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。 -Cn x!g}
插入排序: j(aok5:e
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package org.rut.util.algorithm.support; EBQ,Ypv
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import org.rut.util.algorithm.SortUtil; :O?+Ywn
/** UP<B>Y1a
* @author treeroot \7V[G6'{
* @since 2006-2-2 Sb QM!Q
* @version 1.0 !LI
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*/ DP@F-Q4
public class InsertSort implements SortUtil.Sort{ jJ.isr|`
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/* (non-Javadoc) K&"ZZFd_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) itYTV?bd
*/ LI}@qLe
public void sort(int[] data) { *ggai?
int temp; \]Bwib%h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pk?M~{S
} m>FP&~2
} #'y4UN
} bU$f4J
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} Wf!u?nH.5
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冒泡排序: ;9MIapfUd(
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package org.rut.util.algorithm.support; zp'Vn7
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import org.rut.util.algorithm.SortUtil; }'`iJb\
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/** V}aZ}m{J
* @author treeroot *-eDUT|O
* @since 2006-2-2 $V870
<
* @version 1.0 Mni@@W
*/ Zjkg"
public class BubbleSort implements SortUtil.Sort{ \"7U,y',
'w"hG$".
/* (non-Javadoc) Xk>YiV",?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BAIR!
*/ JZup} {a
public void sort(int[] data) { 7lUnqX.
int temp; MA,7|s
for(int i=0;i for(int j=data.length-1;j>i;j--){ ()MUyW"S#`
if(data[j] SortUtil.swap(data,j,j-1); L3;cAb/
} b3.}m[]
} xLShMv}
} +\x}1bNS%j
} $y_P14
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} C2;Hugm4
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选择排序: jdf3XTw
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package org.rut.util.algorithm.support; ,p' ;Xg6ez
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import org.rut.util.algorithm.SortUtil; HVz|*?&6
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/** YH,u*.I^/
* @author treeroot g1{2E<b5
* @since 2006-2-2 rM0Idc.$&&
* @version 1.0 N{&Hq4^c
*/ m)ENj6A>yP
public class SelectionSort implements SortUtil.Sort { +JejnG0
Ake$M^Bz
/* Yln[ZmK9g
* (non-Javadoc) !NO)|N>
* aZ'(ar:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |hD)=sCj
*/ g[L}puN
public void sort(int[] data) { P$v9
int temp; y=&^=Zh[
for (int i = 0; i < data.length; i++) { LI9
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int lowIndex = i; @(CJT-Ak
for (int j = data.length - 1; j > i; j--) { E$C0\O!7
if (data[j] < data[lowIndex]) { m% %\k
\
lowIndex = j; VmON}bb[zz
} [_-[S
} GK&R,q5}
SortUtil.swap(data,i,lowIndex); R4%}IT^%P
} )mu[ye"p
} BIxjY!!"
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} Ksf f]##H
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Shell排序: IFbN ]N0
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package org.rut.util.algorithm.support; &PUn,9 Rm
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import org.rut.util.algorithm.SortUtil; wBz5_ OFVw
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/** | Zj=E$
* @author treeroot s x2\
* @since 2006-2-2 +[":W?j
* @version 1.0 7|DPevrk
*/ [5-3PuT&9
public class ShellSort implements SortUtil.Sort{ $T7(AohR
H`OJN.
/* (non-Javadoc) y4%[^g~-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,56objaE
*/ `Y,<[ Lnr
public void sort(int[] data) { 6&KcO:}-
for(int i=data.length/2;i>2;i/=2){ ^WUG\@B
for(int j=0;j insertSort(data,j,i); e"cvo(}g
} '_l5Br73=
} ~=t K17i
insertSort(data,0,1); r*g<A2g%
} /DX6Hkkj %
"b[w%KYyl
/** O4oI&i 7
* @param data nEgYypwr
* @param j 4Un%p7Y~
* @param i ;3&HZq6Z (
*/ Gj&`+!\
private void insertSort(int[] data, int start, int inc) { S\0?~l"}
int temp; :+Tvq,/"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
Xz!O}M{4
} \<%?=C'w~
} JgMYy,q8t
} <_#a%+5d
}CQ)W1mO"
} .$zo_~ mR
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快速排序: H'?dsc
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package org.rut.util.algorithm.support; }3=^Ik;x
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import org.rut.util.algorithm.SortUtil; )#v0.pE
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/**
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* @author treeroot ^q\9HBHT
* @since 2006-2-2 K?6#jT6#
* @version 1.0 ]O0:0Z\
*/ @i(;}rx
public class QuickSort implements SortUtil.Sort{ {7^D!lis
p9gX$-!pbG
/* (non-Javadoc) \*\ )zj*r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K9c5HuGy
*/ bj_oA
i
public void sort(int[] data) { .-}F~FES
quickSort(data,0,data.length-1); lj 2OOU{
}
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private void quickSort(int[] data,int i,int j){ =6xxZy[
int pivotIndex=(i+j)/2; wY*tq{7
file://swap aK]H(F2#
SortUtil.swap(data,pivotIndex,j); sh;>6xB
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int k=partition(data,i-1,j,data[j]); u.,l_D_
SortUtil.swap(data,k,j); I5#zo,9
if((k-i)>1) quickSort(data,i,k-1); NU%<Ws=
if((j-k)>1) quickSort(data,k+1,j); hIFfvUl
:\KJw
} i|CAN,'
/** u%AyW
* @param data b2XUZ5
* @param i ,2]a<0m
* @param j Qn`Fq,uvL
* @return v|wO qS
*/ gJ?Vk<hp
private int partition(int[] data, int l, int r,int pivot) { M"E7=J
do{ oNp(GQ@0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z?)=4|
SortUtil.swap(data,l,r); CYZ0F5+t
} n0opb [ ?
while(l SortUtil.swap(data,l,r); 0l2@3}e
return l; fu{.Ir
} ~c${?uf
{J]x81}*;
} 7(B"3qF8|
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改进后的快速排序: hi^t zpy
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package org.rut.util.algorithm.support; Bb*P);#.K
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import org.rut.util.algorithm.SortUtil; ~
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/** qORRpWyx&
* @author treeroot
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* @since 2006-2-2 ObSRd$M
* @version 1.0 aLO'.5
~^
*/ 8Lr&-w8J
public class ImprovedQuickSort implements SortUtil.Sort { UOcO\EA+
o>o! -uf
private static int MAX_STACK_SIZE=4096; >rid3~
private static int THRESHOLD=10; ?VR:e7|tU
/* (non-Javadoc) 4x2,X`pe3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P:fcbfH+
*/ E@7);i5K
public void sort(int[] data) { x#}{z1op9
int[] stack=new int[MAX_STACK_SIZE]; g @qrVQv
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int top=-1; ;CLOZ{
int pivot; @aUQy;
int pivotIndex,l,r; E{xcu9
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stack[++top]=0; :bu]gj4e
stack[++top]=data.length-1; ><H*T{
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while(top>0){ .?)gn]#
int j=stack[top--]; 6 B*,Mu4A
int i=stack[top--]; mH/9J
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pivotIndex=(i+j)/2; wOF";0EN
pivot=data[pivotIndex]; rLp (}^
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SortUtil.swap(data,pivotIndex,j); -;j
'=?
69$gPY'3
file://partition y8$I=
l=i-1; Sq[LwJ
r=j; 9_xJT^10
do{ h Nx#x
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1s6L]&B
SortUtil.swap(data,l,r); XxLauJP
K
} Y|~+bKa
while(l SortUtil.swap(data,l,r); D"8 ?4+
SortUtil.swap(data,l,j); CZw]@2/JuQ
T1i}D"H %
if((l-i)>THRESHOLD){ oyq9XW~ D
stack[++top]=i; -d_7 q
stack[++top]=l-1; n>W*y|UJ
} 4x"9Wr=}
if((j-l)>THRESHOLD){ &sg~owz
stack[++top]=l+1; _ls i,kg?
stack[++top]=j; x`Jh NAO>
} !dGSZ|YZ
Z\>mAtm
} ?<STl-]&
file://new InsertSort().sort(data); SYwB
#|
insertSort(data); GL'l "L
} `%Dz 8Z
/** 8C8,Q\WV(~
* @param data q}cm"lO$
*/ )<[)7`
private void insertSort(int[] data) { [^0 S#,L
int temp; pYz\GSd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N;R I
A
} T7?cnK"
} 0[.T`tpN'
} a~&euT2
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} 2 `U+
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归并排序: v4vIcHDs
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; vJ{aBx`VS
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/** Y(B3M=j
* @author treeroot Sy"!Q%+|
* @since 2006-2-2 c0QKx=
* @version 1.0 `Jn2(+
*/ y&6 pc
public class MergeSort implements SortUtil.Sort{ (D2N_l(`<
.O6(QI*
/* (non-Javadoc) %/w%A:y#&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ni>!b6Z`[
*/ w@x||K= Z
public void sort(int[] data) { yR1v3D4E
int[] temp=new int[data.length]; d-`z1'
mergeSort(data,temp,0,data.length-1);
::sk)
} 0SV4p.
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private void mergeSort(int[] data,int[] temp,int l,int r){ b=XXp`h~a
int mid=(l+r)/2; qaG8:
if(l==r) return ; dy3fZ(=q^
mergeSort(data,temp,l,mid); T\w{&3ONm
mergeSort(data,temp,mid+1,r); }6!m Q
for(int i=l;i<=r;i++){ om2)Cd9~7
temp=data; mr>dZ)
} P(aN6)D
int i1=l; >E9 k5
int i2=mid+1; YK>?;U+|
for(int cur=l;cur<=r;cur++){ }///k]_Sh
if(i1==mid+1) X+QoO=02LR
data[cur]=temp[i2++]; sFw;P`
else if(i2>r) g17 fge6%
data[cur]=temp[i1++]; O96%U$W
else if(temp[i1] data[cur]=temp[i1++]; }U@(S>,%
else 9k;%R5(
data[cur]=temp[i2++]; <-"[9 w
} w+gPU1|(r
} KJ
cuZ."wX
4}NCdGD
} Qrw:Bva)
b<j*;n.
改进后的归并排序: 5M\bH'1
f&!{o=
package org.rut.util.algorithm.support; |:pBk:
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import org.rut.util.algorithm.SortUtil; LwcAF g|
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/** 7X <#
* @author treeroot Y'yGhpT~
* @since 2006-2-2 ;%Kh~
* @version 1.0 M8${&&[;
*/ t8.^Y TI
public class ImprovedMergeSort implements SortUtil.Sort { Bdm05}c@u
~uu{
v')
private static final int THRESHOLD = 10; ^/)%s 3
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/* mD7kOOMY
* (non-Javadoc) dy4~~~^A
* ^00C"58A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =>L2~>[
*/ !+(H(,gI
public void sort(int[] data) { =-]NAj\
int[] temp=new int[data.length]; aSIoq}c(
mergeSort(data,temp,0,data.length-1); h/]));p
} dg#w!etB
]v#T9QQN
private void mergeSort(int[] data, int[] temp, int l, int r) { Bo0f`EC I
int i, j, k; Z@0IvI
int mid = (l + r) / 2; ZhFlR*EQ
if (l == r) X'p%K/-m
return; Qn}M
if ((mid - l) >= THRESHOLD) UZ!It>
mergeSort(data, temp, l, mid); _8e0vi!~2
else VjJ}q*/3e
insertSort(data, l, mid - l + 1); Bh;N:{&^Eu
if ((r - mid) > THRESHOLD) {bNVNG^
mergeSort(data, temp, mid + 1, r); }(!3)k7*
else h059 DiH
insertSort(data, mid + 1, r - mid); >dnDN3x
uOPLJ?%
for (i = l; i <= mid; i++) { 8aTo
TA7JA
temp = data; \f'=
} kV4,45r
for (j = 1; j <= r - mid; j++) { "] ]aF1
temp[r - j + 1] = data[j + mid]; ~0rvrDDg
} 6L3i
int a = temp[l]; NXOcsdcZu
int b = temp[r]; ;)z+dd#3
for (i = l, j = r, k = l; k <= r; k++) { lT_dzO
if (a < b) { .9q`Tf
data[k] = temp[i++]; RO| }WD)
a = temp; +|qw>1J(
} else { PV-B<Y
data[k] = temp[j--]; =g?k`vp
b = temp[j]; 3*N0oc^m
} aX?
tnDv
} W8M(@*
T
} Z<#h$XUA
Lc0=5]D
/** ;Qidf}:
* @param data =lL)g"xX
* @param l Tr,
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* @param i 3[<D"0#},
*/
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private void insertSort(int[] data, int start, int len) { aVp-Ps|r
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZUS06#t}
} j-wKm_M#jX
} rW+}3] !D/
} + aWcK6
} Li9>RY+3
;<#=|eD2
堆排序: 0a:@DOzT
Wm/0Pi
package org.rut.util.algorithm.support; 4ULdf|o P"
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import org.rut.util.algorithm.SortUtil; Q}#xfrprF
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/** ~-'-<-
* @author treeroot L&&AK`Ur3l
* @since 2006-2-2 <GSp%r
* @version 1.0
_+}f@&"
*/ oo|Nu+
public class HeapSort implements SortUtil.Sort{ K+`deH_d
} wx(P3BHD
/* (non-Javadoc) Mg&<W#$K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DS ;.)P"
*/ cyB2=,
public void sort(int[] data) { BzTzIo5
MaxHeap h=new MaxHeap(); ie7P^:T|+
h.init(data); Nt687
for(int i=0;i h.remove(); dg&GMo
System.arraycopy(h.queue,1,data,0,data.length); S2EV[K8#
} o0TB>DX$`
b{;LbHq+G
private static class MaxHeap{ $Km~x
x M{SFF
void init(int[] data){ 7{38g
this.queue=new int[data.length+1]; iyr<qtwK
for(int i=0;i queue[++size]=data; U "v=XK)!
fixUp(size); M|7][!<G!
} U5[r&Y
D
} #v*3-) 8
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private int size=0; }>_
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private int[] queue; i:H]Sb)<b
x^McUfdr|
public int get() { ol}}c6
return queue[1]; zIr4!|X
} G6s3\de#U
yUs/lI, Q
public void remove() { h;A~:}c,
SortUtil.swap(queue,1,size--); kb!W|l"PN
fixDown(1); %DKC/%
} er<_;"`1
file://fixdown |][PbN
D
private void fixDown(int k) { A-u!{F
int j; g\ H~Y@'{
while ((j = k << 1) <= size) { 2Hk21y\
if (j < size %26amp;%26amp; queue[j] j++; $F6GCM3Cx
if (queue[k]>queue[j]) file://不用交换 G`f|#-}
break; gi+FL_8CzU
SortUtil.swap(queue,j,k); !ZY1AhGZ
k = j; @]L$eOV_
} 3?TUt{3g
} JY%l1:}G3
private void fixUp(int k) { t-Ble
while (k > 1) { J)sOne
int j = k >> 1; AvB21~t&]
if (queue[j]>queue[k]) .e\PCf9v
break; lDVgW}o@
SortUtil.swap(queue,j,k); ^G
"Qp8 "
k = j; 4@0Z<8Mo
} cL4Xh|NBp
} yO@@-)$[y
&D&U!3~(
} Rp>%umDyL
j{@li1W@
} 1";s#Jq
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SortUtil: xPJ@!ks9
10_>EY`
package org.rut.util.algorithm; OX [r\
uEkGo5
import org.rut.util.algorithm.support.BubbleSort; ;aH3{TS
import org.rut.util.algorithm.support.HeapSort; 2#Qw
import org.rut.util.algorithm.support.ImprovedMergeSort; W+Ou%uv}S
import org.rut.util.algorithm.support.ImprovedQuickSort; :\^jIKvZ
import org.rut.util.algorithm.support.InsertSort; W>u{JgY
import org.rut.util.algorithm.support.MergeSort; sHQO*[[
import org.rut.util.algorithm.support.QuickSort; 9TEAM<b;
import org.rut.util.algorithm.support.SelectionSort; @B!gxW\C
import org.rut.util.algorithm.support.ShellSort; >^g\s]c[
.-1'#Z1T
/** 4}0Ry\
6
* @author treeroot %0vWyU:K9
* @since 2006-2-2 Ac\e>N
* @version 1.0 r+tHVh
*/ [buLo*C4:
public class SortUtil { +kq+x6&
public final static int INSERT = 1; `2y?(BJp
public final static int BUBBLE = 2; ~6{U^3
public final static int SELECTION = 3; gCbS$Pw
public final static int SHELL = 4; sIRfC<
/P
public final static int QUICK = 5; )GOio+{H
public final static int IMPROVED_QUICK = 6; )ib$*dmUP
public final static int MERGE = 7; QFFFxaeJg
public final static int IMPROVED_MERGE = 8; ^ZFK:|Ju
public final static int HEAP = 9; f,Am;:\ |
s<5P sR
public static void sort(int[] data) { ViU5l*n;
sort(data, IMPROVED_QUICK); p9&gKIO_m
} [@@EE>
y
private static String[] name={ <Vh}d/
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yoM^6o^,D
}; M3eFG@,
bQdu= s[
private static Sort[] impl=new Sort[]{ Rpj{!Ia
new InsertSort(), N9~'\O$'7
new BubbleSort(), x#hSN|'"
new SelectionSort(), s\Ln
new ShellSort(), /Eu|Jg=I
new QuickSort(), >uFFTik
new ImprovedQuickSort(), whFJ]
new MergeSort(), K1p. {
new ImprovedMergeSort(), :mt<]Oy3
new HeapSort() i"mQ
}; sAnb
&d]@$4u$;
public static String toString(int algorithm){ wJu9.
return name[algorithm-1]; 8YQ7XB
} `chD*@76I
=&m;5R
public static void sort(int[] data, int algorithm) { [EK@f,iM
impl[algorithm-1].sort(data); 83VFBY2q
} R`,|08E
.etG>tH
public static interface Sort { yTf/]H]d
public void sort(int[] data); u5Mg
} uvi&! )x
g"\JiBb5
public static void swap(int[] data, int i, int j) { #X0Xc2}{f
int temp = data; g*!1S
data = data[j]; Bve',.xH
data[j] = temp; eV"Uv3
} *d31fBCk%
} ,:0!+1