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。 `Gzukh
插入排序: _Sy-&}c+
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package org.rut.util.algorithm.support; `4__X;
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import org.rut.util.algorithm.SortUtil; \~d|MP}"F:
/** ~4y&]:I
* @author treeroot ``j..v,
* @since 2006-2-2 D% }?l
* @version 1.0 s$css{(ek
*/ kLQPa[u4
public class InsertSort implements SortUtil.Sort{ :TJv<NZi'
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/* (non-Javadoc) rlk0t159
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ]c]rIOTN
public void sort(int[] data) { asb-syqU
int temp; *,5V;7OR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i`)bn1Xm
} 35B G&;C
} @G[P|^B
} Er^ijh,
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} zJWBovT/
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冒泡排序: ]4-lrI1#
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package org.rut.util.algorithm.support; BM!\U 6
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import org.rut.util.algorithm.SortUtil; #XR<}OYcL
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/** tp<uN~rTgh
* @author treeroot jm0J)Z_"nr
* @since 2006-2-2 *#-X0}'s
* @version 1.0 DKgwi'R
*/ 4V9DPBh
public class BubbleSort implements SortUtil.Sort{ WL$Ee=
dOh'9kk3
/* (non-Javadoc) 8rwkux >
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =G3O7\KmH
*/ S453oG"
public void sort(int[] data) { ,o7aIg&_H
int temp; tgK$}#.*
for(int i=0;i for(int j=data.length-1;j>i;j--){ uSCF;y=1g,
if(data[j] SortUtil.swap(data,j,j-1); #D M%_HXDi
} {Ak{
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} t=syo->
} n0g,r/
} H_KE^1
rq?:I:0
} Qg;A (\z
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选择排序: Dw{rjK\TT'
xO)vn\uJ
package org.rut.util.algorithm.support; }ozlED`E
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import org.rut.util.algorithm.SortUtil;
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/** s8Kf$E^?e.
* @author treeroot lG12Su/
* @since 2006-2-2 7|LJwXQ-
* @version 1.0 _yY(&(]#
*/ XlIRedZ{
public class SelectionSort implements SortUtil.Sort { .r[b!o^VR
P.Pw.[:3
/* =KqcWN3k
* (non-Javadoc) `RDlk
* fmZ5rmw!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \U;4\
*/ 7sKN`
public void sort(int[] data) { $s<,xY 9
int temp; #A<|hh
for (int i = 0; i < data.length; i++) { Sp$~)f'
int lowIndex = i; >(5*y=\i
for (int j = data.length - 1; j > i; j--) { E6a$c`H@?
if (data[j] < data[lowIndex]) { iL(rZT&^
lowIndex = j; 0Ci\(
} Z&FC:4!!
} g*C&Pr3
SortUtil.swap(data,i,lowIndex); b:3n)-V{ u
} 08AC9
} AujvKQ(
HL$}Gh]q
} dd1m~Gm
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Shell排序: U;Z6o1G
dK'?<w$
package org.rut.util.algorithm.support; V&`\ s5Q
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import org.rut.util.algorithm.SortUtil; x)0g31 49
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/** q<`YJ,
* @author treeroot TxAT ))
* @since 2006-2-2 'U
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* @version 1.0 U ^1Xc#Ff
*/ Uf)?sz
public class ShellSort implements SortUtil.Sort{ dA>=#/"
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/* (non-Javadoc) OJ8 ac6cJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h<H.8.o
*/ [.4R ,[U
public void sort(int[] data) { PmOm>
for(int i=data.length/2;i>2;i/=2){ la#f,C3_
for(int j=0;j insertSort(data,j,i); }M?\BH&
} Gxu
} 2|]$hjs
insertSort(data,0,1); Qr]xj7\@i
} Q4e*Z9YJ
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/** Z7RGOZQ}G
* @param data K=Z~$)Og)
* @param j ULc oti=,
* @param i ^$qr6+
*/ edld(/wu~
private void insertSort(int[] data, int start, int inc) { x*td
nor&
int temp; NIufL
}6\
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W^; wr#
} vmdu9"H
} "?EoYF_
} i? 5jl&30
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} ZN>oz@jY
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快速排序: Z$!>hiz2
5W"&$6vj
package org.rut.util.algorithm.support; BwtjTwd
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import org.rut.util.algorithm.SortUtil; &!>
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/** 3wZA,Z
* @author treeroot HqNM3 1)
* @since 2006-2-2 N,U<.{T=A
* @version 1.0 3YT>3f!\
*/
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public class QuickSort implements SortUtil.Sort{ [=*c8
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/* (non-Javadoc) l
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gwE#,OY*
*/ WE\@ArY>
public void sort(int[] data) { ?U'c;*O-
quickSort(data,0,data.length-1); pN# \
} =4`#OQ&g
private void quickSort(int[] data,int i,int j){ S*;8z}5<\
int pivotIndex=(i+j)/2; I^|6gaP|6
file://swap
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SortUtil.swap(data,pivotIndex,j); gN#&Ag<?
w$I<WS{J:Z
int k=partition(data,i-1,j,data[j]); l`c&nf6
SortUtil.swap(data,k,j); ,b;eU[!]
if((k-i)>1) quickSort(data,i,k-1); BeP]M1\?>
if((j-k)>1) quickSort(data,k+1,j); q#9JJWSs
>7%Gd-;l
} :m*r(i3
/** k(l
* @param data &?L
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* @param i d*3;6ZLy
* @param j tlhYk=yq
* @return I3Gz,y+
*/ mlC_E)Ed5
private int partition(int[] data, int l, int r,int pivot) { IG@.W sM_
do{ eytd@-7uX
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b37F;"G
SortUtil.swap(data,l,r); H9'Y` -r
} qOaI4JP@
while(l SortUtil.swap(data,l,r); Zz!0|-\
return l; o.Ld.I)
} 9pAklD 4
r #H(kJu,
} 5J!ncLNm{
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改进后的快速排序: |"V]$s$ c
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package org.rut.util.algorithm.support; .)Xyzd
Vk%[N>
import org.rut.util.algorithm.SortUtil; I|jGu9G
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/** b0W~*s [4
* @author treeroot )Los\6PRn
* @since 2006-2-2 r|!w,>.
* @version 1.0 CZ2&9Vb9I
*/ S!!i
public class ImprovedQuickSort implements SortUtil.Sort { EHpIbj;n
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private static int MAX_STACK_SIZE=4096; p H&Tb4
private static int THRESHOLD=10; &t.9^;(
/* (non-Javadoc) Q1tZ]Q.6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?VC[%sjwn
*/ 5 :O7c Br
public void sort(int[] data) { m$nT#@l5bH
int[] stack=new int[MAX_STACK_SIZE]; ,G2]3
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int top=-1; vLQ!kB^\W
int pivot; bvyX(^I[q
int pivotIndex,l,r; yZ7aH|Q81B
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stack[++top]=0; [k~V77w
14
stack[++top]=data.length-1; 4`Com~`6"
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while(top>0){ *n9t~t6GHg
int j=stack[top--]; !uaV6K
int i=stack[top--]; 6ww4ZH?j
aLr\Uq,83
pivotIndex=(i+j)/2; m1,?rqeb
pivot=data[pivotIndex]; 9qyA{
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yEYlQ= [#
SortUtil.swap(data,pivotIndex,j); OVr,
{[r
TR2X' `:O
file://partition CX](^yU_
l=i-1; t~mbe
r=j; L,!3
do{ Q-<,+[/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cYBv}ylw}R
SortUtil.swap(data,l,r); SQ*dC
} osKM3}Sb
while(l SortUtil.swap(data,l,r); O{b.-<
SortUtil.swap(data,l,j); q ld2<W
vZEeb j
if((l-i)>THRESHOLD){ o`B,Pt5vu
stack[++top]=i; ;dXQB>Za
stack[++top]=l-1; r{DR$jD
} S $wx>715
if((j-l)>THRESHOLD){ N>,`l
stack[++top]=l+1; l=(4o4um
stack[++top]=j; y+3<
]
N
} B8Ob~?
(Uo:WyVj|F
} fiDwa
;,
file://new InsertSort().sort(data); g3B
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insertSort(data); #vk-zx*v7=
} .xXe *dm%
/** F$TNYZ
* @param data ?m&?BsW$)
*/ wNsAVUjLe
private void insertSort(int[] data) { L2"fO
int temp; 1.7tXjRd+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :',.I
} \@yx;}bdI
} *=]hc@
} 1~!
4
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} |\g =ua+h
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归并排序: z+ybtS>pZ
JZ#O"rF
package org.rut.util.algorithm.support; o*5<Cxg
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import org.rut.util.algorithm.SortUtil; KA )9&6
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/** }6#lE,\lM
* @author treeroot Z i-)PK^
* @since 2006-2-2 j$l[OZ:#
* @version 1.0 /S29\^
*/ Uj!3H]d
public class MergeSort implements SortUtil.Sort{ fhx_v^<X
#:rywz+
/* (non-Javadoc) IooAXwOF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3*@ sp
*/ r^3QDoy
public void sort(int[] data) { Xg>nb1e
int[] temp=new int[data.length]; R"Q=U}?$
mergeSort(data,temp,0,data.length-1); p|mt2oDjw
} <0my,hAK
,xA`Fu9^
private void mergeSort(int[] data,int[] temp,int l,int r){ 3QL I|VpO
int mid=(l+r)/2; 9NCo0!Fb
if(l==r) return ; 2z/qbzG7
mergeSort(data,temp,l,mid); plL##?<D<
mergeSort(data,temp,mid+1,r); RS&l68[6
for(int i=l;i<=r;i++){ g'G"`)~ 2
temp=data; x1['+!01
} HX1RA5O
int i1=l; w6C0]vh
int i2=mid+1; :S
Tj
<
for(int cur=l;cur<=r;cur++){ B+:'Ld](
if(i1==mid+1) 1EvAV,v"
data[cur]=temp[i2++]; V=!tZ[4z$h
else if(i2>r) 6?-vj2,
data[cur]=temp[i1++]; Kyy CS>
else if(temp[i1] data[cur]=temp[i1++]; "S6'<~s
else g~FA:R
data[cur]=temp[i2++]; ya7/&Z
)0
} CRy;>UI
} r+8%oWj
r5ONAa3.
} wOH$S=Ba5,
/A3tY"Vn
改进后的归并排序: X}?`G?'
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package org.rut.util.algorithm.support; j6wdqa9!~
Hm=!;xAFX
import org.rut.util.algorithm.SortUtil; VEAf,{)Q
eNN)2-96
/** s;-(dQ{O
* @author treeroot `TNWLD@Z
* @since 2006-2-2 Gv,_;?7lD
* @version 1.0 8=;'kEU
*/ %{$iN|%J%$
public class ImprovedMergeSort implements SortUtil.Sort { P$E #C:=
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private static final int THRESHOLD = 10; ha6jbni
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/* KCR6@{@
* (non-Javadoc) \$o5$/oU(
* 8r@_b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <uUHr,#
*/ wfH#E2+pk
public void sort(int[] data) {
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int[] temp=new int[data.length]; `]L&2RS
mergeSort(data,temp,0,data.length-1); 69)- )en
} 8c-r;DE
5c?1JH62o8
private void mergeSort(int[] data, int[] temp, int l, int r) { O)g\/uRy
int i, j, k; >3R)&N
int mid = (l + r) / 2; , VT&
if (l == r) ml=tS,
return; -nP
y?>p"|
if ((mid - l) >= THRESHOLD) AS[yNCsjC
mergeSort(data, temp, l, mid); ^O_E
T$
else XV"8R"u%Q
insertSort(data, l, mid - l + 1); feOX]g#
if ((r - mid) > THRESHOLD) qx3@]9
mergeSort(data, temp, mid + 1, r); $[5S M>e]
else &)?ECj0`
insertSort(data, mid + 1, r - mid); -ea":}/
EHByo[
for (i = l; i <= mid; i++) { <-xI!o"}
temp = data; \{W}
} \A@Mlpe&t
for (j = 1; j <= r - mid; j++) { ,Y|WSKY*
temp[r - j + 1] = data[j + mid]; d{?X:*F
} LF\4>(C2g
int a = temp[l]; .t\#>Fe
int b = temp[r]; }Gmwm|`*
for (i = l, j = r, k = l; k <= r; k++) { |E/r64T
if (a < b) { `w@8i[2J
data[k] = temp[i++]; &)4#0L4
a = temp; E! '|FJ
} else { p^u;]~JO
data[k] = temp[j--]; &rY73qfP'
b = temp[j]; 'CiV=&3/
} .W[ 9G\
} hV,)u3
} ~(W q 5<v
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/** 7`113`1
* @param data R-Y07A
* @param l oWg"f*
* @param i {C6,h#|pg
*/ E1 )7gio
private void insertSort(int[] data, int start, int len) { ygiZ~v4P/
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O,m0Xb2s]~
} i,5mH$a&u:
} hS<lUG!9UJ
}
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} C"`,?K(U
9?8Yf(MC%u
堆排序: no6q3<re
*&7F(
package org.rut.util.algorithm.support; H_H3Gp
O}Y& @V%4k
import org.rut.util.algorithm.SortUtil; `_`\jd@
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/** m0*bz5
* @author treeroot XxXMtiZ6
* @since 2006-2-2 1ztL._Td
* @version 1.0 ?];?3X~|
*/ /G}TPXA
public class HeapSort implements SortUtil.Sort{ /l o;:)AiP
?)x"+[2
/* (non-Javadoc) )YSS>V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;[pY>VJ(
*/ b#XY.+ *0
public void sort(int[] data) { WX@a2c.'
MaxHeap h=new MaxHeap(); N@Fof(T&
h.init(data); NJ6*
7Cd
for(int i=0;i h.remove(); 6x?3%0Km
System.arraycopy(h.queue,1,data,0,data.length); *^|.bBG
} AmSrc.
^*!Tq&Dst|
private static class MaxHeap{ 0O,Q]P 82f
IIrp-E MXJ
void init(int[] data){ $CT2E
this.queue=new int[data.length+1]; [nL{n bli
for(int i=0;i queue[++size]=data; u">KE6um
fixUp(size); fa~4+jx>S
} >x/;'Y.
} s/' ]* n
v[P
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private int size=0; Pra,r9h,
{,kA'Px)
private int[] queue; ZboY]1L[j
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public int get() { ?4G/f<ou
return queue[1]; NT3Ti
?J,
} ?g7O([*[
tQTVP 2:Y
public void remove() { Gp&o
SortUtil.swap(queue,1,size--); tCoT-\Q
fixDown(1); st91rV$y?
} 25bLU?x5B
file://fixdown ZA1u
private void fixDown(int k) { D\"F ?>
int j; #`kLU:
while ((j = k << 1) <= size) { K<#Q;(SF U
if (j < size %26amp;%26amp; queue[j] j++; ~Vh< mt
if (queue[k]>queue[j]) file://不用交换 1m c'=S{
break; c-?2>%;(V
SortUtil.swap(queue,j,k); luPj'd?
k = j; D'
d^rT| H
} 1/hk3m(C
} tN-U,6c]
private void fixUp(int k) { *3A`7usU
while (k > 1) { BH@b]bEJ
int j = k >> 1; Hu4\4x$?
if (queue[j]>queue[k]) M.*3qWM
break; 'h]sq{
SortUtil.swap(queue,j,k); at(oepq
k = j; ;s$bVGHr
} GxFmw:
} BAy]&q|.
wO>P<KBU
} d z-
RxeyMNd
} #KFpT__F
5:"zs
SortUtil: mmf}6ABYT
XkGS3EY
package org.rut.util.algorithm; .YYLMI
J.t tJOP
import org.rut.util.algorithm.support.BubbleSort; pb`!_GmB
import org.rut.util.algorithm.support.HeapSort; E:!qncL:
import org.rut.util.algorithm.support.ImprovedMergeSort; xD|/98
import org.rut.util.algorithm.support.ImprovedQuickSort; aC2cyUuaN
import org.rut.util.algorithm.support.InsertSort; ZJZKCdT@
import org.rut.util.algorithm.support.MergeSort; 06r-@iY.]
import org.rut.util.algorithm.support.QuickSort; @_:Jm
tH<
import org.rut.util.algorithm.support.SelectionSort; |_ChK6Q?v
import org.rut.util.algorithm.support.ShellSort; =~|:93]k
Zo12F**{
/** 2PaRbh{"
* @author treeroot *F_ dP
* @since 2006-2-2 nKR=/5a4Y
* @version 1.0
krt8yAkG
*/ y?r:`n
public class SortUtil { {(00,6M)i
public final static int INSERT = 1; h3udS{9'8
public final static int BUBBLE = 2; \os iY^
public final static int SELECTION = 3; 5:T)hoF@
public final static int SHELL = 4; MhaoD5*9
public final static int QUICK = 5; ~WKcO&
public final static int IMPROVED_QUICK = 6; 94Hs.S)
public final static int MERGE = 7; "{1SDbwmMo
public final static int IMPROVED_MERGE = 8; Ho_ 2zx:8b
public final static int HEAP = 9; mh5ozv$
+6i~Rx>
public static void sort(int[] data) { ue/GB+U
sort(data, IMPROVED_QUICK); $$GmundqB
} ` 6'dhB
private static String[] name={ 0P%,1M3d
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _7k6hVQ
}; 0Na/3cz|zg
3lW7auH4Y{
private static Sort[] impl=new Sort[]{ u djahI<{
new InsertSort(), })Pq!u:3
new BubbleSort(), -\2T(3P
new SelectionSort(), reU*apZ/
new ShellSort(), #JLxM/5^1~
new QuickSort(), GELxS!
new ImprovedQuickSort(), F:vHbs `y
new MergeSort(), {&qB!axj
new ImprovedMergeSort(), VQMPs{tm
new HeapSort() dM^1O-K:
}; v[}g+3a
\/
9s<
public static String toString(int algorithm){ s?}m~Pl
return name[algorithm-1]; |IgH0
zZ
} l+V#`S*q
h^`!kp
public static void sort(int[] data, int algorithm) { R,
J(]ew
impl[algorithm-1].sort(data); doj$chy
} (:TZ~"VY
?F!='6D}b
public static interface Sort { n>5/y
c"/q
public void sort(int[] data); i#RT4}l"a
} <z2*T \B!8
f(}AdW}?
public static void swap(int[] data, int i, int j) { MU-T>S4
int temp = data; HAHLF+k
data = data[j]; j)vfI>
data[j] = temp; 1~|o@CO
} 8}A+{xVp8
} J8>8@m6