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。 T&ib]LmR
插入排序: b
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package org.rut.util.algorithm.support; s:xt4<
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import org.rut.util.algorithm.SortUtil; |-9##0H
/** 9}T(m(WQVu
* @author treeroot }xJ!0<Bs
* @since 2006-2-2 3[UaK`/1C
* @version 1.0 /"@k_[O
*/ 9]gV#uF
public class InsertSort implements SortUtil.Sort{ LS/ZZAN u
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/* (non-Javadoc) AzMX~cd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .A F94OlE/
*/ ?$@E}t8g\
public void sort(int[] data) { ,l#f6H7p
int temp; k r5'E#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); af_bG;
} QfV:&b`
} byHXRA)39
} ~? n)/i("
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} !-Uq#Ea0/
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冒泡排序: _b!
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package org.rut.util.algorithm.support; | MXRNA~
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import org.rut.util.algorithm.SortUtil; wV q4DE
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/** %GigRA@no
* @author treeroot v*&WqVg
* @since 2006-2-2 2OwO|n
* @version 1.0 "y-/ 9C
*/ yK>s]65&
public class BubbleSort implements SortUtil.Sort{ T,uJO<
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/* (non-Javadoc) COL_c<\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <3 I0$?xL
*/ }LwKi-G?
public void sort(int[] data) { /Z2 g>
int temp; snVeOe#'S
for(int i=0;i for(int j=data.length-1;j>i;j--){ es1'z.U J
if(data[j] SortUtil.swap(data,j,j-1);
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} 3J[ 5^
} Uc0Sb
} &ER,;^H`6
} l(3\ekU!
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} ]Z>zf]<
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选择排序: 2 W Wr./q
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package org.rut.util.algorithm.support; \GCT3$
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import org.rut.util.algorithm.SortUtil; t+aE*Q
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/** J5zu}U?
* @author treeroot -v~XS-F
* @since 2006-2-2 O7xBMqMf
* @version 1.0 }4_c~)9Q
*/ D n}TO*
public class SelectionSort implements SortUtil.Sort { GE#LcCa
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/* ?>iZ){0,
* (non-Javadoc) R]y9>5 'U
* pbNW
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v]m#+E
*/ QD^"cPC)mM
public void sort(int[] data) { t_iZ\_8
int temp; 7VA6J-T
for (int i = 0; i < data.length; i++) { W4S]2P>T
int lowIndex = i; 9|2LuHQu+
for (int j = data.length - 1; j > i; j--) { U/:x<Y$ tj
if (data[j] < data[lowIndex]) { A[ N>T\
lowIndex = j; 7WN$ rl5/
} vW03nt86
} D,SL_*r{
SortUtil.swap(data,i,lowIndex); ?sbM= oo
} pjNH0mZ
} fqZ+CzH
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} du^r EMb%
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Shell排序: Cz#3W8jV
B=hJ*;:p
package org.rut.util.algorithm.support; !gG\jC~n
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import org.rut.util.algorithm.SortUtil; 5U.,iQ(d
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/** }9>X M
* @author treeroot &>z}u&oF
* @since 2006-2-2 * TR~>|
* @version 1.0 6 WEu(}=
*/ kA(q-Re$B*
public class ShellSort implements SortUtil.Sort{ AK5$>Pkvk
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/* (non-Javadoc) 9Jp"E5Ql)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d5tpw$A
*/ p&(~c/0
public void sort(int[] data) { ^g*/p[
for(int i=data.length/2;i>2;i/=2){ KDy:A>_ G"
for(int j=0;j insertSort(data,j,i); 'W|@d8}h
} -I{J]L$S#
} 21G:!t4/?n
insertSort(data,0,1); C6wlRvWn
} :@q9ll`6u
nwAx47>{
/** T(6B,
* @param data 8Zvh"Z?
* @param j t+BLO<
* @param i -g)*v<Fb5
*/ JulxFjC
private void insertSort(int[] data, int start, int inc) { 1@A*Jj[R%
int temp; Abf=b<bu
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); a3oSSkT
} m&Lc."
} {>=#7e-]
} c}g:vh
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} xn)r6
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快速排序: [EV}P&U
N0G-/
package org.rut.util.algorithm.support; R7!^ M
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import org.rut.util.algorithm.SortUtil; ,JmA e6
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/** Zx}.mt#}8
* @author treeroot "227 U)Q
* @since 2006-2-2 ?#X`Eu
* @version 1.0 `)R@\@jt
*/ nW
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public class QuickSort implements SortUtil.Sort{ ?W"9G0hTqM
1eDc:!^SD
/* (non-Javadoc) rKys:is
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5CuK\<
*/ uH-*`*
public void sort(int[] data) { T4{&@b
0*
quickSort(data,0,data.length-1); CfnRcnms
} 'zhw]L;'g
private void quickSort(int[] data,int i,int j){ 0yxMIX
int pivotIndex=(i+j)/2; id.W"5+
file://swap J8yi#A>+
SortUtil.swap(data,pivotIndex,j); y3!=0uPf
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int k=partition(data,i-1,j,data[j]); @Q atgYu
SortUtil.swap(data,k,j); #/9(^6f:
if((k-i)>1) quickSort(data,i,k-1); s(I7}oRWsL
if((j-k)>1) quickSort(data,k+1,j); l7r!fAV-f
IK-E{,iKc
} (N\Zz*PLz
/** `'`T'+0
* @param data <~Tlx:
* @param i i>[1^~;
* @param j jsvD[ \P
* @return \HOOWaapN
*/ E$[\Fk}S
private int partition(int[] data, int l, int r,int pivot) { S:"t]gbF =
do{ %.R_[.W
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ngN_,x7yc
SortUtil.swap(data,l,r); eMvb*X6
} Z qg(\
while(l SortUtil.swap(data,l,r); b\w88=|
return l; :/IcFU~)M
} ]4>[y?k34
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} =7mR#3yt
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改进后的快速排序: +B@NSEy/+
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package org.rut.util.algorithm.support; )Oz( <vxw
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import org.rut.util.algorithm.SortUtil;
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/** RfwTqw4@
* @author treeroot sy`:wp
* @since 2006-2-2 `8TM<az-L
* @version 1.0 $E4W{ad2jW
*/ %6"b<
MAO
public class ImprovedQuickSort implements SortUtil.Sort { 1a90S*M
puv*p%E
private static int MAX_STACK_SIZE=4096; ^F~e?^s
private static int THRESHOLD=10; v|Tg %
/* (non-Javadoc) UG>OL2m>5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K`FgU7g{
*/ ^[CD- #
public void sort(int[] data) { %f&(U/
int[] stack=new int[MAX_STACK_SIZE]; ~&~%q u
.so{ RI
int top=-1; ?8(`tS(_?
int pivot; S~F:%@,*
int pivotIndex,l,r; c+G: bb%p
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stack[++top]=0; /)de`k"
stack[++top]=data.length-1; Em@h5V
*<U&DOYV:
while(top>0){ vd /_`l.D
int j=stack[top--]; KF'H|)!K
int i=stack[top--]; n a2"Sy=Yi
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pivotIndex=(i+j)/2; R\:C|/6f
pivot=data[pivotIndex]; [ylGNuy
:*&wnQMKR
SortUtil.swap(data,pivotIndex,j); im+2)9f
J6 [x(T
file://partition u ?g!E."v
l=i-1; H8K<.RY
r=j; @\!wW-:A
do{ ".xai.trr
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :Rt5=0x
SortUtil.swap(data,l,r); /@RnCjc'
} uU.9*B=H9
while(l SortUtil.swap(data,l,r); ''BP4=r5n
SortUtil.swap(data,l,j); vEzzdDwi6
,0 &lag
if((l-i)>THRESHOLD){ :/%Vpdd@
stack[++top]=i; ^MJGY,r6b
stack[++top]=l-1; hCT%1R}rKr
} |7`Vw Z
if((j-l)>THRESHOLD){
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stack[++top]=l+1; Z{p6Q1u
stack[++top]=j; Sc6wC H
} YF>t {|
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} &"tce6&
file://new InsertSort().sort(data); \ @N> 38M
insertSort(data); P>@`hZ9
o
} v[a#>!;s
/** 2J4|7UwJ
* @param data DJQ]NY|
*/ 1~ SY
private void insertSort(int[] data) { XFu@XUk!K
int temp; N0vd>b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;7`<.y
} g=Qga09
} z{#F9'\&
} f6L_uk`{
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} )i_FU~ LRq
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归并排序: m]-8?B1`Y
~2H7_+.#
package org.rut.util.algorithm.support; Etu>z+P!
xD\Km>|i
import org.rut.util.algorithm.SortUtil; doR'=@ W
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/** mLkZ4OZ
* @author treeroot z)VIbEy
* @since 2006-2-2 n/,7ryu
* @version 1.0 k@8#By l|
*/ )%y~{j+ M
public class MergeSort implements SortUtil.Sort{ .v" lY2:N
7t04!dD}
/* (non-Javadoc) CMBW]b|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <go~WpA|r
*/ oy r2lfz*
public void sort(int[] data) { |~HlNUPR
int[] temp=new int[data.length]; R NA03
mergeSort(data,temp,0,data.length-1); amBz75N{
} 3,vH:L4
:):Y6)giBD
private void mergeSort(int[] data,int[] temp,int l,int r){ 'o7PIhD"
int mid=(l+r)/2; phc1AN=[E
if(l==r) return ; /hX"O?^
mergeSort(data,temp,l,mid); ZM#WdP
mergeSort(data,temp,mid+1,r); Vw{Ys6q
for(int i=l;i<=r;i++){ @Qs-A^.
temp=data; 1=;QWb6
} HQ
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int i1=l; Z@[,"{Sn
int i2=mid+1; __ mtZ{
for(int cur=l;cur<=r;cur++){ !%u#J:z2
if(i1==mid+1) 9#iDrZW
data[cur]=temp[i2++]; <{) 4gvH
else if(i2>r) 4]B3C\
v
data[cur]=temp[i1++]; ^mum5j
else if(temp[i1] data[cur]=temp[i1++]; R$fna[Xw@/
else *2AQ'%U~
data[cur]=temp[i2++]; R82Y&s;
} pt4xUu{
} poe Xi\e!(
OpL 6Y+<
} zJnVO$A'
}=|ZEhtOp
改进后的归并排序: KvD$`"L/CT
{cv;S2
package org.rut.util.algorithm.support; (t]>=p%4g
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import org.rut.util.algorithm.SortUtil; *n*y!z
r\
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/** 9#(QS+q~
* @author treeroot [*vN`AfE
* @since 2006-2-2 Hxl,U>za#
* @version 1.0 T8441qo{>
*/ <dN=d3S
public class ImprovedMergeSort implements SortUtil.Sort { AfEEYP)N
+zD'r5
private static final int THRESHOLD = 10; {6n \532@
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/* ^97ZH)Ww
* (non-Javadoc) \Zv =?\
* dI!/:x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) btF%}<o)
*/ _Y|kX2l
S@
public void sort(int[] data) { cik@QN<[0
int[] temp=new int[data.length]; GiZ'IDV
mergeSort(data,temp,0,data.length-1); !p&'so^-W
} "<2bjy
h(8;7}K
private void mergeSort(int[] data, int[] temp, int l, int r) { z`5I1#PVA
int i, j, k; (7b_g6>:
int mid = (l + r) / 2; ]-'9|N*}l
if (l == r) spx;QLo
return; 2SJh6U
if ((mid - l) >= THRESHOLD) %^l&fM*
mergeSort(data, temp, l, mid); u}1vn} F{
else )/Xrhhx
insertSort(data, l, mid - l + 1); \!QF9dP4
if ((r - mid) > THRESHOLD) =Yj[MVn
mergeSort(data, temp, mid + 1, r); z{g<y^Im+E
else I7PWOd
insertSort(data, mid + 1, r - mid); 5tU"|10m3
5)zB/Ta<
for (i = l; i <= mid; i++) { nTU~M~gky
temp = data; H ZLOn
} (d;(FBk='
for (j = 1; j <= r - mid; j++) { iy82QNe
temp[r - j + 1] = data[j + mid]; 3=l-jGJk
} B%@!\D#
int a = temp[l]; t60/f&A#7H
int b = temp[r]; +7/*y}.U
for (i = l, j = r, k = l; k <= r; k++) { `Y\/US70{c
if (a < b) { Hm*vKFhz
data[k] = temp[i++]; L||yQH7n
a = temp; ZY!pw6R1>*
} else { 02^(z6K'&?
data[k] = temp[j--]; <u?hdwW\
b = temp[j]; \.1b\\
} Gr@{p"./z
} c2\vG
} )Zf}V0!?+
N#)VD\m
/** G`#gV"PlC
* @param data :3>yr5a7-
* @param l L[G\+
* @param i 5SL>q`t.bd
*/ tN3 {7'\7
private void insertSort(int[] data, int start, int len) { wmr%h q
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); b2=Q~=Wc
} +Jka :]MW!
} px>>]>ZMH
} lq8ko@
} /eRtj:9M
C)96/k
堆排序: i>Bi&azx
6&QTVdK'O
package org.rut.util.algorithm.support; 2Ml2Ue-9
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import org.rut.util.algorithm.SortUtil; ,okJ eZ
.&x?`pER
/** -mHhB(Td'
* @author treeroot [a)~Dui0@\
* @since 2006-2-2 /Tf*d>Yh;
* @version 1.0 ptcLJ]+)
*/ 8*#][wC2
public class HeapSort implements SortUtil.Sort{ f76|
6>BDA?
/* (non-Javadoc) kw^Dp[8X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @!a]qAt
*/ D^s0EW-E
public void sort(int[] data) { ;]ShC\1
MaxHeap h=new MaxHeap(); ;~:Ryl M
h.init(data); q AVfbcb
for(int i=0;i h.remove(); O?,i?
System.arraycopy(h.queue,1,data,0,data.length); ) .-(-6=R
} Bb[0\Hs7
lcT+$4zk.
private static class MaxHeap{ :$cSQ(q9a
a H|OA\<
void init(int[] data){ K@sP~('
this.queue=new int[data.length+1]; KvJP(!{
for(int i=0;i queue[++size]=data; )]b@eGNGj
fixUp(size); K# i*9sM
} )~blx+ \y
}
):fu
{.D2ON
private int size=0; 8cBW] \ v
%c&Ah
private int[] queue; )|h;J4V
<,X+`m&
public int get() { ]b~2Dap
return queue[1]; YaVc9du7
} B
mBzOk^
/yw\(|T
public void remove() { 8@W/43K8-
SortUtil.swap(queue,1,size--); dI
ZTLb"a
fixDown(1); C3b0`|5
} GE~(N N
file://fixdown E2h;hr;W
private void fixDown(int k) { WQLHjGehe
int j; t2-nCRXEP
while ((j = k << 1) <= size) { }M9DqZ;I
if (j < size %26amp;%26amp; queue[j] j++; Nzi/3r7m
if (queue[k]>queue[j]) file://不用交换 R3{*v =ov
break; [mB(GL
SortUtil.swap(queue,j,k); rxgVT4
k = j; tY$ty0y-e
} X|1_0
} Xk&F4BJQk<
private void fixUp(int k) { /romTK4
while (k > 1) { jRdhLs,M9
int j = k >> 1; f0mH|tI`
if (queue[j]>queue[k])
+ptF -
break; ;+ Co!L
SortUtil.swap(queue,j,k); IQlw 914
k = j; 3dxnh,]&@
} yrE,,N%I
} F'UguC">
Dmm r]~
} fs3-rXoB
tgvpf/cQ
} bco[L@6G$
@RoRNat
SortUtil: 0(hv #C4
orQV'
package org.rut.util.algorithm; 17n+4J]
*t?~)o7
import org.rut.util.algorithm.support.BubbleSort; J+cAS/MYX
import org.rut.util.algorithm.support.HeapSort; {Ukc D+.Y
import org.rut.util.algorithm.support.ImprovedMergeSort; }[KDE{,V
import org.rut.util.algorithm.support.ImprovedQuickSort; yYG3/Z3u5
import org.rut.util.algorithm.support.InsertSort; A1|7(Sow
import org.rut.util.algorithm.support.MergeSort; A^4kYOe
import org.rut.util.algorithm.support.QuickSort; 0x]OF8=J
import org.rut.util.algorithm.support.SelectionSort; ~D-JZx
import org.rut.util.algorithm.support.ShellSort; fNAo$O4cm
PV]k3&y
/** w`.T/
* @author treeroot y=oVUsG
* @since 2006-2-2 (N*<\6kr
* @version 1.0 BS-:dyBw
*/ ! =\DC,-CB
public class SortUtil { re ]Ste
public final static int INSERT = 1; _d\u!giy
public final static int BUBBLE = 2; C"U[ b%
public final static int SELECTION = 3; s0\f9D
public final static int SHELL = 4; n{.*El>{
public final static int QUICK = 5; W?"2;](
public final static int IMPROVED_QUICK = 6; Msv*}^>
public final static int MERGE = 7; /jZaU`
public final static int IMPROVED_MERGE = 8; yUD_w
public final static int HEAP = 9; ~}7$uW0ol
}DDVGs[
public static void sort(int[] data) { 2xL!PR-
sort(data, IMPROVED_QUICK); :_o] F
} _uO!N(k.
private static String[] name={ B8cBQ v
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )]c]el@y
}; >/!7i3Ow-
f%Z;05
private static Sort[] impl=new Sort[]{ L@1,7@
new InsertSort(), J$6-c'8
new BubbleSort(),
JVUZ}#O
new SelectionSort(), P0'e"\$
new ShellSort(), H}) Dcg3
new QuickSort(), i14[3bPLk!
new ImprovedQuickSort(), VjA wn}eO
new MergeSort(), 7d|*postv
new ImprovedMergeSort(), x9x#'H3
new HeapSort() .])>A')r
}; SE,o7_k'S
.0nn0)"
public static String toString(int algorithm){ OYszW]UMg
return name[algorithm-1]; iA55yT+
} )(:+q(m
4|zdXS
public static void sort(int[] data, int algorithm) { L;1$xI8tx
impl[algorithm-1].sort(data); u%6Irdx
} Z/89&Uy`h
[K/O5_
public static interface Sort { NCowt|#t
public void sort(int[] data); YVQ_tCC_!
} la
G$v-r
RLYU\@kK?
public static void swap(int[] data, int i, int j) { 18DTv6?QG
int temp = data; M>*0r<qn
data = data[j]; 5cyddlaat
data[j] = temp; Fb<n0[m
} Lv
`#zgo_f
} 2-vJv+-