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。 d
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插入排序: )uheV,ZnY
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package org.rut.util.algorithm.support; FN^FvQ
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import org.rut.util.algorithm.SortUtil; PaWr[ye
/** $`J_:H%
* @author treeroot #07!-)Gv
* @since 2006-2-2 t ^SzqB
* @version 1.0 eu#'SXSC
F
*/ #FH[hRo=6
public class InsertSort implements SortUtil.Sort{ "r'ozf2\
s?C&s|'.
/* (non-Javadoc) @xAfZb2 E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z#6?8y2-
*/ ,d_Gn!
public void sort(int[] data) { D(]E/k@;~
int temp; &
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YY5!_k
} y~
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} DAO]uh{6
} ]!
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} $8~e}8dt|
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冒泡排序: e' 9r"<>i
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package org.rut.util.algorithm.support; L{fFC%|l2L
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import org.rut.util.algorithm.SortUtil; I5ZqB B
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/** 9KuD(EJS
* @author treeroot G}nO@
* @since 2006-2-2 t18$x"\4k
* @version 1.0 9Ul(GI(
*/ yxWO[ Z
public class BubbleSort implements SortUtil.Sort{ 4JyM7ePND}
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/* (non-Javadoc) 9jir*UI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SPkn3D6
*/ ipE]}0q
public void sort(int[] data) { {KL5GowH
int temp; , X{>
for(int i=0;i for(int j=data.length-1;j>i;j--){ Z u*K-ep"
if(data[j] SortUtil.swap(data,j,j-1); !wz/cM;
} s>n(`?@L
} 9pKGr@ &
} jeUUa-zR3
} aHzHvl
b;cMl'
} q(M:QWA q
u9qMqeF
选择排序: \;X+X,M
5\fCd|
package org.rut.util.algorithm.support; zg)sd1@
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import org.rut.util.algorithm.SortUtil; eOT+'[3"
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/** qQ]]~F
* @author treeroot f .
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* @since 2006-2-2 C#0Qd%
* @version 1.0 5VW|fI
*/ q8P.,%
public class SelectionSort implements SortUtil.Sort { w8Sv*K
\*t~==WB
/* Y"g.IK`V
* (non-Javadoc) ,F6=b/eZ
* pc]J[ S?P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XRN+`J
*/ iUk-'
public void sort(int[] data) { _i0kc,*C\
int temp; t<iEj"5
for (int i = 0; i < data.length; i++) { X;F8_+Np
int lowIndex = i; I^\&y(LJF
for (int j = data.length - 1; j > i; j--) { *XOJnyC_H
if (data[j] < data[lowIndex]) { &EGqgNl
lowIndex = j; q'[}9e`Q
} w*9br SK
} 26?W
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SortUtil.swap(data,i,lowIndex); W#fZ1E6
} lCd@jB{
} 5K%SL1N
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} NE2pL@sk
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Shell排序: &
WOiik
Elj_,z
package org.rut.util.algorithm.support; )j l8!O7
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import org.rut.util.algorithm.SortUtil; K6JVg$
] ]U<UJ
/** Z4K+ /<I
* @author treeroot CBYX]
* @since 2006-2-2 PQmq5N6
* @version 1.0 75T_Dx(H
*/ f_ ^1J
public class ShellSort implements SortUtil.Sort{ 38ES($
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/* (non-Javadoc) IA zZ1#/3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WUc#)EEM)
*/ {~GYj%-^
public void sort(int[] data) { Rgy-OA
for(int i=data.length/2;i>2;i/=2){ f>o,N{|
for(int j=0;j insertSort(data,j,i); ,QIF &
} [jdFA<Is
} INs!Ame2
insertSort(data,0,1); e1myH6$W
} %VJ85^B3
lf<S_2i
/** ZIR0PQh\
* @param data P;[OWSR[d
* @param j 1F'1>Bu~
* @param i WO5O?jo'
*/ b3-eR5U/
private void insertSort(int[] data, int start, int inc) { }TQ{`a@
int temp; Am0{8
'
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Qhi '')Q
} Y/<lWbj*A
} '+>fFM,*B
} /
O/`<
7M_U2cd|TD
} gbeghLP[?
/I5X"x
快速排序: |'ln?D:&
n6d9\
package org.rut.util.algorithm.support; V"o7jsFH6n
Jf)bHjC_V
import org.rut.util.algorithm.SortUtil;
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/** #o/H~Iv
* @author treeroot 5Z/GK2[HL
* @since 2006-2-2 hRI"y":zD
* @version 1.0 >7`<!YJkK
*/ =o}"jVE
public class QuickSort implements SortUtil.Sort{ nMfFH[I4
/v|"0
/* (non-Javadoc) UUKP"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m"\:o
*/ .o1^Oh
public void sort(int[] data) { ,B(7\
quickSort(data,0,data.length-1); /iNa'W5\
} >SN|?|2U/
private void quickSort(int[] data,int i,int j){ 9Etz:?)b
int pivotIndex=(i+j)/2; iI@jZVk
file://swap .roqEasu8
SortUtil.swap(data,pivotIndex,j); v8gdU7Ll,
(6CN/A{qe
int k=partition(data,i-1,j,data[j]); M2x["
SortUtil.swap(data,k,j); #*$P'r
if((k-i)>1) quickSort(data,i,k-1); (iJ1
;x
if((j-k)>1) quickSort(data,k+1,j); 5J)=} e
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} +MbIB&fRCB
/** 'bGX-C
* @param data > oA?6x
* @param i l+V,DCE
* @param j QVF]Ci_=
* @return "Td`AuP@,
*/ 4nH*Ui!T
private int partition(int[] data, int l, int r,int pivot) { `-`qdda
do{ !UOCJj.cA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [%50/_h
SortUtil.swap(data,l,r); kg][qn|>J]
} jV#ahNq;
while(l SortUtil.swap(data,l,r); n?\ nn3
return l; `nKH"TaX
} )b<k#(i@#
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} (>6*#9#p
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改进后的快速排序: {e|*01hE
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package org.rut.util.algorithm.support; o-xDh7v
gj\)CBOv
import org.rut.util.algorithm.SortUtil; q#Zs\PD
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/** j*e6vX
* @author treeroot mNf8kwr
* @since 2006-2-2 pME{jD
* @version 1.0 ZKQ hbNT
*/ bWl5(S` Z
public class ImprovedQuickSort implements SortUtil.Sort { 4L-:*b_v\
{7cX#1
private static int MAX_STACK_SIZE=4096; EM7+VO(
private static int THRESHOLD=10; 2 oa#0`{
/* (non-Javadoc) %8*64T")
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {GvTfZfp
*/ V._6=ZJ
public void sort(int[] data) { "G-1>:
int[] stack=new int[MAX_STACK_SIZE]; aK,z}l(N
+,o0-L1D
int top=-1; <9=9b_z
int pivot; {QBB^px
int pivotIndex,l,r; x}U8zt)yD3
ze_{=Cv&Y
stack[++top]=0; Wv__ wZ
stack[++top]=data.length-1; `28};B>
%}86D[PF
while(top>0){ M
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int j=stack[top--]; B!gGK|8
int i=stack[top--]; $F.([?)k?
ELh8ltLY
pivotIndex=(i+j)/2; -",=G\XZ
pivot=data[pivotIndex]; y%sroI('y
{k4CEt;
SortUtil.swap(data,pivotIndex,j); UA[,2MBp
Cv$
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file://partition 9Rm/V5
l=i-1; f<+4rHT
r=j; bX.ja;;
do{ @i^~0A#q*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p^(&qk?ut
SortUtil.swap(data,l,r); Hk>79};
} 2=?tJ2E
while(l SortUtil.swap(data,l,r); ^:9$@+a
SortUtil.swap(data,l,j); 0Io'bF
$?,a[79
if((l-i)>THRESHOLD){ Tirux ;
stack[++top]=i; Xh J,"=E+
stack[++top]=l-1; 5TBp'7 /s~
} K"<PGOF
if((j-l)>THRESHOLD){ <Sz52Suh>
stack[++top]=l+1; h'
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stack[++top]=j; l5+gsEux]
} izKfU?2]X@
t_ksvWUo
} _k^0m
file://new InsertSort().sort(data); Q]rD}Ckv-
insertSort(data); b 1&i# I?{
} K^_i%~
/** A2}Rl%+X]6
* @param data 3nY1[,
*/ }HE6aF62O
private void insertSort(int[] data) { sC[yI Up
int temp; JFgoN,xn
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bl9jkq
]
} qO`)F8
} tpy>OT$
} 6#j$GH *
$3Z-)m
} 7PR#(ftz
B?$ "\;&
归并排序: m/N dJMoN=
3] 1-M
package org.rut.util.algorithm.support; OB~X/
ExHKw~y9
import org.rut.util.algorithm.SortUtil; \5Vde%!$Z
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/** bCZ gcN
* @author treeroot $A3<G-4O
* @since 2006-2-2 i{D=l7j|w
* @version 1.0 1FtM>&%4
*/ jGrN\D?h
public class MergeSort implements SortUtil.Sort{ X0-IRJ[
dD<fn9t
/* (non-Javadoc) TO2c"7td
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v^ d]rSm
*/ Jc)^49Rf
public void sort(int[] data) { U/lM\3v/e
int[] temp=new int[data.length]; nA?Hxos
mergeSort(data,temp,0,data.length-1); zrVC8Wb
} 6h3HDFS7s
6Es?
MW=
private void mergeSort(int[] data,int[] temp,int l,int r){ T32BnmB{
int mid=(l+r)/2; y8VpFa
if(l==r) return ; Q-#$Aa
mergeSort(data,temp,l,mid); l{w#H|]
mergeSort(data,temp,mid+1,r); smG>sEp2
for(int i=l;i<=r;i++){ _2b tfY1U
temp=data; LQnkcV
} 10#oG{9
int i1=l; VL'
fP2
int i2=mid+1; R:p62c;Tv0
for(int cur=l;cur<=r;cur++){ '03->7V
if(i1==mid+1) %p&k5:4<"#
data[cur]=temp[i2++]; 8G>>i)Sbg
else if(i2>r) vpPl$ga5bY
data[cur]=temp[i1++]; 7u\*_mrv
else if(temp[i1] data[cur]=temp[i1++]; x\2?ym@
else $8l({:*q0
data[cur]=temp[i2++]; Wlh~)
} ~.%K/=wK @
} `V[!@b:
iut`7
} 5>J=YLq
U|G|l|Bl
改进后的归并排序: c:83LZ
Y2o6kS{x
package org.rut.util.algorithm.support; /ug8]Lo0
c`x7u}C
import org.rut.util.algorithm.SortUtil; ?j^=u:<
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/** \.XLcz
* @author treeroot Q4t(@0e}
* @since 2006-2-2 8 i&_Jgmr
* @version 1.0 Y-ux7F{=z
*/ +.RKi!
public class ImprovedMergeSort implements SortUtil.Sort { ]4+s$rG
tweY'x.{
private static final int THRESHOLD = 10; .kTG[)F0b
1>Q{Gs^
/* b]E|*
* (non-Javadoc) ?)'~~@NkH
* 39{{7(hh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B7\k< Nit0
*/ OdMO=Hy6d
public void sort(int[] data) { ?Z\Yu'
int[] temp=new int[data.length]; (><zsLs&
mergeSort(data,temp,0,data.length-1); PiFD^w
} b'zR 9V
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private void mergeSort(int[] data, int[] temp, int l, int r) { = sAn,ri
int i, j, k; p8wyEHB
int mid = (l + r) / 2; 2tayP@$
if (l == r) \b[9ebME
return; @eqeN9e
if ((mid - l) >= THRESHOLD) \U%#nU{
mergeSort(data, temp, l, mid); %iJ%{{f`
else (2?G:+C 7
insertSort(data, l, mid - l + 1); X5YiFLH>y\
if ((r - mid) > THRESHOLD) ch5s<x#CE
mergeSort(data, temp, mid + 1, r); HxK$ 4I`
else 8\<jyJ
insertSort(data, mid + 1, r - mid); p}Fs'l?7Rq
wix5B@
for (i = l; i <= mid; i++) { OT
%nr zP
temp = data; 1Xy]D
} _DRrznaw
for (j = 1; j <= r - mid; j++) { BiE08,nj
temp[r - j + 1] = data[j + mid]; AvR2_
} _<ut)G^9
int a = temp[l]; DN4#H`
int b = temp[r]; %}2@rLP
for (i = l, j = r, k = l; k <= r; k++) { 4^6.~6a
if (a < b) { 7dihVvL
$
data[k] = temp[i++]; Dc~,D1xWj
a = temp; 66snC{gU
} else { \EoX8b}$b0
data[k] = temp[j--]; [fu!AIQs
b = temp[j]; 3#wcKv%>&_
} df+t:a
} P`U<7xF~
} NV4g~ +n
PIcrA2ll
/** 9ykM3
* @param data "s
W-_j]
* @param l 3`9{T>
* @param i wHz?#MW 3L
*/ /E wGW
private void insertSort(int[] data, int start, int len) { {>0V[c[~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0f ER*.F
} F{k+7Ftc
} 4X
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} b(GFMk
} Np)3+!^1"
&R+#W
堆排序: jdevat,&u
{TXOQ>gY
package org.rut.util.algorithm.support; $#o1MX
mxrG)n6Y
import org.rut.util.algorithm.SortUtil; vUQFQ
p]W+eT
/** 3l!NG=R
* @author treeroot 4dH}g~[P9
* @since 2006-2-2 8OWmzY_=
* @version 1.0 $awi>#[
*/ 1;u4X`8
public class HeapSort implements SortUtil.Sort{ _BnTv$.P
E]^5I3=O
/* (non-Javadoc) /I&wj^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (k-YI{D3
*/ jm>3bd
public void sort(int[] data) { Hr;h4J
MaxHeap h=new MaxHeap(); &UAe!{E0
h.init(data); lp&!lb`
for(int i=0;i h.remove(); h?@G$%2
System.arraycopy(h.queue,1,data,0,data.length); )tZ`K
|
} .M|>u_<Qd
f<[jwhCWV
private static class MaxHeap{ i~=s^8n`l
l52a\/
void init(int[] data){ jStmS2n
this.queue=new int[data.length+1]; { }e^eJ
for(int i=0;i queue[++size]=data; !7H6i#g*
fixUp(size); zLjgCS<7
} g+q@i{Yn
} E|Bd>G
$]d*0^J 6
private int size=0; ^Uw[x\%#gD
p|6v~
private int[] queue; ~JZ3a0$^
l_FGZ!7
public int get() { a,'Cyv">
return queue[1]; <2Y0{
8)
} Qb^q+C)o]
wN]J8Ir
public void remove() { ;M
v~yb3v
SortUtil.swap(queue,1,size--); {'3D1#SK
fixDown(1); ,-*iCs<
} >POO-8Q
file://fixdown f~& a-
private void fixDown(int k) { u'9gVU B
int j; dK?);*w]
while ((j = k << 1) <= size) { &TN2 HZ-bJ
if (j < size %26amp;%26amp; queue[j] j++; B5=3r1Ly
if (queue[k]>queue[j]) file://不用交换 = (U/CI
break; K\=8eg93Z
SortUtil.swap(queue,j,k); J2Et-Cz 1
k = j; Y'm=etE
} =v2%Vs\7k
} vx 0UoKX
private void fixUp(int k) { go|>o5!g
while (k > 1) { cFfTYP9
int j = k >> 1; p]LnE`v
if (queue[j]>queue[k]) )y50Mb0+
break; &H;8QZ8uw
SortUtil.swap(queue,j,k); `bgb*Yaod
k = j; ;i)KHj'
} (}H ,ng'4
} @h-T:$
6TFo|z!C
} U ^#?&u
U~is-+Uq
} Y5TS>iEE]
swr"k6;G
SortUtil: 2bQ/0?.).-
s"mFt{Y
package org.rut.util.algorithm; W}gVIfe
lJ/6-dP
import org.rut.util.algorithm.support.BubbleSort; ~Yk"Hos
import org.rut.util.algorithm.support.HeapSort; +mWjBY
import org.rut.util.algorithm.support.ImprovedMergeSort; *re 44
import org.rut.util.algorithm.support.ImprovedQuickSort; 7c1+t_ Ew
import org.rut.util.algorithm.support.InsertSort; F?*k}]Gi
import org.rut.util.algorithm.support.MergeSort; G\rj?%
import org.rut.util.algorithm.support.QuickSort; rZC3\,W
import org.rut.util.algorithm.support.SelectionSort; ;w6s<a@Zh
import org.rut.util.algorithm.support.ShellSort; d.}}s$Q
jn=ug42d
/** jPwef##~7
* @author treeroot Z.jCera.
* @since 2006-2-2 3ut_Bt\
* @version 1.0 WM< \e
*/ G.jQX'%4QG
public class SortUtil { t[O+B6
public final static int INSERT = 1; rc~Y=m
public final static int BUBBLE = 2; ,?=KgG1i
public final static int SELECTION = 3; E`E'<"{Yd
public final static int SHELL = 4; : ^(nj7D
public final static int QUICK = 5; *FPg#a+
public final static int IMPROVED_QUICK = 6; I)[B9rbe
public final static int MERGE = 7; !A-;NGxE
public final static int IMPROVED_MERGE = 8; QWhp:]}
public final static int HEAP = 9; oS!/|#mn
S:97B\u`
public static void sort(int[] data) { D0%FELG05
sort(data, IMPROVED_QUICK); 0VG=?dq
} )1z4q`
private static String[] name={ O)<r>vqe}
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9".Uc8^p/F
}; 8&Wx@QI
:uR>UDlPX
private static Sort[] impl=new Sort[]{ ZQLB`n@
new InsertSort(), {5x>y:v
new BubbleSort(), Y@:3 B:m#
new SelectionSort(), m.146
new ShellSort(), m^0A?jBrR
new QuickSort(), Qv !rUiXq
new ImprovedQuickSort(), pGk"3.ce
new MergeSort(), 'wE\{1~_[+
new ImprovedMergeSort(), ]L]T>~X`
new HeapSort() |>JmS
}; 24|<<Xn
;$6x=uZ
public static String toString(int algorithm){ 5`yPT>*#m>
return name[algorithm-1]; }9}w8R~E
} N[ Q#R~Hn<
.HOY q
public static void sort(int[] data, int algorithm) { BD4"pcr
impl[algorithm-1].sort(data); MgP{W=h2
} 0~i q G
TQ~&Y)".
public static interface Sort { ,lP7 ri
public void sort(int[] data); #Y: ~UVV
} Ph"iX'J
3:O+GQ*
public static void swap(int[] data, int i, int j) { W:>J864!
int temp = data; mS7E_A8
data = data[j]; wy\o*P9mG)
data[j] = temp; z@n+7p`w
} Sgx+V"bkT
} wLSjXpP8