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。 \VAS<?3
插入排序: KW36nY\7
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package org.rut.util.algorithm.support; ge&!GO
v?q)E%5j
import org.rut.util.algorithm.SortUtil; _6sSS\
/** V$MMK
* @author treeroot Ez^wK~
* @since 2006-2-2 R{Me~L?
* @version 1.0 ML1/1GK*i+
*/ R8,
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public class InsertSort implements SortUtil.Sort{ m8 *)@e
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/* (non-Javadoc) Pfg.'Bl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n8) eC2A
*/ @PKY>58)
public void sort(int[] data) { Y)C!N$=@Q
int temp; ZlL]AD@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F^wm&:%{`
} D'_w
*
} R6irL!akAd
} HAcC& s8
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} jQ P2[\
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冒泡排序: 8/CK(G
@B>pPCowa
package org.rut.util.algorithm.support; MB?762Q
lM%3 ?~?Q&
import org.rut.util.algorithm.SortUtil; FlLk.+!t
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/** ";w"dfC^
* @author treeroot z
dUSmb
* @since 2006-2-2 ff2`4_,|
* @version 1.0 R\lUE,o]<q
*/ =zwn3L8 fL
public class BubbleSort implements SortUtil.Sort{ yRldPk_
_VLA2#V>
/* (non-Javadoc) eh6=-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^" UZ.@sq'
*/ `R_;n#3F0
public void sort(int[] data) { 2?(dS
int temp; z~RE}k
for(int i=0;i for(int j=data.length-1;j>i;j--){ Nb/Z +
if(data[j] SortUtil.swap(data,j,j-1); ~d=Y98'xS
} a`; nB E
} 2fMKS
} S,qEKWyLd
} "l-R|>6~
OP\m~1
} $xq$
9at_F'>R
选择排序: +(8Z8]Jf
m}sh(W5\
package org.rut.util.algorithm.support; V\r2=ok@y
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import org.rut.util.algorithm.SortUtil; @`:z$52
7SJtW`~
/** #HmZe98[%
* @author treeroot h9l 6AnbJ
* @since 2006-2-2 6{?B`gm7g
* @version 1.0 C.?~D*Q
*/ o Yrg;]H
public class SelectionSort implements SortUtil.Sort { ze#r/j;sw
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/* (Ujry =f
* (non-Javadoc) 7) Qq
* ;a~
e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t'e5!Ma
*/ DDp\*6y3l
public void sort(int[] data) { G57c 8}\4
int temp; G9r~O#=gy
for (int i = 0; i < data.length; i++) { RfzYoBN
int lowIndex = i; +Z=DvKsTJ
for (int j = data.length - 1; j > i; j--) { 'Em633
if (data[j] < data[lowIndex]) { =r>u'wRQ
lowIndex = j; s73' h
} em?Q4t
} jF0>wm
SortUtil.swap(data,i,lowIndex); c4(og|ifk
} trMwFpfu
} `-w;/A"MJ
CsiRM8
} tk!5"`9N
NWII?X#T}
Shell排序: F4=V*/7
o'|B|oZ
package org.rut.util.algorithm.support; a<lDT_2b
7&vDx=W
import org.rut.util.algorithm.SortUtil; "g&hsp+i"A
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/** Oc%W_Gb7
* @author treeroot g0:{{w
* @since 2006-2-2 zx;~sUR;
* @version 1.0 Ex@o&j\93
*/ Mk!bmFZOZ
public class ShellSort implements SortUtil.Sort{ #]@|mf
q
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/* (non-Javadoc) b
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IRT0
*/ n|eM}ymF+
public void sort(int[] data) { b>L?0p$ej
for(int i=data.length/2;i>2;i/=2){ r&Qq,koE
for(int j=0;j insertSort(data,j,i); V3q[$~9
} tYMPqP,1.
} Tx|y!uHh
insertSort(data,0,1); }mOo= )C!
} gvoYyO#cm
WGHf?G/s
/** 40HhMTZ0-
* @param data #;/ob-
* @param j ,#K{+1z:
* @param i d VyT `
*/ #N;McF;W
private void insertSort(int[] data, int start, int inc) { R 0YWe
int temp; K#xL-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /-Z}=
} e$o]f"(
} J7+[+Y
} - |4 Oq
s%^@@Dk
} e@7UL|12
du_~P"[
快速排序: '+7"dHLC;
Ih)4.lLcKn
package org.rut.util.algorithm.support; z8cefD9F
2 :wgt
import org.rut.util.algorithm.SortUtil; 4OFv#$[
%{ory5
/** #|=Q5"wU
* @author treeroot -lm)xpp1
* @since 2006-2-2 hRZYvZ3
* @version 1.0 8~y&" \
*/ 1H \
public class QuickSort implements SortUtil.Sort{ Tb\<e3Te_
3?
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/* (non-Javadoc) YFP<^y=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }!V-FAL
*/ UHR%0ae
public void sort(int[] data) { kO4'|<
quickSort(data,0,data.length-1); Y-lTPR<Eq
} G%viWWTY
private void quickSort(int[] data,int i,int j){ CZog?O}<
int pivotIndex=(i+j)/2; b*1yvkX5
file://swap t8M\
SortUtil.swap(data,pivotIndex,j); m~-O}i~)
GI6]Ecc
int k=partition(data,i-1,j,data[j]); B[9y<FB+
SortUtil.swap(data,k,j); LZ RP}|
if((k-i)>1) quickSort(data,i,k-1); K%1`LT5:~
if((j-k)>1) quickSort(data,k+1,j); L}rYh`bUP[
0X5b32
} JT6}m
/** h 27f0x9
* @param data 6B+?X5-6DH
* @param i nWA>u J5
* @param j d .%2QkL
* @return /QT>"
*/ _ Y7Um
private int partition(int[] data, int l, int r,int pivot) { g)7@EU2
do{ g{CU1c)B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k/1S7X[
SortUtil.swap(data,l,r); wV-9T*QrM
} <!F".9c@A
while(l SortUtil.swap(data,l,r); 8*Ty`G&v
return l; oxL)Jx\c9A
} [}yPy))A
j8c5_&
} }{)Rnb@
>
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改进后的快速排序: hbEqb{#}@
#4<=Ira5
package org.rut.util.algorithm.support; g'cVsO)S
aW9\h_$
import org.rut.util.algorithm.SortUtil; _r>kR7A\{
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/** |K9*><P?)2
* @author treeroot 9sI&d
* @since 2006-2-2 *7b?.{
* @version 1.0 Vh>|F}%E
*/ A]ZQ?-L/
public class ImprovedQuickSort implements SortUtil.Sort { LW k/h1
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private static int MAX_STACK_SIZE=4096; r+k&W
private static int THRESHOLD=10; E1SWZ&';
/* (non-Javadoc) bo1J'pU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Swh\^/B8
*/ E\TWPV'/
public void sort(int[] data) { m^
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int[] stack=new int[MAX_STACK_SIZE]; %7 QSBL
31UxYBY
int top=-1; uIBN
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int pivot; ;hF}"shJN
int pivotIndex,l,r; z[6avW"q
a~?B/
g&_
stack[++top]=0; _]-8gr-T
stack[++top]=data.length-1; z?pi/`y8>
uQ|LkL%<^
while(top>0){ 41P0)o
int j=stack[top--]; TU':Rt
int i=stack[top--]; {{?MO{Mh*
|=07n K2
pivotIndex=(i+j)/2; bR,Es~n
pivot=data[pivotIndex]; "U+c`V=w
(<rE1w2s:
SortUtil.swap(data,pivotIndex,j); <v/aquLN
:,fT^izew
file://partition Zu2`IzrG#
l=i-1; JY@bD:
r=j; vG7Mk8mIr
do{ \Zh&[D!2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \GQRpJ#h1
SortUtil.swap(data,l,r); R !yh0y}Z
} @,7r<6E
while(l SortUtil.swap(data,l,r); P_'{|M<?
SortUtil.swap(data,l,j); -v-kFzu
bDudETl
if((l-i)>THRESHOLD){ v(GnG
stack[++top]=i; QO0@Ax\b
stack[++top]=l-1; ||fw!8E
} yYSmmgrX0
if((j-l)>THRESHOLD){ ^M%P43
stack[++top]=l+1; ?PqkC&o[q
stack[++top]=j; )B+R|PZ,
} ("F$r$9S
@3$ I
} JZ+6)R
file://new InsertSort().sort(data); T+aNX/c|>
insertSort(data); $gN\%X/n"1
} 4_ypFuS ^
/** [VqiF~o,
* @param data yf!7
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*/ @$!6u0x
private void insertSort(int[] data) { P3-O)m]jv
int temp; o.w/?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SP/b4
} ?i V}U
} dQ~GE}[
} 'wtb"0 }
K F_Uu
} x;`Gn_
)+|wrK:*v
归并排序: =+ b>d\7xG
S>r}3,]S
package org.rut.util.algorithm.support; (X-(
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]f?r@U'AS|
import org.rut.util.algorithm.SortUtil; ;Z`a[\i':
jMCd`Q]K
/** q,<l3r In
* @author treeroot lZ)6d-vK
* @since 2006-2-2 xf/K+
* @version 1.0 .AOc$Nt
*/ s,f2[6\ Y
public class MergeSort implements SortUtil.Sort{ ms;zC/
#d3_7rI0V
/* (non-Javadoc) @*~yVV!5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -s!J3DB
*/ D\+x/r?-I
public void sort(int[] data) { 4H;7GNu
int[] temp=new int[data.length]; .>}I/+n
mergeSort(data,temp,0,data.length-1); D
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} $]xH"Z%"
DTuco9yr[
private void mergeSort(int[] data,int[] temp,int l,int r){ EC0B6!C&7
int mid=(l+r)/2; ;dMr2y`6
if(l==r) return ; jA;b2A]G
mergeSort(data,temp,l,mid); W1<*9O
mergeSort(data,temp,mid+1,r); ^|6#Vx
for(int i=l;i<=r;i++){ aMGh$\Pg
temp=data; fa,:d8
} 5+!yXkE^e
int i1=l; h.]^ o*DJ
int i2=mid+1; SmD#hE[
for(int cur=l;cur<=r;cur++){ \)wVO*9*0
if(i1==mid+1) v;5-1
data[cur]=temp[i2++]; Q]GS#n
else if(i2>r) ks("(
nU
data[cur]=temp[i1++]; @BjB
Mi,
else if(temp[i1] data[cur]=temp[i1++]; 9eq)WI/
else W( sit;O
data[cur]=temp[i2++]; -T1R}ew*t
} l3BN,HNv+
} l3u+fE,;_
568M4xzi
} xzA!,75@U
#o[n.
改进后的归并排序: h$$JXf
R[6R)#o
package org.rut.util.algorithm.support; r}e(MT:R'
'YGP42#
import org.rut.util.algorithm.SortUtil; K3h];F!^
lH`c&LL-=!
/** "Dk@-Ac
* @author treeroot *0@Z+'M?
* @since 2006-2-2 jg'"?KSU~
* @version 1.0 f. >[ J
*/ T"3LO[j+
public class ImprovedMergeSort implements SortUtil.Sort { Yc-5Mr8*,
E&z^E2
private static final int THRESHOLD = 10; YfZ5Q}*1O+
ib
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/* e 2NF.
* (non-Javadoc) /6[vF)&
* ]AM*9!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ws,?ImA
*/ tj00xYY
public void sort(int[] data) { H|aC(c
int[] temp=new int[data.length]; ;Ccp1a~+
mergeSort(data,temp,0,data.length-1); G7,v:dlK
} 7b-[# g
@oj_E0i3
private void mergeSort(int[] data, int[] temp, int l, int r) { F?MVQ!K*
int i, j, k; *P7n YjG
int mid = (l + r) / 2; <3tf(?*,k]
if (l == r) P8=J0&5
return; y]obO|AH
if ((mid - l) >= THRESHOLD) ?P9VdS1-
mergeSort(data, temp, l, mid); `FNU-
I4s
else )v+&l9D
insertSort(data, l, mid - l + 1); oNl-!W
if ((r - mid) > THRESHOLD) N;P/$
mergeSort(data, temp, mid + 1, r); y
c<%f
else k5bv57@
insertSort(data, mid + 1, r - mid); h82y9($cZ
&WAU[{4W
for (i = l; i <= mid; i++) { +/n]9l]#h
temp = data; $^ir3f+
} !=;Evf
for (j = 1; j <= r - mid; j++) { ?wmu0rR
temp[r - j + 1] = data[j + mid]; qkc,93B3
} I
Gb'ii=A
int a = temp[l]; %jq
R^F:J
int b = temp[r]; [a$1{[|)
for (i = l, j = r, k = l; k <= r; k++) { xOg|<Nnl
if (a < b) { @W(,|xES
data[k] = temp[i++]; jL5O{R[
x:
a = temp; ^tm2Duv
} else { ;UX9Em
data[k] = temp[j--]; /i Xl]<
b = temp[j]; F$JA
IL{W
} %Gu=Dkz
} RiZ}cd
} Qd% (]L[N.
cw~GH
/** RN1KM
* @param data hhylsm
* @param l Ebi~gGo
* @param i 9S'\&mRl
*/ AlrUfSBB
private void insertSort(int[] data, int start, int len) { T}XJFV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6OPNP0@r
} yfFe%8w_vw
} .1J`>T?=Q
} +U<Ae^V
} S*3$1BTl
>B;S;_5=
堆排序: q4"^G:
aG@GJ@w
package org.rut.util.algorithm.support; >/@Q7V99{
^H<VH
import org.rut.util.algorithm.SortUtil; A"+t[0$.
436SIh
/** #vBSg
* @author treeroot R5uz<
* @since 2006-2-2 >i61+uzEd+
* @version 1.0 55>+%@$,a
*/ ;yZY2)L
public class HeapSort implements SortUtil.Sort{ Pff-eT+~m
.&^M
Z8
/* (non-Javadoc) FuBUg _h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +`m0i1uI3
*/ u |$GOSD
public void sort(int[] data) { !a'{gw
MaxHeap h=new MaxHeap(); \4*i;a.kU
h.init(data); K~5(j{Kb8
for(int i=0;i h.remove(); ,0>_(5
System.arraycopy(h.queue,1,data,0,data.length); X)[QEq^
} ;%u)~3B$JK
dwzk+@]8
private static class MaxHeap{ V+*1?5w
kwt;pxp i
void init(int[] data){ &j{IG`Trl
this.queue=new int[data.length+1]; F20%r 0
for(int i=0;i queue[++size]=data; f%YD+Dt_V
fixUp(size); <lPHeO<^]
} Z>@\!$Mc
} 6XVJ/qZ
u`*$EP-%
private int size=0; c/3]M>+M
@(tuE
private int[] queue; <("P5@cExU
9 &Od7Cn
public int get() { _8z
return queue[1]; ,(#n8|q4
} )7rMevF(xJ
*K=me/
3
public void remove() { R*O6Z"h
SortUtil.swap(queue,1,size--); T5 BoOVgO
fixDown(1); VK4"
} W?12'EG}xa
file://fixdown ,76nDXy`
private void fixDown(int k) { 90$`AMR
int j; MP 8s}
while ((j = k << 1) <= size) { D2#.qoP #
if (j < size %26amp;%26amp; queue[j] j++; )#cGePA
if (queue[k]>queue[j]) file://不用交换 :OY7y`hRG
break; n8e}8.Bu
SortUtil.swap(queue,j,k); YH!` uU(Lh
k = j; FkoN+\d
} 04z2gAo
} 9n".Q-V;k
private void fixUp(int k) { 2)
A$bx
while (k > 1) { =G<S!qW
int j = k >> 1; :w c.V
if (queue[j]>queue[k]) \3z ^/F~
break; \RTX fe-`
SortUtil.swap(queue,j,k); AyZBH&}RZ
k = j; 7Rom#Kl:
} ( KG>lTdN
} *W<g%j-a
3gmu-tv
} o"A%dC_
QGd"Z lQ
}
KY;E. D`
j6)@kW9x
SortUtil: X?.LA7 )CK
!7[Rhk7bW
package org.rut.util.algorithm; [ 5kaF"
rB%acTCz=[
import org.rut.util.algorithm.support.BubbleSort; .:s**UiDR
import org.rut.util.algorithm.support.HeapSort; s"]LQM1|
import org.rut.util.algorithm.support.ImprovedMergeSort; $X;fz)u
import org.rut.util.algorithm.support.ImprovedQuickSort; c=HL
6v<
import org.rut.util.algorithm.support.InsertSort; $PNIuC?=
import org.rut.util.algorithm.support.MergeSort; Z$5@r2d)
import org.rut.util.algorithm.support.QuickSort; <)(STo
import org.rut.util.algorithm.support.SelectionSort; /ZKO\q
import org.rut.util.algorithm.support.ShellSort; tpi63<N
j^Z3
/** s?*MZC
* @author treeroot fKAG+ t
* @since 2006-2-2 sL tsvH#
* @version 1.0 fXYg %
*/ dKyX70Zy9
public class SortUtil { -3c?Yaf"
public final static int INSERT = 1; m:~s6c6H
public final static int BUBBLE = 2; =jmn
public final static int SELECTION = 3; `W[oLQ
public final static int SHELL = 4; ]7^YPFc+
public final static int QUICK = 5; ef!V EtEOv
public final static int IMPROVED_QUICK = 6; -K)P|'-?m
public final static int MERGE = 7; c;bp[Y3R
public final static int IMPROVED_MERGE = 8; ~z!U/QR2
public final static int HEAP = 9; NLC}XL
E$rn^keM
public static void sort(int[] data) { >g6:{-b^a
sort(data, IMPROVED_QUICK); iffRGnN^e
} /5_!Y>W
private static String[] name={ RxkcQL/Le
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c>r0N[
}; vV|u+v{
Y0U<l1(|
private static Sort[] impl=new Sort[]{ ^YKEc0"w(
new InsertSort(), }45&s9m=
new BubbleSort(), ([ xYOxcp5
new SelectionSort(), W%.Kr-[?`o
new ShellSort(), #x&1kHu<
new QuickSort(), F
3}cVO2bY
new ImprovedQuickSort(), P{)eZINlE
new MergeSort(), !T|X/BR
new ImprovedMergeSort(), %c(':vI#
new HeapSort() $3%EKi
}; I/MYS5}
Zl.}J,0F
public static String toString(int algorithm){ / '}O-h
return name[algorithm-1]; )fR'1_
} o% !a
c0jC84*v
public static void sort(int[] data, int algorithm) { =8fp4#]7
impl[algorithm-1].sort(data); dM 7-,9Vc
} Vo"\nj
\ey3i((L
public static interface Sort { bY;ah;<
public void sort(int[] data); oO>mGl36H
} `hL16S
5>JrTO5
public static void swap(int[] data, int i, int j) { aBT|Q@Y.
int temp = data; \=4[v-3H
data = data[j]; p}}o#a~V),
data[j] = temp; icHc!m?
} 4RNB\D
} Hc4]2pf