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。 h y[_
插入排序: Fah}#,
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package org.rut.util.algorithm.support; -nk %He
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import org.rut.util.algorithm.SortUtil; ;?:,L
/** T!a8c<'V
* @author treeroot )i!)Tv
* @since 2006-2-2 B!tte)
* @version 1.0 ^d=Z/d[
*/ S'@"a%EV
public class InsertSort implements SortUtil.Sort{ 0N
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t#pY2!/T3
/* (non-Javadoc) 3:;%@4f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gSe{S
*/ to?"{
public void sort(int[] data) { @pS[_!EqYz
int temp; dJ&s/Z/>E
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8 Zj>|u
} gRqz8UI
} &YMVoyVD
} 11-uJVO~*
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} h=U 4
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冒泡排序: 9E#(i P
QV 'y6m\
package org.rut.util.algorithm.support; a #0{tZd
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import org.rut.util.algorithm.SortUtil; 0,3 ':Df
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/** *oWzH_
* @author treeroot ^}[
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* @since 2006-2-2 ixH7oWH#
* @version 1.0 uJ y@
*/ p}!pT/KmpH
public class BubbleSort implements SortUtil.Sort{ R 1 b`(
HWU{521
/* (non-Javadoc) k %rP*b*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nc{<v
*/ `&6]P :_qp
public void sort(int[] data) { gjWH
}(K
int temp; ]a%Kn]HI&2
for(int i=0;i for(int j=data.length-1;j>i;j--){ {2Ibd i
if(data[j] SortUtil.swap(data,j,j-1); ;C<A}
} fh3
6
} W!^=)Qs
} xr2:bu
} qs b4@jt+
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} igL^k`&5^"
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选择排序: ZM.g+-9
ZSSgc0u^?
package org.rut.util.algorithm.support; ]]ZBG<#
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import org.rut.util.algorithm.SortUtil; F"C Yrt
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/** I$LO0avvH2
* @author treeroot !;a<E:
* @since 2006-2-2 5b'S~Qj#r$
* @version 1.0 m t^1[
*/ Uf<vw3
public class SelectionSort implements SortUtil.Sort { AVWrD[ wD2
iE`aGoA
/* "lZ<bG
* (non-Javadoc) n58jB:XR(
* yw<xv-Q=i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k#&SWp=
*/ ~-%A@Lt
public void sort(int[] data) { 6KG 63`aQ
int temp; Y5CE#&
for (int i = 0; i < data.length; i++) { BxU1Q&
int lowIndex = i; Z(eSnV_RL
for (int j = data.length - 1; j > i; j--) { >cb
gL%
if (data[j] < data[lowIndex]) { 5XHkRcESZ
lowIndex = j; (c2\:hvy
} ^'4uTbxP_!
} #VE$C3<
SortUtil.swap(data,i,lowIndex); Se`N5hQ
} z-G (!]:
} ^aCYh[=
Ke'2"VkQt
} 7p$*/5fk
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Shell排序: 2A|6o*s"
v!xrUyN~m
package org.rut.util.algorithm.support; w#,v n8
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import org.rut.util.algorithm.SortUtil; GcCs}(eo
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/** I "2FTGA
* @author treeroot w"i Zn
* @since 2006-2-2 fZfiiE~7J
* @version 1.0 9m4rNvb
*/ z]AS@}wWqg
public class ShellSort implements SortUtil.Sort{ 2v1&%x:y#
J|24I4
/* (non-Javadoc) vKC&Qi ;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h';v'"DoW`
*/ `h!&->
public void sort(int[] data) { 3+5\xRq
for(int i=data.length/2;i>2;i/=2){ :q<%wLs
for(int j=0;j insertSort(data,j,i); `kSCH; mwP
} KBe {
} J)|K/W9
insertSort(data,0,1); ueBoSZRWX
} ;_5
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/** 'LLx$y.Ei[
* @param data 2z# @:Q
* @param j jgw'MpQm{
* @param i *AR<DXEL
*/ em!R9J.
private void insertSort(int[] data, int start, int inc) { ^3o8F
int temp; Ec*7n6~9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Bjj^!T/#
} L6=RD<~C
} #@s~V<rW
} RyWOiQk;
u!k<sd_8B
} kQl cT"R
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快速排序: ,nRwwFd.
XPo'iI-
package org.rut.util.algorithm.support; k]9> V@C
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import org.rut.util.algorithm.SortUtil; VhI IW"1
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/** W<]Oo ]
* @author treeroot SJ7=<y}[d
* @since 2006-2-2 |0R%!v(,
* @version 1.0 ND1%s &
*/ :wmf{c
public class QuickSort implements SortUtil.Sort{ DLVs>?Y
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/* (non-Javadoc) L9?/ -@M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SH$cn,3F8
*/ 0+y~RTAVB
public void sort(int[] data) { tF g'RV{
quickSort(data,0,data.length-1); ^_h7!=W
} Zi@+T
private void quickSort(int[] data,int i,int j){ NV(4wlh)y
int pivotIndex=(i+j)/2; 7+hF;
file://swap [pFu
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SortUtil.swap(data,pivotIndex,j); `$agM@"^
~'QeN%qadP
int k=partition(data,i-1,j,data[j]); $SGA60q
SortUtil.swap(data,k,j); %R*vSRG/U
if((k-i)>1) quickSort(data,i,k-1); )u )$ `a
if((j-k)>1) quickSort(data,k+1,j); }d\Tk(W
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} ,3--ERf
/** \ j X N*A
* @param data ;(0$~O$3u
* @param i F@'rP++4
* @param j S<]a@9W
* @return _AB9BQm
*/ FO>( QLlH
private int partition(int[] data, int l, int r,int pivot) { 4J
51i*`
do{ zMr!WoW
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); KW7?: x
SortUtil.swap(data,l,r); ^8l3j4
} h4.=sbzZ
while(l SortUtil.swap(data,l,r); U;Ll.BFP
return l; D<3V#Opw
} chMc(.cN0
^N2M/B|0
} Z*9]:dG:!
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改进后的快速排序: dJ%Rk#?;A
&<|-> *v
package org.rut.util.algorithm.support; (p.3'j(
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import org.rut.util.algorithm.SortUtil; b801OF
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/** :{WrS
* @author treeroot LQ(5D_yG.
* @since 2006-2-2 -6~y$c&c
* @version 1.0 'tu@`7*
*/ waWKpk1Wo
public class ImprovedQuickSort implements SortUtil.Sort { ,Lun-aMd
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private static int MAX_STACK_SIZE=4096; =e!l=d|/
private static int THRESHOLD=10; <k\H`P
/* (non-Javadoc) ~l*?D7[o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~'NpM#A
*/ \aVY>1`
public void sort(int[] data) { w0j/\XN2s
int[] stack=new int[MAX_STACK_SIZE]; 4`U0">gY
ig2+XR#%
int top=-1; +fd@K
int pivot; <ql w+RVt
int pivotIndex,l,r; pgd8`$(Q
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stack[++top]=0; S2
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stack[++top]=data.length-1; 3 IWLBc
Yb%-tv:
while(top>0){ 9XoQO 9*Q
int j=stack[top--]; S'!q}|7X3
int i=stack[top--]; &`yOIX-H_
GT'7,+<?N
pivotIndex=(i+j)/2; 45+%K@@x
pivot=data[pivotIndex]; hY=w|b=Y
F?8BS*r_
SortUtil.swap(data,pivotIndex,j); _}e7L7B7g
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file://partition )Ab6!"'
l=i-1; cZgMA8
F
r=j; 2sqm7th
do{ ',JrY)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2<'`^AO@
SortUtil.swap(data,l,r); v0Ai!#
} $Eio$TI
while(l SortUtil.swap(data,l,r); +:> J Z$
SortUtil.swap(data,l,j); x*h?%egB!p
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if((l-i)>THRESHOLD){ =9pw uH
stack[++top]=i; G`,u40a
stack[++top]=l-1; 79SqYe=&uy
} nw0L1TP/J
if((j-l)>THRESHOLD){ (S
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stack[++top]=l+1; .73zik
stack[++top]=j; a#+>w5
} 6P~aW
y !<'rg
} ~^I\crx,U%
file://new InsertSort().sort(data); dh^+l;!L
insertSort(data); [IX*sr
} J]}FC{CD!
/** hojHbmm4
* @param data EJZ@p7*Oj
*/ WY+(]Wkao
private void insertSort(int[] data) { 'lhP!E_)q
int temp; 2yN%~C?$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); co5y"yj_
} >1x7UXs~:
} 1$$37?FE
} u12zRdn
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} -@''[m .*
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归并排序: Ue(r}*
E'5Ajtw;
package org.rut.util.algorithm.support; 2Co@+I[,4&
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import org.rut.util.algorithm.SortUtil; aje^Z=]
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/** Fr-[UZ~V
* @author treeroot U~aWG\h#X
* @since 2006-2-2 [tUv*jw %
* @version 1.0 - $U@By<SJ
*/ ]o-Fi$h!
public class MergeSort implements SortUtil.Sort{ )`w=qCn1 Y
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/* (non-Javadoc) 4s9c#nVlu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KNy`Lj)VPY
*/ o2DtCU-A
public void sort(int[] data) { xE%O:a?S
int[] temp=new int[data.length]; !#q{Z>H`
mergeSort(data,temp,0,data.length-1); ~}BJ0P(VMc
} }wG,BB %N
2Ok?@ZdjA{
private void mergeSort(int[] data,int[] temp,int l,int r){ q"S(7xWS
int mid=(l+r)/2; y-'" >
if(l==r) return ;
LI[ ?~P2\
mergeSort(data,temp,l,mid); z^r|3;
mergeSort(data,temp,mid+1,r); AzZJG v]H
for(int i=l;i<=r;i++){ sf`PV}a1
temp=data; /I`3dWL
} Nz~(+pVWg5
int i1=l; [*Q-nZ/L
int i2=mid+1; kl"
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for(int cur=l;cur<=r;cur++){ hp*<x4%*a"
if(i1==mid+1) t\8&*(&3F
data[cur]=temp[i2++]; h1#S+k
else if(i2>r) Gz?2b#7v
data[cur]=temp[i1++]; MU|{g
5/
)
else if(temp[i1] data[cur]=temp[i1++]; E#8_hT]5
else qU#$2
data[cur]=temp[i2++]; lzEb5mg
} [[w2p
} | H8^
q/$GE,"
} be7L="vZw
t:>x\V2m
改进后的归并排序: a5a1'IVq
{7qA &c=
package org.rut.util.algorithm.support; =L"^.c@
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import org.rut.util.algorithm.SortUtil; BEWro|]cM
j&WL*XP&5
/** [EgW/\35
* @author treeroot SG:bM7*1'
* @since 2006-2-2 fD{II+T
* @version 1.0 >B_n/v3P(M
*/ ^_68]l=
public class ImprovedMergeSort implements SortUtil.Sort { n+HsQ]z.
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private static final int THRESHOLD = 10; Ea4_Qmn
jq(qo4~;
/* X"j>=DEX
* (non-Javadoc) ^;r+W-MQ
* W5.Va.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `B:"6nW6
*/ e0 u,zg+m
public void sort(int[] data) { \, 8p1$G
int[] temp=new int[data.length]; b#/i.!:a
mergeSort(data,temp,0,data.length-1); 03([@d6<E
}
/ +1{
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M[^
private void mergeSort(int[] data, int[] temp, int l, int r) { -f9]v9|l
int i, j, k; @A{m5h
int mid = (l + r) / 2; h%TLD[[/jr
if (l == r) WhFS2Jl0
return; ]GX \|1L
if ((mid - l) >= THRESHOLD) F\:(*1C
mergeSort(data, temp, l, mid); Hm
fXe
else ,gMy@
insertSort(data, l, mid - l + 1); L\e>B>u
if ((r - mid) > THRESHOLD) R*9NR,C
mergeSort(data, temp, mid + 1, r); pZk6w1d!
else }"_j0ax
insertSort(data, mid + 1, r - mid); u[")*\CP
!8R@@,_v
for (i = l; i <= mid; i++) { ZCYS\E7X
temp = data; cSK&[>i)4
} U>P|X=)
for (j = 1; j <= r - mid; j++) { !^y y0`k6
temp[r - j + 1] = data[j + mid]; XV>&F{
} !VP %v&jKm
int a = temp[l]; {q3:Z{#>7
int b = temp[r]; 7NL%$Vf
for (i = l, j = r, k = l; k <= r; k++) { 8;8c"'Mn
if (a < b) { A\AT0th
data[k] = temp[i++]; r?A|d.Tl
a = temp; hat>kXm2K
} else { )R?;M
data[k] = temp[j--]; ECcZz.
b = temp[j]; tmJgm5v
} j U[
O
} A6{b?aQ
} 909md|9K3
T9syo/(
/** AIRr{Y
* @param data }]+xFj9[>
* @param l o''wCr%
* @param i ;%!B[+ut"
*/ c</1
private void insertSort(int[] data, int start, int len) { ;%Hf)F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >cN~U3
} 7dOyxr"H-
} tX%`#hb?s
} P0Z!?`e=M
} /6+NU^
[/ M`
堆排序: L}sx<=8.m
8VQ 24r
package org.rut.util.algorithm.support; +jP~s
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import org.rut.util.algorithm.SortUtil; ]zfG~^.
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/** .S?pG_n]f
* @author treeroot XYEv&-M`?w
* @since 2006-2-2 a%vrt)Gx
* @version 1.0 en*d/>OVJ
*/ E?)656F[
public class HeapSort implements SortUtil.Sort{ k\`S
lb1
o<i,*y88
/* (non-Javadoc) b)#Oc,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c#/H:?q?a
*/ H1EDMhn/
public void sort(int[] data) { CC^E_j T
MaxHeap h=new MaxHeap(); Vz=auM1xZ
h.init(data); I97yt[,Yy
for(int i=0;i h.remove();
#^#HuDH
System.arraycopy(h.queue,1,data,0,data.length); 8,"yNq
} vZj`|
O) atNE
private static class MaxHeap{ SHVWwoieT
Jc6R{C
void init(int[] data){ >rsqH+oL
this.queue=new int[data.length+1]; ?sz)J3
for(int i=0;i queue[++size]=data; .;7> y7$*
fixUp(size); r|Z5Xc
} #/2$+x
} I@#;nyAj"
p[AO'
xx
private int size=0; >slm$~rv
hr05L<?H
private int[] queue; kzn[
=P
Z;l`YK^-
public int get() { UBv@+\Y8m
return queue[1]; ?:{sH#ua
} ^5GW$
W,^W^:m-x
public void remove() { \daZk /@
SortUtil.swap(queue,1,size--); aUHcYc\u
fixDown(1); ao_4m SB
} '(GiF
file://fixdown $Xm6N@
private void fixDown(int k) { `o]g~AKX
int j; #>=j79~
while ((j = k << 1) <= size) { RwI[R)k
if (j < size %26amp;%26amp; queue[j] j++; gKz(=
if (queue[k]>queue[j]) file://不用交换 {--0z3n>
break; Z/;Xl~
SortUtil.swap(queue,j,k); 5irwz4.4
k = j; fA/m1bYxg
} 1923N]b
} \s"U{N-
private void fixUp(int k) { 'H5M|c$s
while (k > 1) { gKLyL]kAGz
int j = k >> 1; 2d%}- nw
if (queue[j]>queue[k]) X$%4$
break; 9,j-Vp!G
SortUtil.swap(queue,j,k); <f@"HG
l
k = j; Wq*b~Lw
} $$b
9&mTl#
} ;Gx)Noo/>
/sM~Uq?
} xx{!3 F
y[B>~m8$
} oi}i\:
hI
d8-A*W[
SortUtil: 98=wnWX6$
fb8%~3i>
package org.rut.util.algorithm; akw,P$i
.#02
ngh
import org.rut.util.algorithm.support.BubbleSort; }_=eT]
import org.rut.util.algorithm.support.HeapSort; )i+2X5B`S
import org.rut.util.algorithm.support.ImprovedMergeSort; T91moRv
import org.rut.util.algorithm.support.ImprovedQuickSort; 3(C\.oRc
import org.rut.util.algorithm.support.InsertSort; W>-Et7&2
import org.rut.util.algorithm.support.MergeSort; ;XM{o:1Y[
import org.rut.util.algorithm.support.QuickSort; f&v9Q97=
import org.rut.util.algorithm.support.SelectionSort; "-@[R
import org.rut.util.algorithm.support.ShellSort; Z{&cuo.@<]
D}8EER b
/** Eu"_MgD
* @author treeroot C8FB:JNJV
* @since 2006-2-2 rZ8`sIWQt
* @version 1.0 p<=$&*
*/ 4pw6bK,s2\
public class SortUtil { 87hq{tTs]
public final static int INSERT = 1; =zQN[
public final static int BUBBLE = 2; KYzv$oK
public final static int SELECTION = 3; y;/VB,4V
public final static int SHELL = 4; w]N!S;<N
public final static int QUICK = 5; H":oNpfb
public final static int IMPROVED_QUICK = 6; 6Gf?m;
public final static int MERGE = 7; boDt`2=
public final static int IMPROVED_MERGE = 8; x _c[B4Tw
public final static int HEAP = 9; mI 74x3 [
>/|q:b^2r
public static void sort(int[] data) { I`NjqyTW
sort(data, IMPROVED_QUICK); M4as
} w@,zFV
private static String[] name={ E>l~-PaZY
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 98^V4maR:
}; 13taFVdU
1GzAG;UUo6
private static Sort[] impl=new Sort[]{ s[UHe{^T
new InsertSort(), T=ev[ mS
new BubbleSort(), ;*MLRXq
new SelectionSort(), eM8}X[
new ShellSort(), #U14-^7
new QuickSort(), X&kp;W
new ImprovedQuickSort(), om1eQp0N
new MergeSort(), .V,@k7U,V
new ImprovedMergeSort(), ](hE^\SC
new HeapSort() =>-Rnc@
}; =?!wXOg_
#\=F O>
public static String toString(int algorithm){ ^0Mt*e{q
return name[algorithm-1]; `nu''B
H
} <Y}R#o1Z
8i2n;LAz
public static void sort(int[] data, int algorithm) { 4r45i:
impl[algorithm-1].sort(data); q<M2,YrbAI
} hIT+gnhh
79;<_(Y
public static interface Sort { $&=S#_HQS
public void sort(int[] data); c
Vc-
} u A<n
|p ,P46I
public static void swap(int[] data, int i, int j) { m;,N)<~
int temp = data; 1jcouD5?H
data = data[j]; FYpzQ6s~
data[j] = temp; :=Nz}mUV
} ')cMiX\v
} fb~ytl<