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。 1{Ik.O)
插入排序: BCO (,k
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package org.rut.util.algorithm.support; a4XK.[O
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import org.rut.util.algorithm.SortUtil; jX.'G
/** YZAQt*x
* @author treeroot <qVOd.9c
* @since 2006-2-2 b/_u\R
]-'
* @version 1.0 7)RRCsn
*/ Z+=WICI/2
public class InsertSort implements SortUtil.Sort{ {113B)
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/* (non-Javadoc) /.(~=6o5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dt0(04
*/ l,5isq
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public void sort(int[] data) { E5?$=cL?
int temp; r`$P60,@C
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c_t7<
} MO?
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} )Fw#]~Z
} y Ni3@f
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} Kpkpr`:)]
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冒泡排序: >3,}^`l
@YVla!5O@
package org.rut.util.algorithm.support; (G~M E>
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import org.rut.util.algorithm.SortUtil; _88X-~.
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/** nchpD@'t
* @author treeroot MwX8F YF
D
* @since 2006-2-2 1+[,eq
* @version 1.0 V+zn`
\a
*/ Tkn8Wj
public class BubbleSort implements SortUtil.Sort{ .$1S-+(kV
9I}Uh#]k<
/* (non-Javadoc) Rp!"c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !}5+hj!6
*/ h7 mk<
public void sort(int[] data) { 'J)9#
int temp; ;I6C`N
for(int i=0;i for(int j=data.length-1;j>i;j--){ #%pY,AK:=
if(data[j] SortUtil.swap(data,j,j-1); E2tUL#
} Ffd4c
} ~Lq`a@]A
} B 74
} MShcZtN
!=HxL-`j
} |[p]])
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A8k $.E
选择排序: k@pEs# a
t*fH&8(
package org.rut.util.algorithm.support; 3EH@tlTl
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import org.rut.util.algorithm.SortUtil; Nrq/Pkmy
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/** VF +g+~
* @author treeroot UG vUU<N|N
* @since 2006-2-2 NZlCn:"
* @version 1.0 [!Djs![O
*/ -0I&dG-
public class SelectionSort implements SortUtil.Sort { [x-
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/* ftQ;$@
* (non-Javadoc) Js.G
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* +HjSU2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (!?%"e
*/ 3HNm`b8G4m
public void sort(int[] data) { i~3\dp
int temp; brK7|&R<
for (int i = 0; i < data.length; i++) { b&]z^_m)
int lowIndex = i; @1qdnU
for (int j = data.length - 1; j > i; j--) { Nfv`
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if (data[j] < data[lowIndex]) { .krEfY&
lowIndex = j; LoOw]@>
} 7\ X_%SM %
} ulk/I-y
SortUtil.swap(data,i,lowIndex); s){VU2.ra
} jk Aru_C
} 06`caG|]-M
r9<#R=r)}J
} !|
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Shell排序: mE'HRv
q"WfKz!U
package org.rut.util.algorithm.support; D( y
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import org.rut.util.algorithm.SortUtil; R8YU#D (Q
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/** W"\+jHF"
* @author treeroot of >
* @since 2006-2-2 ma/<#l^}
* @version 1.0 r=xec@R]*
*/ ys:F
public class ShellSort implements SortUtil.Sort{ vst;G-ys
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/* (non-Javadoc) J3/e;5w2Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gc
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*/ fp`m>}
-
public void sort(int[] data) { n?S)H=
for(int i=data.length/2;i>2;i/=2){ b?2 \j}
for(int j=0;j insertSort(data,j,i); 9|NF)~Q}'
} Bsk` e
} h
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insertSort(data,0,1); xCyD0^KY
} PG@C5Rnu
"*TP@X?@f
/** dz/3=0
* @param data bIzBY+P
* @param j &'/bnN +R
* @param i 1uEM;O
*/ P,#l~ \
private void insertSort(int[] data, int start, int inc) { sp_19u
int temp; 2_Zn?#G8dl
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z~i>GN_
} .4Mc4'
} 0LTsWCUQ6e
} a=sd&](_
"|N0oEG&
} U.=TjCW
U} Pr1
快速排序: B7S)L#l_\
bU}l*"
package org.rut.util.algorithm.support; Moi>Dp
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import org.rut.util.algorithm.SortUtil; e?\hz\^
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/** y>cT{ )E$
* @author treeroot -vh\XO
* @since 2006-2-2 mR#"ng
* @version 1.0 @Hr1.f
*/ qZlL6
public class QuickSort implements SortUtil.Sort{ L"uidd0(g
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/* (non-Javadoc) B"`86qc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d6zq,x!cI
*/ %][zn$aa|
public void sort(int[] data) { 9U@>&3[v
quickSort(data,0,data.length-1); <W^>:!?w
} ^e80S^
private void quickSort(int[] data,int i,int j){ j#l1KO^y
int pivotIndex=(i+j)/2; fF5\\_,
file://swap "y ;0}9]n1
SortUtil.swap(data,pivotIndex,j); jS|jPk|I.
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int k=partition(data,i-1,j,data[j]); s-F3(mc(
SortUtil.swap(data,k,j); -AQ
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if((k-i)>1) quickSort(data,i,k-1); M(ie1Ju
if((j-k)>1) quickSort(data,k+1,j); G*-7}7OAs
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} UI wTf2B
/** /<J5?H
* @param data (m')dSZ
* @param i #?Ob->v
* @param j fJ%A_N}
* @return VK|$SY(
*/ LX(`@-<DH
private int partition(int[] data, int l, int r,int pivot) { 20M]gw]
do{ cA{,2CYc
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \}gITc).j
SortUtil.swap(data,l,r); Re1}aLd
} awLSY:JI
while(l SortUtil.swap(data,l,r); GwG(?_I"
return l; MEtKFC|p
} ]XWtw21I1
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} j k])S~xl?
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改进后的快速排序: C2L=i3R
JycC\s+%E
package org.rut.util.algorithm.support; DRRy5+,I
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import org.rut.util.algorithm.SortUtil; &hWYw+yH\
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/** }dEf |6_
* @author treeroot +@do<2l]
* @since 2006-2-2 (cp$poo
* @version 1.0 .]; `
*/ R1/mzPG
public class ImprovedQuickSort implements SortUtil.Sort { y p pZ@
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private static int MAX_STACK_SIZE=4096; QQ99sy
private static int THRESHOLD=10; :x!'Eer
n
/* (non-Javadoc) )r
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <fDbz1Q;l
*/ 3\|PwA9fN8
public void sort(int[] data) { f/Q/[2t
int[] stack=new int[MAX_STACK_SIZE]; uTmT'u:}
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int top=-1; |W SvAM3
int pivot; (V`ddP-
int pivotIndex,l,r; ~b9fk)z!
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stack[++top]=0; WwLV^m]
stack[++top]=data.length-1; &Z+.FTo
NDG?Xs [2
while(top>0){ "ZG2olOqLI
int j=stack[top--]; [t]q#+Zs
int i=stack[top--]; n%{oFTLCo
Z}>+!Z
pivotIndex=(i+j)/2; )2bbG4:N
pivot=data[pivotIndex]; >UV=k :Q
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SortUtil.swap(data,pivotIndex,j); _9z+xl
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file://partition M:%Ll3
l=i-1; XE;aJ'kt
r=j; rTeADu_vf
do{ "':SWKuMx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); px^brzLQo
SortUtil.swap(data,l,r); oN(F$Nvk
} ;!<@Fm9W
while(l SortUtil.swap(data,l,r); f'u[G?C
SortUtil.swap(data,l,j); ^>h2.AJ
21~~ =+)X
if((l-i)>THRESHOLD){ .1[pO_
stack[++top]=i; U5j0i]
stack[++top]=l-1; N0(($8G
} XK
yW
if((j-l)>THRESHOLD){ (FOJHjtkM
stack[++top]=l+1; :;o?d&C
stack[++top]=j; tsf!Q
} a&gf0g;@I
_/F}y[B7d
} {G _|gs
file://new InsertSort().sort(data); vtTXs]>
insertSort(data); D 6F/9|
} ,>I_2mc
/** _;k))K^
* @param data Le,+jm
*/ L%f$ &
private void insertSort(int[] data) { `e+eL*rZ~
int temp; 9`DY6qfly
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [Ny'vAHOj
} pEiq;2{~Yn
} +fq;o8q
} mC EWp
'h{DjNSM
} [.4D<}e
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归并排序: N{fYO4O
Y1 6pT
package org.rut.util.algorithm.support; =L}$#Y8?
aGmbB7[BZ
import org.rut.util.algorithm.SortUtil; Wr.~Ns<
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/** GC~N$!*
* @author treeroot +Z%8X!Q
* @since 2006-2-2 tOw[
* @version 1.0 90+Hv:wF
*/ Jv:|J
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public class MergeSort implements SortUtil.Sort{ t($z+C<
6 bt{j
/* (non-Javadoc) 9;EY3[N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SwmX_F#_
*/ A>}]=Ii/
public void sort(int[] data) { bqUQadDB
int[] temp=new int[data.length]; 0"=}d y
mergeSort(data,temp,0,data.length-1); Rj,M|9Y)o
} l, 1.6
iTeFy-Ct
private void mergeSort(int[] data,int[] temp,int l,int r){ 7R".$ p
int mid=(l+r)/2; C,3yu,'
if(l==r) return ; \EEU G^T
mergeSort(data,temp,l,mid); ~8G cWy6
mergeSort(data,temp,mid+1,r); ~sc@49p
for(int i=l;i<=r;i++){ |n.ydyu`
temp=data; |b)N;t
} O;<YLS^|6
int i1=l; ,5Tw5<S
int i2=mid+1; $a+)v#?,
for(int cur=l;cur<=r;cur++){ x8*@<]!
if(i1==mid+1) & A @!g
data[cur]=temp[i2++]; m{sch`bP
else if(i2>r) =_H)5I_\
data[cur]=temp[i1++]; .#ATI<t
else if(temp[i1] data[cur]=temp[i1++]; .t9zF-jk
else n!y}p q6
data[cur]=temp[i2++]; 9i#K{CkC|
} -X#qW"92q
} fT_swhIO
Qmn'G4#@E
} g3,F+
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改进后的归并排序: Nh\y@\F>
t8FgQ)tk
package org.rut.util.algorithm.support; MFLw^10(T
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import org.rut.util.algorithm.SortUtil; sR*JU%
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/** vW4N[ .+
* @author treeroot \Rvsy;7
* @since 2006-2-2 Bn{0-5nj
* @version 1.0 ?GKm_b]JC
*/ L\UM12
public class ImprovedMergeSort implements SortUtil.Sort { <x2 F5$@
gb/M@6/j
private static final int THRESHOLD = 10; ]j?Kn$nv*S
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/* k~b8=$
* (non-Javadoc) QYTwGThWR
* f^X\ N/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pGGx.&5#82
*/ hKW!kA=gZ
public void sort(int[] data) { {:9P4<%H
int[] temp=new int[data.length]; z?8Sie
mergeSort(data,temp,0,data.length-1); 6 _\j_$
} ihdtq
yw)Ztg)
private void mergeSort(int[] data, int[] temp, int l, int r) { )hai?v~g
int i, j, k; ;M Z@2CO
int mid = (l + r) / 2; [M6/?4\
if (l == r) T3
k#6N.
return; mF !=H%
if ((mid - l) >= THRESHOLD) C\dlQQ
mergeSort(data, temp, l, mid); F
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else >#\&%0OZw
insertSort(data, l, mid - l + 1); TID0x/j"K5
if ((r - mid) > THRESHOLD) }ZWeb#\
mergeSort(data, temp, mid + 1, r); \4`2k
else $R<eXDW6:
insertSort(data, mid + 1, r - mid); DweWFipyPi
\i#0:3s.
for (i = l; i <= mid; i++) { +C !A@
temp = data; r3b~|O^}
} &c!=< <5M
for (j = 1; j <= r - mid; j++) { @*c) s_
temp[r - j + 1] = data[j + mid]; L"6@3
} 6Pa
jBEF
int a = temp[l]; QP e}rQnm
int b = temp[r]; \;A\ vQ[
for (i = l, j = r, k = l; k <= r; k++) { D0&{iZ(
if (a < b) { N]sX
r
data[k] = temp[i++]; Eqva]
4
a = temp; aJ Du_
} else { RFu]vFff
data[k] = temp[j--]; c!%:f^7g
b = temp[j]; 'HV}Tr
} PF(P"f.?D
} c};Qr@vpo
} O({-lI
:Y [r^=>
/** Yg#)@L
* @param data s"?&`S
* @param l xf@D<}~1
* @param i :8aIj_qds
*/ K9*#H(
private void insertSort(int[] data, int start, int len) { .W&rcqy
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <ZNa`
} m H'jr$ ?
} STmCj
} F#^ .L|d4
} ;D[b25
jL)aU> kN
堆排序: 5\tYs=>b<
yXw xq(32
package org.rut.util.algorithm.support; U<NpDjc"
g5to0
import org.rut.util.algorithm.SortUtil; \?fl%r2
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/** ?^&!/,
* @author treeroot ls6ywLP{
* @since 2006-2-2 s^9N7'
* @version 1.0 "FaG5X(
*/ JCZJ\f*EZ
public class HeapSort implements SortUtil.Sort{ f(?`PD[
+Z[%+x92
/* (non-Javadoc) 0p$?-81BJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9bXU!l[
*/ }~-)31e'`
public void sort(int[] data) { \'"q6y
MaxHeap h=new MaxHeap(); -zz9k=q
h.init(data); ][bz5aV
for(int i=0;i h.remove(); _ #l b\
System.arraycopy(h.queue,1,data,0,data.length); );;UNO21+
} Z-H Kdv!d
u6jJf@!ws
private static class MaxHeap{ (s{%XB:K
s:cS 9A8
void init(int[] data){ 0tB9X9 :,
this.queue=new int[data.length+1]; Zk}e?Grc
for(int i=0;i queue[++size]=data; ?#D@e5Wf
fixUp(size); 2#1FI0,Pa*
} $X~=M_W
} =W ! m`
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private int size=0;
v-[|7Pg}Z
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private int[] queue; m$hSL4N
O,JthlAV4
public int get() { g)&-S3\
return queue[1]; uD:O[H-x
} r:Cad0xj;^
Q:VD2<2
public void remove() { ,bmTBZV
SortUtil.swap(queue,1,size--); a$t [}D2
fixDown(1); nhXa&Nro
} n3b@6V1_
file://fixdown <k^9l6@
private void fixDown(int k) { >o>'@)I?e6
int j; B{1+0k
while ((j = k << 1) <= size) { 6x/ X8zu
if (j < size %26amp;%26amp; queue[j] j++; 6nGDoW#
if (queue[k]>queue[j]) file://不用交换 rzaEVXbz1
break; ! 2Y,
a
SortUtil.swap(queue,j,k); l/rhA6kEU
k = j; gYzKUX@
} 9f l !CG
} {Y'_QW1:2
private void fixUp(int k) { YN>#zr+~
while (k > 1) { ?QVD)JI*k
int j = k >> 1; e$>5GM
if (queue[j]>queue[k]) F/EHU?_EI
break; [S</QS!
SortUtil.swap(queue,j,k); <!OP b(g2
k = j; tg8VFH2q.z
} 29Q5s$YD@
} [sNn^x
S-f3rL[?
} 2,QkktJLo
qs-:JmA_w
} \HK#d1>ox
(uV7N7 <1
SortUtil: U-n33ty`H
ax>c&%vo
package org.rut.util.algorithm; @fE^w^K7
cF vGpZ
import org.rut.util.algorithm.support.BubbleSort; (c[h,>`@:
import org.rut.util.algorithm.support.HeapSort; *.nqQhW
import org.rut.util.algorithm.support.ImprovedMergeSort; /CA)R26G
import org.rut.util.algorithm.support.ImprovedQuickSort; v@t*iDa?7
import org.rut.util.algorithm.support.InsertSort; 3UN Jj&-`
import org.rut.util.algorithm.support.MergeSort; !&'xkw `
import org.rut.util.algorithm.support.QuickSort; &aF_y_f\
import org.rut.util.algorithm.support.SelectionSort; %W&=]&L
import org.rut.util.algorithm.support.ShellSort; A&t'uY6
swLgdk{8n
/** :&or'Yi}
* @author treeroot |g'sRTKJ
* @since 2006-2-2 nM0nQ{6
* @version 1.0 nW drVT$
*/ 10}Zoq|)n
public class SortUtil { hCxL4LrF
public final static int INSERT = 1; g:o\ r
(
public final static int BUBBLE = 2; nev*TYY?A
public final static int SELECTION = 3; }lxvXVc{I
public final static int SHELL = 4; Bnxzy
n
public final static int QUICK = 5; ReK@~#hLY
public final static int IMPROVED_QUICK = 6; )7i?8XiSZF
public final static int MERGE = 7; l5h9Eq
public final static int IMPROVED_MERGE = 8; 3mm`8!R
public final static int HEAP = 9; IYQYW.`ly
Dh9-~}sW'
public static void sort(int[] data) { l[fNftT-
sort(data, IMPROVED_QUICK); %MjPQ
} yh0|f94m
private static String[] name={ %*19S.=l
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }zobIfIF
}; &J~S $
%~W}262
private static Sort[] impl=new Sort[]{ W#lvH=y
new InsertSort(), f^%E]ki
new BubbleSort(), -91l"sI
new SelectionSort(), y2qESAZ%k}
new ShellSort(), SY$%!!
@R
new QuickSort(), cLYc""=
new ImprovedQuickSort(), VmUM_Q~
new MergeSort(), f<}!A$wd
new ImprovedMergeSort(), n]$vCP
new HeapSort() 5AjK7[<L
}; |@@mq!>-
./fEx
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public static String toString(int algorithm){ ~F(+uJbO
return name[algorithm-1]; RV$+g.4
} "FXS;Jf
tAC,'im:*
public static void sort(int[] data, int algorithm) { FI/YJ@21
impl[algorithm-1].sort(data); zhCI+u4/qz
} )-QNWN
H
18n84RkI9
public static interface Sort { `Eu(r]:W
public void sort(int[] data); Gz6GU.IyQy
} {//F>5~[
8uGPyH
public static void swap(int[] data, int i, int j) { Ffxk] o&%c
int temp = data; 7O9s5
data = data[j]; g~y9j88?
data[j] = temp; kCC9U_dj,
} v|/3Mi9mz
} !:n),sFv45