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。 !d9AG|
插入排序: GO5 ~!g
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package org.rut.util.algorithm.support; o4=Yu7L
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import org.rut.util.algorithm.SortUtil; POU}/e!Ua
/** \Mi#{0f+q
* @author treeroot {,O`rW_eS
* @since 2006-2-2 /c+)C"
* @version 1.0 F@YV]u>N
*/ >HkhAJhW
public class InsertSort implements SortUtil.Sort{ qJ[@:&:
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/* (non-Javadoc) BH :
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _py2kjA6
*/ 2f:Mm'XdB
public void sort(int[] data) { }WP-W
int temp; r!/0 j)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DOL%'k ?B
} DacJ,in_I{
} Nh)[rx
} -a) T6:e
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} K%,$ V,#
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冒泡排序: /! ^P)yU,
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package org.rut.util.algorithm.support; a20w,
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import org.rut.util.algorithm.SortUtil; 6
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/** ,8SWe
* @author treeroot YQ,tt<CQ
* @since 2006-2-2 V;[p438o
* @version 1.0 M9V-$ _)
*/ $N.`)S<
public class BubbleSort implements SortUtil.Sort{ 8Uj:
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/* (non-Javadoc) ?6:cNdN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )}|mDN&P
*/ G\/IM
public void sort(int[] data) { k46gY7y,9
int temp; o8D{dS>,PL
for(int i=0;i for(int j=data.length-1;j>i;j--){ dM|g`rr
E
if(data[j] SortUtil.swap(data,j,j-1); IvSn>o
} eti9nPjG
} R@ QQNYU.D
} G `Izf1B`I
} 4_<
nQ9K
Es:6
} OWV/kz5'H
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选择排序: "8t\MKt(
;tN4HiN
package org.rut.util.algorithm.support; &l!$Sw-u;
k.>6nho`TV
import org.rut.util.algorithm.SortUtil; Sf5]=F-w
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/** 4.k`[q8
* @author treeroot BA`:miH<
* @since 2006-2-2 DrFu r(=T
* @version 1.0 u[mY!(>nQ
*/ '8Qw:f h
public class SelectionSort implements SortUtil.Sort { SEU\}Ni{
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/* CSH`pU
* (non-Javadoc) ,]U[W
* |<2
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /.2u.G
*/ ]F_r6 *<
public void sort(int[] data) { xtsL8-u f
int temp; aYBTrOd z
for (int i = 0; i < data.length; i++) { To^#
0
int lowIndex = i; $"1pws?d
for (int j = data.length - 1; j > i; j--) { ,$PFI(Whk
if (data[j] < data[lowIndex]) { [lOf|^9
lowIndex = j; *k!(ti[
} p}f-c
} 'FqEB]gu
SortUtil.swap(data,i,lowIndex); BP:(IP!&
} Kc-4W6?$
} /+N|X
Gb?g,>C
} TIETj~+
!+=Zjm4L
Shell排序: v*vn<nPAQ>
>6k}HrS1V
package org.rut.util.algorithm.support; PM8Ks?P#u
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import org.rut.util.algorithm.SortUtil; k=ts&9\
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/** 0 K/G&c?;=
* @author treeroot x'zihDOI
* @since 2006-2-2 xl3zy~;M
* @version 1.0 keaj3#O
*/ }$<^wt
public class ShellSort implements SortUtil.Sort{ .<HC[ls
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/* (non-Javadoc) {v,{x1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q:pzL
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*/ =?HzNA$yh
public void sort(int[] data) {
Ny.*G@&
for(int i=data.length/2;i>2;i/=2){ mF}c-
D
for(int j=0;j insertSort(data,j,i); xv^Sh}\}
} !O 4<I_EY{
} (1rJFl!
insertSort(data,0,1); (*MNox?w
} 6k:y$,w
c%ZeX%p
/** `bzr_fJ
* @param data qQL.c+%L
* @param j El'yiJ
* @param i gxI&f
*/ .N/GfR`0/<
private void insertSort(int[] data, int start, int inc) { ^p$1D
int temp; <b6s&"%=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |3 ;u"&(P
} IhUW=1&J
} vc )9Re$
} ~B<97x(X
C/CN
'
}
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快速排序: XpR.rq$]
5.O-(eSa0&
package org.rut.util.algorithm.support; ri#,ec|J
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import org.rut.util.algorithm.SortUtil; y*}AX%8`e~
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/** aZ I>x^X
* @author treeroot I0I_vu
* @since 2006-2-2 lr`?yn1D(
* @version 1.0
;&K3[;a
*/ Rl y jOf{0
public class QuickSort implements SortUtil.Sort{ NR;q`Xe-
`oB' (
/* (non-Javadoc) =*{K@p_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BO8%:/37[4
*/ )\um"l*\c
public void sort(int[] data) { o,g6JTh
quickSort(data,0,data.length-1); _2]e1_=
} {'h)
private void quickSort(int[] data,int i,int j){ Tq9,c#}&
int pivotIndex=(i+j)/2; iSOD&J_
file://swap qRgK_/[]
SortUtil.swap(data,pivotIndex,j); pZc9q8j3
Coga-: 2vu
int k=partition(data,i-1,j,data[j]); 1f+*Tmc5]Q
SortUtil.swap(data,k,j); .Ql;(Wyl
if((k-i)>1) quickSort(data,i,k-1); u86J.K1Q
if((j-k)>1) quickSort(data,k+1,j); p#ZMABlE,P
}9MW!Ss
} |hu"5*
/** #rh0r`
* @param data 9c"0~7v
* @param i `Mo~EHso.
* @param j hp?ad
* @return 1joc<EI
*/ 38"8,k
private int partition(int[] data, int l, int r,int pivot) { Q'FX:[@x-S
do{ ph Wc8[Q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VFe-#"0ZO
SortUtil.swap(data,l,r); #gxRTx
} >g5T;NgH9
while(l SortUtil.swap(data,l,r); ~J8cS
return l; |usnY
} $ka1X&f
]3gYuz|
} Da9* /
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改进后的快速排序: v&t`5-e-A
!1ie:z>s
package org.rut.util.algorithm.support; jK ?
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import org.rut.util.algorithm.SortUtil; sRkz
WMl
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/** y>)mSl@1y
* @author treeroot +^^S'mP8
* @since 2006-2-2 DI$mD{
* @version 1.0 htdn$kqG
*/ w]]x[D]L
public class ImprovedQuickSort implements SortUtil.Sort { EvGU j$
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private static int MAX_STACK_SIZE=4096; Nlf&]^4(0
private static int THRESHOLD=10; sT;=7L<TA
/* (non-Javadoc) U 8qKD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7|{%CckN
*/ (&N$W&
public void sort(int[] data) { 8KtF<`A)
int[] stack=new int[MAX_STACK_SIZE]; |-cALQ
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int top=-1; >$k4@eg!
int pivot; `9G$p|6
int pivotIndex,l,r; P /f ~
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stack[++top]=0; l*m]2"n]
stack[++top]=data.length-1; ]R2Z -2
q) zu}m
while(top>0){ ^<5^9]x
int j=stack[top--]; N2S!.H!Wz
int i=stack[top--]; .{Eg(1At
%_i0go,^
pivotIndex=(i+j)/2; *}Ae9
pivot=data[pivotIndex]; a#^4xy:
6|(7G64{
SortUtil.swap(data,pivotIndex,j); `6l24_eKf
P[J qJi/H
file://partition Z?G3d(YT
l=i-1; &caO*R<#J}
r=j; ={&TeMMA
do{ 5p>]zij>
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); XTn{1[.O
SortUtil.swap(data,l,r); ud~VQXZo
} t g m{gR
while(l SortUtil.swap(data,l,r); ,y{fqa4
SortUtil.swap(data,l,j);
5G]#'tu
C Ol%P
if((l-i)>THRESHOLD){ eJwii
stack[++top]=i; *b 7
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stack[++top]=l-1; 0"D?.E"$r
} 56~da ){gd
if((j-l)>THRESHOLD){ jWb\"0)
stack[++top]=l+1; 9#=IrlV4
stack[++top]=j; -QHzf&D?
} tX2>a
b ffml
} eB1eUK>
file://new InsertSort().sort(data); Ml_:Q]kl^
insertSort(data); *IfIRR>3l(
} oCru 5F
/** EPUJa~4
* @param data ?[|4QzR
*/ q~A|R
private void insertSort(int[] data) { Z;> aW;Wt
int temp; W9V=hQ2
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]H@uuPT!
} AXv3jH,HF
} f>JzG,-
} {&AT}7
=P+wp{?AN|
} -T="Ml&
:$@zX]?M
归并排序: L bK1CGyA
TbUkqABm
package org.rut.util.algorithm.support; Q?'W >^*J
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import org.rut.util.algorithm.SortUtil; 0|3B8m
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/** }t{^*(
* @author treeroot i3\oy`GJ
* @since 2006-2-2 ^K@GK
* @version 1.0 Dl!'_u
*/ xuC6EK+
public class MergeSort implements SortUtil.Sort{ ZkG##Jp\>
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/* (non-Javadoc) P6Ol+SI#m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z:q'?{`I
*/ 91'^--N
public void sort(int[] data) {
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int[] temp=new int[data.length]; 6I'VXdeN
mergeSort(data,temp,0,data.length-1); W;j)ux7jMY
} -^%"w
u(Q(UuI
private void mergeSort(int[] data,int[] temp,int l,int r){ ]7ZC>.t
int mid=(l+r)/2; p~y
4q4
if(l==r) return ; WxI]Fcb<
mergeSort(data,temp,l,mid); l%V}'6T
mergeSort(data,temp,mid+1,r); LA(JA
for(int i=l;i<=r;i++){ W;*vcbP
temp=data; #k]0[;1os
} 6#-; ,2i
int i1=l; Tl{r D(D
int i2=mid+1; SVeU7Q6-
for(int cur=l;cur<=r;cur++){ R1rfp;
if(i1==mid+1) {;gWn'aq
data[cur]=temp[i2++]; )bJ6{&
else if(i2>r) eHZl-|-
data[cur]=temp[i1++]; [?(W7
else if(temp[i1] data[cur]=temp[i1++]; KPK!'4,cu
else w6Ny>(T/
data[cur]=temp[i2++]; ^E,UcK;
} 2]KPW*V
} '4S@:.D`
Vc<n6
} un%"s:
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改进后的归并排序: P?-44m#
jYx(
package org.rut.util.algorithm.support; `qEm5+`
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import org.rut.util.algorithm.SortUtil; M& L0n%,y5
rx)Q]
/** 6<O]_ HZ&
* @author treeroot gpl!Iz~5
* @since 2006-2-2 rI$10R$+H
* @version 1.0 zL}DLfy>R
*/ ZPog)d@!
public class ImprovedMergeSort implements SortUtil.Sort { Jk{2!uP
LB0=V0|
private static final int THRESHOLD = 10; +#9 (T
Unk+@$E&
/* ioQlC4Y
* (non-Javadoc) jt*@,+e|
* nr6U>
KR^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =l{KYv
*/ \}c50}#0
public void sort(int[] data) { p8bTR!rvz
int[] temp=new int[data.length]; s47"JKf"
mergeSort(data,temp,0,data.length-1); EPfVS
} breVTY7 S
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private void mergeSort(int[] data, int[] temp, int l, int r) { `_kRvpi
int i, j, k; A}O9e
int mid = (l + r) / 2; 3j#F'M)s{
if (l == r) YkbLf#2AE|
return; ;bmd<1
if ((mid - l) >= THRESHOLD) eGg#=l=
mergeSort(data, temp, l, mid); 2j|Eh
else 4Yk(ldR~
insertSort(data, l, mid - l + 1); CdjGYS
if ((r - mid) > THRESHOLD) 21Opx~T3
mergeSort(data, temp, mid + 1, r); .$;GVJ-:5
else 1Zzw|@#>o
insertSort(data, mid + 1, r - mid); S6I8zk)Z4
5}VP-04vh
for (i = l; i <= mid; i++) { Qmn5-yiw1d
temp = data; *a4eL [
} ':@qE\(
for (j = 1; j <= r - mid; j++) { +/'jX?7x%
temp[r - j + 1] = data[j + mid]; $cedO']
} 75ob1h"
int a = temp[l]; ujedvw;sO
int b = temp[r]; ;2~Q97c0
for (i = l, j = r, k = l; k <= r; k++) { I
Cs1=
if (a < b) { 8V=o%[t
data[k] = temp[i++]; bzS [X
a = temp; sa($3`d
} else { P^ VNB
data[k] = temp[j--]; 3&
$E
b = temp[j]; >F
v8 -
} 7+bzCDKU
} 6=k^gH[g
} W\ckt]'
y{<7OTA)
/** bB["Qd}Q
* @param data `y(3:##p
* @param l S/|8'x{<
* @param i P:+:Cm<
*/ qA42f83
private void insertSort(int[] data, int start, int len) { 622).N4
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (46)v'?
} *SZ<ori
} 0NGokaD)H
} *4bV8T>0Z
} FpEdwzBb<
N'StT$(
堆排序: %k~=iDk@
1,E/So
package org.rut.util.algorithm.support; %AFy{l
R B!g,u
import org.rut.util.algorithm.SortUtil; R OS0Q9X
QB7<$Bp
/** 711z-
* @author treeroot p5*Y&aKj
* @since 2006-2-2 Wd7*sa3T
* @version 1.0 px*MOHq K
*/ 1/ a,7Hl
public class HeapSort implements SortUtil.Sort{ 86i =N_
.IqS}Rh
/* (non-Javadoc) `fH6E8N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u=4Rn
*/ 1DX=\BWp
public void sort(int[] data) { IpWl;i`__
MaxHeap h=new MaxHeap(); C-(&zwj?!
h.init(data); 5Z@Q^
for(int i=0;i h.remove(); *(rq AB0~
System.arraycopy(h.queue,1,data,0,data.length); sG3%~
} "}n]0 >J
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&h;
private static class MaxHeap{ 09Fr1PL
UwLa9Dn^
void init(int[] data){ w$p v
this.queue=new int[data.length+1]; 7"gy\_M
for(int i=0;i queue[++size]=data; )3 ;S;b
fixUp(size); "m!Cl-+u
} -kJ`gdS
} *ce h
]v
G B15
private int size=0; 4 1Ru@
?vXy7y&4
private int[] queue; H)5]K9D
P%1s6fjU
public int get() { |2mEowAd
return queue[1]; yPL@uCzA@
} LB>!%Vx
Uu
G;z5
public void remove() { x{=ty*E
SortUtil.swap(queue,1,size--); km *$;Nli
fixDown(1); O%)w!0
}
hp)3@&T
file://fixdown pBHr{/\5
private void fixDown(int k) { *b> ~L
int j; $Q62
7
while ((j = k << 1) <= size) { n84*[d}t
if (j < size %26amp;%26amp; queue[j] j++; *r%=p/oQ}B
if (queue[k]>queue[j]) file://不用交换 f@Db._E
break; E}~GX G
SortUtil.swap(queue,j,k); zE<}_nA
k = j; n]|[|Rf1
} 9'}m797I'
} 'l2`05
private void fixUp(int k) { a6[bF
while (k > 1) { @;pTQ
5
I
int j = k >> 1; z55P~p
if (queue[j]>queue[k]) Zx3m$.8
break; lE /"
SortUtil.swap(queue,j,k); OD{Rh(Id
k = j; 3rs=EMz:w
} !tN]OQ)'
} ;+cZS=
^lf)9 `^U
} $6R<)]6
LvB -%@n
} ^*RmT
6:@tHUm
SortUtil: =Bl#CE)X
V*LpO8=
package org.rut.util.algorithm; Jgb{Tl:r
F8.Fp[_tM
import org.rut.util.algorithm.support.BubbleSort; !DXKn\aQf
import org.rut.util.algorithm.support.HeapSort; jf@#&%AC9
import org.rut.util.algorithm.support.ImprovedMergeSort; V9][a
import org.rut.util.algorithm.support.ImprovedQuickSort; [/6IEt3}B
import org.rut.util.algorithm.support.InsertSort; 1jO/"d.8n
import org.rut.util.algorithm.support.MergeSort; y~jTI[kS
import org.rut.util.algorithm.support.QuickSort; [
q22?kT
import org.rut.util.algorithm.support.SelectionSort; ~#N^@a
import org.rut.util.algorithm.support.ShellSort; D>PB|rS@
%
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/** XzkC ]e'
* @author treeroot !Hxx6/
* @since 2006-2-2 zq8LQ4@ay
* @version 1.0 Kb#py6
*/ ["kk.*&
public class SortUtil { C&D!TR!K
public final static int INSERT = 1; skf7Si0z
public final static int BUBBLE = 2; 7&qunK'
public final static int SELECTION = 3; ['Hl$2 j
public final static int SHELL = 4; 8 W79
public final static int QUICK = 5; \IQf|
public final static int IMPROVED_QUICK = 6; ?l
&S:`
L
public final static int MERGE = 7; k7'_
public final static int IMPROVED_MERGE = 8; =bi:<%"
public final static int HEAP = 9; B~G?&"]
%@Bl,!BJ,
public static void sort(int[] data) { ]%!:'#
sort(data, IMPROVED_QUICK); r8A
} KC[ql}JP
private static String[] name={ *0^!%Y'/4
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xrs?"]M[
}; *VG#SK
|@`F!bnLr
private static Sort[] impl=new Sort[]{ @FKm_q
new InsertSort(), kj{z;5-dl
new BubbleSort(), R?Vs8?
new SelectionSort(), @GNNi?EY
new ShellSort(), W2?6f:
new QuickSort(), G>&Ta p>
new ImprovedQuickSort(), j^-E,YMC
new MergeSort(), M_lQ^7/
new ImprovedMergeSort(), CoO..
new HeapSort() >\6Tm
}; .fY1?$*6c
T a8;
public static String toString(int algorithm){ aDceOhfx
return name[algorithm-1]; A/ZZ[B-
} jeXP|;#Una
v'na{"
public static void sort(int[] data, int algorithm) { ]/g&y5RG
impl[algorithm-1].sort(data); T5H[~b|9-
} .$&mWytw=
[CxnGeKK
public static interface Sort { ldk (zAB.
public void sort(int[] data); ;\-f7!s
} @`t#Bi9
G%5bQ|O
public static void swap(int[] data, int i, int j) { tQ~vLPi$
int temp = data; rHYSS0*3
data = data[j]; @pq2Z^SQ H
data[j] = temp; y.vYT{^
} a4{~.Mp
} wzX(]BG