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。 SX}GKu
插入排序: )EO/P+&
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package org.rut.util.algorithm.support; pb%#`2"
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import org.rut.util.algorithm.SortUtil; #py7emu
/** kSNVI-Wzu
* @author treeroot oW]&]*>J
* @since 2006-2-2 17D167\X
* @version 1.0 r"fu{4aX
*/ ?p5RSt
public class InsertSort implements SortUtil.Sort{ ?vRz}hiy
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/* (non-Javadoc) o\]e}+1[o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ECkfFE`
*/ @=wAk5[IN
public void sort(int[] data) { 6X|KKsPzX
int temp; _;01/V"q6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |r-<t
} ]^
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} FA{I
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} `ss]\46>
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} ;8
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冒泡排序: 7
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package org.rut.util.algorithm.support; D'nV
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import org.rut.util.algorithm.SortUtil; b!.# `.
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/** Z<,gSut'Y
* @author treeroot iBUf1v
* @since 2006-2-2 "\_}"0H
* @version 1.0 ?tA-`\E
*/ M3z7P.\G
public class BubbleSort implements SortUtil.Sort{ u|:VQzPd-
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/* (non-Javadoc) B!tte)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k6Tpaf^
*/ ,}2j
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public void sort(int[] data) { ONfJ"Rp3
int temp; $!vi:+ED
for(int i=0;i for(int j=data.length-1;j>i;j--){ l%w7N9
if(data[j] SortUtil.swap(data,j,j-1); c//W#V2Q
} &0C!P=-p
} T8m%_U#b
} AT9SD vJ
} |y=gp
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} Ol-'2l
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选择排序: T ]zjJwa
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package org.rut.util.algorithm.support; =& lYv
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import org.rut.util.algorithm.SortUtil; '{u#:TTj
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/** *oWzH_
* @author treeroot bG&qgbN>
* @since 2006-2-2 c]&VUWQ
* @version 1.0 p}!pT/KmpH
*/ 5(|ud)v
public class SelectionSort implements SortUtil.Sort { bbM
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/* |S}*M<0
* (non-Javadoc) b>(lF%M
* ;$/G T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [eN{Ft0x
*/ g !8lW
public void sort(int[] data) { c8s/`esA
int temp; _L72Ae(_
for (int i = 0; i < data.length; i++) { sP
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int lowIndex = i; $g^;*>yr
for (int j = data.length - 1; j > i; j--) { ]mh+4k?b
if (data[j] < data[lowIndex]) { ,'6GG+
lowIndex = j; 1mV0AE538
} ?yb{DZ46
} 2fk
SortUtil.swap(data,i,lowIndex); "8]170
} pp`U]Q5"gX
} )1,&YJM*6l
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} 7q=0]Hrg(D
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Shell排序: u2Obb`p S
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package org.rut.util.algorithm.support; 4\3t5n
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import org.rut.util.algorithm.SortUtil; :[39g;V}c
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/** wp*1HnWj8Y
* @author treeroot 9R[','x
* @since 2006-2-2 -*2X YTe
* @version 1.0 J;`~
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*/ NZ5~\k
public class ShellSort implements SortUtil.Sort{ Fm':sd)'X
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/* (non-Javadoc) Biy 9jIWI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z-G (!]:
*/ ^aCYh[=
public void sort(int[] data) { &L]*]Xz;
for(int i=data.length/2;i>2;i/=2){ `.g8JC\_m
for(int j=0;j insertSort(data,j,i); K;y\&'E
} ?g4|EV-56
} >JOvg*a?"
insertSort(data,0,1); uyj*v]AE'
} }0RFo96)v
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/** uek3Y[n
* @param data [#Vr)\n
* @param j |lwN!KVQ,
* @param i uLljM{I
*/ X~3P?O]kFv
private void insertSort(int[] data, int start, int inc) { ooSd6;'
int temp; Dt.Wb&V_w
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /nFw
} X)OP316yx
} Qu _T&
} hp4(f W
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} ;%alZ
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快速排序: 3+5\xRq
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package org.rut.util.algorithm.support; J*X.0&Toc
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import org.rut.util.algorithm.SortUtil; E(_I3mftm
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/** re J?38(
* @author treeroot 0 _}89:-
* @since 2006-2-2 x{V>(d'p
* @version 1.0 =Gz>ZWF
*/ ,{*fOpn
public class QuickSort implements SortUtil.Sort{ @I6 A9do
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/* (non-Javadoc) EsB'nf r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d<? :Q
*/ N-YZ0/c
public void sort(int[] data) { 2{I z
quickSort(data,0,data.length-1); ^X%4@,AE
} d}cJ5!d
private void quickSort(int[] data,int i,int j){ '|N4fbZd
int pivotIndex=(i+j)/2; IFofFXv_
file://swap G3^]Wwu
SortUtil.swap(data,pivotIndex,j); rxp9B>~
6G$tYfX
int k=partition(data,i-1,j,data[j]); xH#a|iT?(
SortUtil.swap(data,k,j); RyWOiQk;
if((k-i)>1) quickSort(data,i,k-1); Yj/nzTVJ[
if((j-k)>1) quickSort(data,k+1,j); !DL53DQ#
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} Ytwv=;h-
/** 'OW"*b
* @param data A!Ct,%
* @param i :vyf-K74M
* @param j b\m(0/x
* @return
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*/ .r%|RWs6W
private int partition(int[] data, int l, int r,int pivot) { S&]<;N_B
do{ |Umfq:W`y_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DB'KIw
SortUtil.swap(data,l,r); N/{Yi
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} dS_)ll.6z
while(l SortUtil.swap(data,l,r); {59VS
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return l; Mv`L F
} L9?/ -@M
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} E(kb!Rz
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改进后的快速排序: cBR8HkP~
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package org.rut.util.algorithm.support; )r,R!8
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import org.rut.util.algorithm.SortUtil; +Z~!n
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/** #L=
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* @author treeroot (My$@l973
* @since 2006-2-2 lF"(|n"R
* @version 1.0 f3>6:(
*/
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public class ImprovedQuickSort implements SortUtil.Sort { \ j X N*A
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private static int MAX_STACK_SIZE=4096; .C;_4jE
private static int THRESHOLD=10; (yAvDyJOn
/* (non-Javadoc) {!e ANm'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Z]y.W )
*/ {AL9o2
public void sort(int[] data) { XL/o y'_
int[] stack=new int[MAX_STACK_SIZE]; [gns8F#H\
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int top=-1; #!u51P1
int pivot; xm,`4WdG
int pivotIndex,l,r; u}LX,B-n(
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stack[++top]=0; ssyd8LC#
stack[++top]=data.length-1; i Kk"j
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while(top>0){ 1H,tP|s
int j=stack[top--]; Q$h:[_v
int i=stack[top--]; SM /ykk
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pivotIndex=(i+j)/2; @-&(TRbZo
pivot=data[pivotIndex]; o|;eMO-
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SortUtil.swap(data,pivotIndex,j); ;y~{+{{Ow
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file://partition 1^f.5@tV
l=i-1; s\C8t0C
r=j; lHKf#|
do{ ~@4ZV
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ){
SortUtil.swap(data,l,r); 24jtJC,7
} +fd@K
while(l SortUtil.swap(data,l,r); 9sU+IT K4
SortUtil.swap(data,l,j); Gkv~e?Kc~^
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if((l-i)>THRESHOLD){ 7*>S;$
stack[++top]=i; B?#k W!wj
stack[++top]=l-1; ]KXMGH_
} phgexAq
if((j-l)>THRESHOLD){ Gh2Q$w:
stack[++top]=l+1; @<OO
stack[++top]=j; EY)Gi`lK
} K/2. 1o;9
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} -!|WZ
file://new InsertSort().sort(data); cZgMA8
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insertSort(data); )W`SC mr]
} }{5mH:
/** Q'|0?nBOY
* @param data ^IVe[P'
*/ ms}f>f=
private void insertSort(int[] data) { }U%^3r-
int temp; WDEe$k4.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^Ue0mC7m
} cGE=.
} !8Z2X!$m{<
} ?h!t$QQ!M
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} <Zp^lDxa
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归并排序: 3ar=1_Ar
P3iA(3I24<
package org.rut.util.algorithm.support; |1(rr%
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import org.rut.util.algorithm.SortUtil; 'lhP!E_)q
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/** ?fK^&6pI
* @author treeroot ~->Hlxze'K
* @since 2006-2-2 tu\mFHvlg
* @version 1.0 yjEI/9_
*/ Bx(yu'g|a
public class MergeSort implements SortUtil.Sort{ oi2J:Y4
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/* (non-Javadoc) aje^Z=]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]7a;jNQu
*/ F:%^&%\
public void sort(int[] data) { k$C"xg2
int[] temp=new int[data.length]; mCM|&u
mergeSort(data,temp,0,data.length-1); wms1IV%;
} <rNtY ,
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private void mergeSort(int[] data,int[] temp,int l,int r){ _u>t3RUA
int mid=(l+r)/2; *^'wFbaBO
if(l==r) return ; OI+E
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mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); B4Q79gEh=
for(int i=l;i<=r;i++){ ],n%Xp
temp=data; MDk*j,5V
} O -G1})$
int i1=l; D9~}5
int i2=mid+1; J"-_{)0lD
for(int cur=l;cur<=r;cur++){ /I`3dWL
if(i1==mid+1) [*<.?9n)or
data[cur]=temp[i2++]; B={/nC}G~
else if(i2>r) o,CBA ;{P
data[cur]=temp[i1++]; [FGgkd}
else if(temp[i1] data[cur]=temp[i1++]; ?cJY
B)
else 'Q5&5UrBr
data[cur]=temp[i2++]; lr WLN
} J{d(1gSZ
} ~;[&K%n
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} O}QFq14<+
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改进后的归并排序: E/ijvuO
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package org.rut.util.algorithm.support; `)$`-Pw*
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import org.rut.util.algorithm.SortUtil; :j@8L.<U
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/** qIh #~
* @author treeroot $Z ]z
* @since 2006-2-2 &1_U1
* @version 1.0 [![ G7H%f
*/ X8b|]Nr
public class ImprovedMergeSort implements SortUtil.Sort { <W*xshn
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private static final int THRESHOLD = 10; 1* ^'\W.
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/* /Wu |)tx
* (non-Javadoc) \3aTaT?..
* KXf<$\+zO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^/dS>_gtHv
*/ R"3
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public void sort(int[] data) { mibpG9+d
int[] temp=new int[data.length]; b{M}5~e=B
mergeSort(data,temp,0,data.length-1); #f*g]p{
} rA1qSG~c
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private void mergeSort(int[] data, int[] temp, int l, int r) { #r<?v
int i, j, k; _6MdF<Xb/
int mid = (l + r) / 2; D. Kqc
if (l == r) DI1(`y
return; d"ZU y!a
if ((mid - l) >= THRESHOLD) *5OCqU+g
mergeSort(data, temp, l, mid); zE|Wn3_sd
else R?pR xY
insertSort(data, l, mid - l + 1); !^y y0`k6
if ((r - mid) > THRESHOLD) jQ=~g-y
mergeSort(data, temp, mid + 1, r); +7U
else nX^1$')gp
insertSort(data, mid + 1, r - mid); [h&BAR/ 2
c*;7yh&%
for (i = l; i <= mid; i++) { %}&(h/= e
temp = data; lw[e*q{s.
} R-rCh.
for (j = 1; j <= r - mid; j++) { Wto;bd
temp[r - j + 1] = data[j + mid]; C5@V/vA
} (K :]7
int a = temp[l]; = 96P7#%
int b = temp[r]; !MVj=(
for (i = l, j = r, k = l; k <= r; k++) { p!zJ;rh)
if (a < b) { c|AtBgvf
data[k] = temp[i++]; TWd;EnNM
a = temp; zl%>`k!>
} else { Tycq1i^
data[k] = temp[j--]; 1J}8sG2`
b = temp[j]; * R d#{Io7
} (GcT(~Gq)D
} wX,F`e3"/
} 2i7e#
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/** -*a?<ES`
* @param data MCc$TttaVz
* @param l @5VV|Wt=
* @param i "D][e'
*/ -#s [F S
private void insertSort(int[] data, int start, int len) { Hkd^-=]]no
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PftxqJz
} {9LWUCpsf
} Bs;|D
} PdeBDFWD
} bb-q O#E
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堆排序: v [njdP
e]Fp=*#
package org.rut.util.algorithm.support; Sr_VL:Gg
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import org.rut.util.algorithm.SortUtil; bh p5<