
插入排序: :k.C|V!W
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package org.rut.util.algorithm.support; D|R,$v:
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import org.rut.util.algorithm.SortUtil; g6 T /k7a
/** 1W2hd!J7C
* @author treeroot {nlqQ.jO
* @since 2006-2-2 ){{]3r
* @version 1.0 Snf1vH
*/ sa>}wz<o
public class InsertSort implements SortUtil.Sort{ ZU-vZD>
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/* (non-Javadoc) vL:tuEE3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hb{G
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*/ 4XL]~3 c
public void sort(int[] data) { ZQPv@6+oY
int temp; X`FFI6pb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v %fRq!~
} LZG~1tf
} #}{1>g{sXt
} _3?7iH
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} yzQ^KqLH
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冒泡排序: 34\:1z+s M
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package org.rut.util.algorithm.support; {Deg1V!x>
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import org.rut.util.algorithm.SortUtil; $x%VUms
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/** LxC"j1wfl
* @author treeroot F(Iq8DV
* @since 2006-2-2 r % ]^(
* @version 1.0 6~j.S
"
*/ JQ.w6aE
public class BubbleSort implements SortUtil.Sort{ QX j4cg
w$5#jJX\
/* (non-Javadoc) zf>r@>S!L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }TS4D={1
*/ ?3
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public void sort(int[] data) { tv1Z%Mx?Cp
int temp; =8F]cW'1`
for(int i=0;i for(int j=data.length-1;j>i;j--){ QjlwT 2o'
if(data[j] SortUtil.swap(data,j,j-1); qc-4;m o
} 3bp'UEF^k
} oAgO3x
} d;D8$q)8Q
}
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pK~K>8\
} Kqt,sJ
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选择排序: KvrcO#-sL
^SouA[
package org.rut.util.algorithm.support; 1Gojuey
#D-L>7,jA
import org.rut.util.algorithm.SortUtil; qs]7S^yw
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/** C r~!N|(
* @author treeroot ,!RbFME&H
* @since 2006-2-2 P|OjtI
* @version 1.0 ,^UNQO*{GI
*/ `/mcjKQ&9y
public class SelectionSort implements SortUtil.Sort { M)oy3y^&
!?7c2QRN
/* _bO4s#yI
* (non-Javadoc) IW.~I,!x
* =A,6KY=E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]`2=<n;=
*/ 62 biOea
public void sort(int[] data) { u-a* fT
int temp; :/kz*X=<
for (int i = 0; i < data.length; i++) { c?NXX&
int lowIndex = i; 2Rp5 E^s
for (int j = data.length - 1; j > i; j--) { .7*3V6h =F
if (data[j] < data[lowIndex]) { ~fE6g3
lowIndex = j; 6^]Y])
} BQol>VRu
} prC1<rm
SortUtil.swap(data,i,lowIndex); }!-K )j .
} C>vp
oCA
} :Sx!jx>W
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} av&4:O!
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Shell排序: D4x~Vk%H
wh\J)pA1
package org.rut.util.algorithm.support; $~V,.RD
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import org.rut.util.algorithm.SortUtil; Rmrv@.dr!
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/** P-?ya!@"
* @author treeroot y/ #{pyJ
* @since 2006-2-2 *jps}uk<
* @version 1.0 RfMrGC^?
*/ (P-Bmu!s
public class ShellSort implements SortUtil.Sort{ {:VUu?5-t;
j#TtY|Po
/* (non-Javadoc) +K3SAGm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /=zzym~<>
*/ S?bG U8R5
public void sort(int[] data) { Zjz< Q-
for(int i=data.length/2;i>2;i/=2){ do2~LmeW
for(int j=0;j insertSort(data,j,i); N|v3a>;*l
} n_Ht{2I
} /N`l
z>^~
insertSort(data,0,1); TS9=A1J#
} i9.~cnk
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/** Gu-*@C:^&
* @param data yB&+2
* @param j mr+J#
* @param i ydCVG,"
*/ \(PC#H%
private void insertSort(int[] data, int start, int inc) { =dyApR:'
int temp; tp='PG.6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *uAsKU
} wL'tGAv
} Y!VYD_'P
} O'~c;vBI
JCu3,O!q
} zW`$T88~
:HrD[KT
快速排序: v(vLk\K7
l:O6`2Z
package org.rut.util.algorithm.support; gHLBtl/
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import org.rut.util.algorithm.SortUtil; N`tBDl"ld
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/** @_tQ:U,v
* @author treeroot cSYW)c|t
* @since 2006-2-2 }t tiL
* @version 1.0 [TAW68f'
*/ ,O@xv
public class QuickSort implements SortUtil.Sort{ =_%i5]89P
8]6u]3q#
/* (non-Javadoc) EK^B=)q6:W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;- D1n
*/ 9]AiaV9
public void sort(int[] data) { biCX:m+_?
quickSort(data,0,data.length-1); 3Zm'09A-.
} _c=[P@
private void quickSort(int[] data,int i,int j){ h&3*O[`
int pivotIndex=(i+j)/2; Ex'6 WN~kD
file://swap gO*:<B g
SortUtil.swap(data,pivotIndex,j); v$R+5_@[l
FhZ^/= As
int k=partition(data,i-1,j,data[j]); as1ZLfN.
SortUtil.swap(data,k,j); (nk)'ur.
if((k-i)>1) quickSort(data,i,k-1); D-7PO3F:F
if((j-k)>1) quickSort(data,k+1,j); oT7=
SbNs#
} 6&o9mc\I
/** "HRoS#|\
* @param data
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* @param i M{U {iS
* @param j Ih*}1D)7
* @return ;$|[z<1RdW
*/ wN [mU
private int partition(int[] data, int l, int r,int pivot) { ;2||g8'
do{ -c-#1_X5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); '-sAi
SortUtil.swap(data,l,r); En:.U9?X
} gC81ICM
while(l SortUtil.swap(data,l,r); \ltA&}!
return l; ~$1Zw&X
} -@49Zh2'
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} 4\)"Ih
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改进后的快速排序:
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S^,1N4
package org.rut.util.algorithm.support; I#0WN
W+3ZuAP\n
import org.rut.util.algorithm.SortUtil; FgIL Q"+
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/** 5!2^|y4r
* @author treeroot *Mf;
* @since 2006-2-2 oVPtA@
* @version 1.0 +u1meh3u
*/ kG:,Ff>
public class ImprovedQuickSort implements SortUtil.Sort { =%,;=4w
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private static int MAX_STACK_SIZE=4096; !xs.[&u8
private static int THRESHOLD=10; Qp{gV Ys
/* (non-Javadoc) gxEa?QH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s;'XX}Y
*/ CmaV>
public void sort(int[] data) { ]:CU.M1
int[] stack=new int[MAX_STACK_SIZE]; 8(R%?>8
>}#h
int top=-1; &61;v@
int pivot; 7Y$#*
7
int pivotIndex,l,r; BJI}gm2y
w%=GdA=
stack[++top]=0; mzufl:-=
stack[++top]=data.length-1; *')g}2iB
c\i`=>%b@
while(top>0){ #J.v[bOWQ
int j=stack[top--]; Ha l,%W~e
int i=stack[top--]; mQmn &:R
!8q+W`{
pivotIndex=(i+j)/2; )clSW
pivot=data[pivotIndex]; H"|xG;cf
82%~WQnS
SortUtil.swap(data,pivotIndex,j); #s JE{Tb
P-9[,3Zd
file://partition 3$Ew55
l=i-1; "(y",!U@
r=j; 6X(Yv2X&4%
do{ 1JIL6w_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +0U{CmH
SortUtil.swap(data,l,r); zk8 o[4
} KlMrM% ;y
while(l SortUtil.swap(data,l,r); %}
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SortUtil.swap(data,l,j); y2k'^zE
-.A%c(|Q
if((l-i)>THRESHOLD){ P(I`^x
stack[++top]=i; 5~T`R~Uqb
stack[++top]=l-1; BKDs3?&
} {9sA'5
if((j-l)>THRESHOLD){ )Lht}I ]:
stack[++top]=l+1; I`"8}d@Jm
stack[++top]=j; J+f
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} rj qX|
Ju3-ZFUS4
} J(*qOGBD
file://new InsertSort().sort(data); aY 8"Sw|4
insertSort(data); l2uh"!
} (vm&&a@
/** fMe "r*SU
* @param data !'>(r K$
*/ DA)+)PhY7K
private void insertSort(int[] data) { }} cz95
int temp; E~?0Yrm F
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "dfq
} ,]?Xf>
} H.EgL@;mb
} :USN`"
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} 12 HBq8o
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归并排序: }qy,/<R
d (Ufj|;
package org.rut.util.algorithm.support; 85;
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import org.rut.util.algorithm.SortUtil; M,]C(f>
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/** 8hWBTUN
* @author treeroot }
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* @since 2006-2-2 `>CHE'_
* @version 1.0 fl| 8#\r
*/ m1@ste;$W
public class MergeSort implements SortUtil.Sort{ dz
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/* (non-Javadoc) RAMkTS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x)eYqH~i
*/ ,KvF:xqA
public void sort(int[] data) { Uc,D&Og
int[] temp=new int[data.length]; 6^U8Utx
mergeSort(data,temp,0,data.length-1); _DPWp,k<~
} ylm*a74-X
i
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private void mergeSort(int[] data,int[] temp,int l,int r){ n%;wQ^
int mid=(l+r)/2; c$?(zt;
if(l==r) return ; tins.D
mergeSort(data,temp,l,mid); W- Q:G=S-
mergeSort(data,temp,mid+1,r); #m_3ls}W$
for(int i=l;i<=r;i++){ _t<D~
temp=data; qzk/P1{-
} A4RA5N/}
int i1=l; 61|uvTX
int i2=mid+1; Kx.'^y
for(int cur=l;cur<=r;cur++){ ]h4^3
if(i1==mid+1) :;[pl|}tM
data[cur]=temp[i2++]; _ndc^OG
else if(i2>r) ZH8O%>!
data[cur]=temp[i1++]; V<~.:G$3H
else if(temp[i1] data[cur]=temp[i1++]; <<#-IsT
else _'9("m V
data[cur]=temp[i2++]; OO?d[7Wt0
} =O= 0 D
} :s8^nEK
oej5bAi
} \lj.vzD-A
r*#ApM"L
改进后的归并排序: V1Yab#
:1h1+b@,
package org.rut.util.algorithm.support; ~R7F[R
SMHQo/c r
import org.rut.util.algorithm.SortUtil; oRl~x^[%[-
[JAHPy=+w
/** >TSPEvWc
* @author treeroot 6&8 ([J
* @since 2006-2-2 yuyI)ebC
* @version 1.0 `#O%ZZ+
*/ ML6Y_|6
|
public class ImprovedMergeSort implements SortUtil.Sort { H;('h#=cD
kev|AU (WX
private static final int THRESHOLD = 10; 6H+'ezM
Rf *we+
/* RTN?[`
* (non-Javadoc) l1 (6*+
* 0vN <0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zrt \]h+
*/ o+UCu`7e
public void sort(int[] data) { +O`3eP`u
int[] temp=new int[data.length]; <a9<rF =r
mergeSort(data,temp,0,data.length-1); L%G/%*7;c
} VyQ@. Lm
8K: RoR
private void mergeSort(int[] data, int[] temp, int l, int r) { }DH3_M!
int i, j, k; Cjh0 .{
int mid = (l + r) / 2; a!UQ]prT
if (l == r) [
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return; y $,K^f
if ((mid - l) >= THRESHOLD) = MQpYX
mergeSort(data, temp, l, mid); )xJCH9h
else kKbq?}W[
insertSort(data, l, mid - l + 1); Z>=IP-,>
if ((r - mid) > THRESHOLD) 1'.SHY|
mergeSort(data, temp, mid + 1, r); +Sz%2Q
else t8vR9]n
insertSort(data, mid + 1, r - mid); iuxI$
l%vX$Kw
for (i = l; i <= mid; i++) { Ir%L%MuR]
temp = data; F@m]Imn5Dx
} O&DkB*-
for (j = 1; j <= r - mid; j++) { iBCZx>![;
temp[r - j + 1] = data[j + mid]; 6T-h("t
} ]=X6*
E*/E
int a = temp[l]; s98Jh(~
int b = temp[r]; ;#'YO1`gf3
for (i = l, j = r, k = l; k <= r; k++) { L`sg60z
if (a < b) { Po(Y',xI[
data[k] = temp[i++]; ug?gVK
a = temp; UoDS)(i
} else { A0mj!P 9
data[k] = temp[j--]; 6"3-8orj
b = temp[j]; p~(+4uA
} m Acny$u
} UZcsMMKH
} 2o8:[3C5
>"LHr&;m&h
/** ^HS;\8Xvb
* @param data PE!/ n6
* @param l U;SReWqU
* @param i 0L->e(Vf7u
*/ 8 $5
y]%!
private void insertSort(int[] data, int start, int len) { uD'yzR!]+
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .bdp=vbA
} irjOGn
} Y-Iu&H+\
} !H)$_d \uj
} _*&I[%I5
.AB n$ml]
堆排序: 1omjP`]|,
TJYup%q
package org.rut.util.algorithm.support; @=
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import org.rut.util.algorithm.SortUtil; @`Fv}RY{
'=s{9lxn^
/** ^)J2tpr;]=
* @author treeroot B#Q` !B4v
* @since 2006-2-2 ar&j1""
* @version 1.0 }-Ds%L
*/ `efC4#*!!
public class HeapSort implements SortUtil.Sort{ "Wz8f
fAEgrw%Ti
/* (non-Javadoc) 3o_)x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _\/KI
/
*/ mS$9D{
public void sort(int[] data) { [zC1LTXe
MaxHeap h=new MaxHeap(); CdEQiu
h.init(data); EF>vu+YK
for(int i=0;i h.remove(); PL/g@a^tY
System.arraycopy(h.queue,1,data,0,data.length); &7\=Jw7w
}
h.Y&_=Gc
ddTsR
private static class MaxHeap{ lF[m*}l
D=+md
void init(int[] data){ nrBpq
this.queue=new int[data.length+1]; }Z/[ "
for(int i=0;i queue[++size]=data; uOQ!av2"Rf
fixUp(size); RGu`Jk
} ]!c59%f=
} r5RUgt
J#>)+
private int size=0; a/\SPXQ/9
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private int[] queue; &nV/XLpG
lQS(\}N
public int get() { ^cUmLzM
return queue[1]; "h@=O
c
} *&vlfH
1 5heLnei
public void remove() { ._E 6?
SortUtil.swap(queue,1,size--); =,BDd$e
fixDown(1); {})d}dEC
} ]Cc3}+(s
file://fixdown ]8n*f o2#
private void fixDown(int k) { .B+Bl/
int j; qnu<"$
while ((j = k << 1) <= size) { /IxoS
if (j < size %26amp;%26amp; queue[j] j++; L[s`8u<_)z
if (queue[k]>queue[j]) file://不用交换 XnwVK
break; E"O6N.}.
SortUtil.swap(queue,j,k); AZ9;6Df
k = j; CL|d>
} "[QQ(]={
} uGmv`R_
private void fixUp(int k) { c$.Zg=
while (k > 1) { N&uRL_X.
int j = k >> 1; BS.5g<E2q
if (queue[j]>queue[k]) `K7UWtp
break; 4-CGe
SortUtil.swap(queue,j,k); sck.2-f"
k = j; LULRi#n
} (+CNs
} +F?}<P_v
tP:ER
} bMA0#e2
b FMBIA|
} <e?1&5 6
4<j7F4
SortUtil: D03QisH=
<.Dg3RH
package org.rut.util.algorithm; U!GfDt
3v91 yMx
import org.rut.util.algorithm.support.BubbleSort; .rwa=IW
import org.rut.util.algorithm.support.HeapSort; o5E5s9n
import org.rut.util.algorithm.support.ImprovedMergeSort; GI<3L K\
import org.rut.util.algorithm.support.ImprovedQuickSort; aD&4C-,1
import org.rut.util.algorithm.support.InsertSort; /;5/7Bvj
import org.rut.util.algorithm.support.MergeSort; oO3X>y{gN
import org.rut.util.algorithm.support.QuickSort; .iV-Y *3<
import org.rut.util.algorithm.support.SelectionSort; ]@I>OcH
import org.rut.util.algorithm.support.ShellSort; s$JO3-)
{/|tVc63
/** ;=UkTn}N?l
* @author treeroot 8DuD1hZq
* @since 2006-2-2 HEk{!Y
* @version 1.0 ,rNv}
*/ Pil_zQ4
public class SortUtil { H
-K%F_#
public final static int INSERT = 1; $qR<_6j
public final static int BUBBLE = 2; uhm3}mWv
public final static int SELECTION = 3; JLbmh1'
public final static int SHELL = 4; YfstE3BV
public final static int QUICK = 5;
a)8;P7
public final static int IMPROVED_QUICK = 6; 0<XxR6w
public final static int MERGE = 7; <74r
public final static int IMPROVED_MERGE = 8; V}MRdt7
public final static int HEAP = 9; lt("yqBu
"$n ff=]
public static void sort(int[] data) { `qV*R
2
sort(data, IMPROVED_QUICK); FN<Sagj
} l`Ae&nc6
private static String[] name={ 8Sk$o.Gy
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8
KRo<
}; Zg4kO;r08
$!vK#8-&{
private static Sort[] impl=new Sort[]{ [VE>{4]W
new InsertSort(), T<%%f.x[s
new BubbleSort(), p=[SDk`
new SelectionSort(), m@W>ku
new ShellSort(), Eq=j+ch7
new QuickSort(), 2@!B;6*8q
new ImprovedQuickSort(), GP(ze-Yp
new MergeSort(), hvc3n>
Y[}
new ImprovedMergeSort(), xC9?Wt'
new HeapSort() n#5S-z1KNw
}; F@b=S0}K
1'%n?\OK66
public static String toString(int algorithm){ $q##Tys
return name[algorithm-1]; } 4ZWAzH
} qi['~((
&a+=@Z)kf
public static void sort(int[] data, int algorithm) { B"rO
impl[algorithm-1].sort(data); )~CNh5z6Y
}
(F&o!W
*mz-g7
public static interface Sort { !E6QED"
public void sort(int[] data); LMNmG]#!
} PVSz%"
t[ZGY,8
public static void swap(int[] data, int i, int j) { y" |gC!V}
int temp = data; M0t9`Z9
data = data[j]; #fDM{f0]R
data[j] = temp; B%WkM\\!^
} lf\^!E:
} ; Kh!OBZFo