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。 H@!\?5I
插入排序: P)hZFX
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package org.rut.util.algorithm.support; 5C03)Go3Z
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import org.rut.util.algorithm.SortUtil; ^|h5*Tb
/** BvXA9YQ3
* @author treeroot 6EHYIN^D
* @since 2006-2-2 }sbh|#
* @version 1.0 Z/y&;N4
*/ Ek0zFnb[Gx
public class InsertSort implements SortUtil.Sort{ (k{rn3,
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/* (non-Javadoc) <=]wh|D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;S+UD~i[Bu
*/ ck=x_HB1
public void sort(int[] data) { =dVPx<l5
int temp; ^A4bsoW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B%~hVpm,eM
} zz4TJ('
} jRk"#:
} 4|?y
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} o09)esy
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冒泡排序: V^n?0^o
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package org.rut.util.algorithm.support; \Vc-W|e
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import org.rut.util.algorithm.SortUtil; .3yoDab
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/** |)"`v'8>
* @author treeroot q_5hKipd\b
* @since 2006-2-2 j_3X
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* @version 1.0 kOu C@~,
*/ >I9w|zFA
public class BubbleSort implements SortUtil.Sort{ 5_|Sm=
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/* (non-Javadoc) 676r0`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *B$$6'hi`
*/ LSX;|#AI
public void sort(int[] data) { yvQRr75
int temp; i!|OFU6
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5,i0QT"
if(data[j] SortUtil.swap(data,j,j-1); IB'gY0*
} +7`7cOqXg
} D-v}@tS'
} %%7~<=rk
} L0sb[:'luz
Wu{cE;t
} `$fKS24u
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选择排序: +!@@55I-
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package org.rut.util.algorithm.support; j9voeV|7
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import org.rut.util.algorithm.SortUtil;
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/** PQ}owEJ2eM
* @author treeroot ::&hfHR*P
* @since 2006-2-2 5[qCH(6
* @version 1.0 54^2=bp
*/ 8|U-{"!O?
public class SelectionSort implements SortUtil.Sort { t,v=~LE
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/* ,`su0P\%#.
* (non-Javadoc) 3-%F)@n
* 20NotCM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5N5Deb#V
*/ n[`KhRN
public void sort(int[] data) { 0v"h/
int temp; %]KOxaf_z
for (int i = 0; i < data.length; i++) { u A=x~-I
int lowIndex = i; 2B!Bogs
for (int j = data.length - 1; j > i; j--) { ywCF{rRd
if (data[j] < data[lowIndex]) { ]ssX,1#Xh
lowIndex = j; @D3|Ak 1
} 7)FI_uW
} "m'roU
SortUtil.swap(data,i,lowIndex); &4
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} X1N*}@:/
} (G#QRSXc\
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} wpW3%r;9
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Shell排序: o'hwyXy/S
\-F
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package org.rut.util.algorithm.support; P&2/J%@zG
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import org.rut.util.algorithm.SortUtil; ;v=v4f'+
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/** Q!&@aKl
* @author treeroot $,&3:ke1
* @since 2006-2-2 >oOZDuj
* @version 1.0 <aVfgVS
*/ P+/6-C J
public class ShellSort implements SortUtil.Sort{ )=EJFQ*v
'{I YANVT
/* (non-Javadoc) 5m(V(@a3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fcLVE
*/ #1#?k
public void sort(int[] data) { @x4IxGlUs
for(int i=data.length/2;i>2;i/=2){ 5Y}=,v*h}
for(int j=0;j insertSort(data,j,i); B]C 9f
} 5jS8{d0
} |OVD*A
insertSort(data,0,1); zo{WmV7[|
} 9yA? 82)E
8`4Z%;1
/** 8<w8"B.i
* @param data Y7L1`<SC
* @param j ex}6(;7)O
* @param i ]|#%`p56
*/ fg8"fbG`:
private void insertSort(int[] data, int start, int inc) { )K"7=TvY
int temp; uz8Y)b
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1|8<!Hx#-
} x*}*0).
} omEnIfQSO
}
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}
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快速排序: Hb:@]!r>
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package org.rut.util.algorithm.support; hiM nU
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import org.rut.util.algorithm.SortUtil; Eqc,/
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/** P!*G"^0<
* @author treeroot F\"`^`(O
* @since 2006-2-2 yo=0Ov
* @version 1.0 x+V@f~2F
*/ <`/22S"
public class QuickSort implements SortUtil.Sort{ 'A}@XGE:p
^]A,Q%1q^
/* (non-Javadoc) $^XCI%DH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S.$/uDwo
*/ P+j5_ V{\b
public void sort(int[] data) { q4wS<,3
quickSort(data,0,data.length-1); 0wlKBwf`J
} LE1#pB3TG
private void quickSort(int[] data,int i,int j){ F]4JemSjK
int pivotIndex=(i+j)/2; @UG%B7
file://swap o[ua$+67E
SortUtil.swap(data,pivotIndex,j); @|hn@!YK
f(r=S Xa*
int k=partition(data,i-1,j,data[j]); )t#v55M
SortUtil.swap(data,k,j); ;xKPa6`E
if((k-i)>1) quickSort(data,i,k-1); WU"
Lu
if((j-k)>1) quickSort(data,k+1,j); ha -KfkPFE
btZ9JZvMx
} )rce%j7
/** 8U$(9X
* @param data ]g0h7q)79
* @param i o8A1cb4<T
* @param j D+u#!t[q
* @return g
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*/ j4fv-{=$
private int partition(int[] data, int l, int r,int pivot) { c'gV
do{ Z<2j#rd
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3{j&J-
SortUtil.swap(data,l,r); ;
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} ]?$eBbt
while(l SortUtil.swap(data,l,r); ~t ` uq
return l; -T0@b8
} Pgp`g.$<
HLYTt)f}
} K~I%"r|l
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改进后的快速排序: U/|;u;H=
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package org.rut.util.algorithm.support; ^G~C#t^
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import org.rut.util.algorithm.SortUtil; X4bB
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/** M'"@l$[QM
* @author treeroot BnL [C:|
* @since 2006-2-2 S.#IC
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* @version 1.0 k-`5TmW
*/ ZI0C%c.~
public class ImprovedQuickSort implements SortUtil.Sort { _K#LOSMfj/
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private static int MAX_STACK_SIZE=4096; pg4J)<t#
private static int THRESHOLD=10; X^!1MpEQ
/* (non-Javadoc) {#]vvO2~$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I5$@1+B
*/ r{Cbx#;
public void sort(int[] data) { ;Ww s;.~
int[] stack=new int[MAX_STACK_SIZE]; F.%g_Xvk:
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int top=-1; s:fy
*6=[Z
int pivot; MBO3y&\S4
int pivotIndex,l,r; '0juZ~>}
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stack[++top]=0; u0M? l
stack[++top]=data.length-1; GF3"$?Cw
vp>,}nx4
while(top>0){ 1lJY=`8qa
int j=stack[top--]; M2.Pf s
int i=stack[top--]; 3,QsB<9Is
{r$n
$
pivotIndex=(i+j)/2; " 0&+`7
pivot=data[pivotIndex]; X9YYUnR2
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SortUtil.swap(data,pivotIndex,j); FuKp`T-H
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file://partition )U~,q>H+
%
l=i-1; Y~j)B\^{
r=j; '^!1A GF
do{ aIA9rn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O$2'$44HX
SortUtil.swap(data,l,r); ZMI!Sl
} }!W,/=z*
while(l SortUtil.swap(data,l,r); J=*X%^jX9Z
SortUtil.swap(data,l,j); @
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if((l-i)>THRESHOLD){ Buue][[
stack[++top]=i; _2wU(XYH
stack[++top]=l-1; !='?+Ysxs
} xjplJ'jB
if((j-l)>THRESHOLD){ m-M.F9R
stack[++top]=l+1; k6pXc<]8
stack[++top]=j; vwlPFrLl
} dCF!.
!5/jDvh
} }aPx28:/
file://new InsertSort().sort(data); FBR]) h'Z
insertSort(data); $eI=5
} Fk(+S:{yQ
/** D(m2^\O[
* @param data CflGj0oy8
*/ ~; emUU
private void insertSort(int[] data) { \G!TC{6
int temp; 2}ttCm
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _aR_[
} K_fQFuj+
} [|XMR=\>
} P{'T9U|O-
\KGi54&Y
} sI@y)z
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归并排序: A`Nk gVq5:
u Z(vf
package org.rut.util.algorithm.support; r fl-(_3
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import org.rut.util.algorithm.SortUtil; )YB@6TiD
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/** F@76V$U.
* @author treeroot B``)
* @since 2006-2-2 :$>Co\D
* @version 1.0 r&u&$"c
*/ }bW"Z2^nB
public class MergeSort implements SortUtil.Sort{ !c;Z<@
#LGAvFA*_F
/* (non-Javadoc) fO;#;p.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7kQZ$sLc
*/ fG+/p 0sJ?
public void sort(int[] data) { |Sne\N>%
int[] temp=new int[data.length]; -*Voui
mergeSort(data,temp,0,data.length-1); SnK#YQCDt
} P|>pm]>C
4H<@da}
private void mergeSort(int[] data,int[] temp,int l,int r){ .ykCmznf*
int mid=(l+r)/2; vS!%!-F
if(l==r) return ; LQ7.RK
mergeSort(data,temp,l,mid); Xx=jN1=,
mergeSort(data,temp,mid+1,r); O0"u-UX{
for(int i=l;i<=r;i++){ : J3_g<@
temp=data; LSR{N|h+)
} +/bT4TkML
int i1=l; yX%Xjo__*t
int i2=mid+1; !`3q9RT3."
for(int cur=l;cur<=r;cur++){ l"I
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if(i1==mid+1) 9]{(~=D7
data[cur]=temp[i2++]; , ;'y <GA
else if(i2>r) ;^Q- 1
data[cur]=temp[i1++]; $50/wb6s
else if(temp[i1] data[cur]=temp[i1++]; Gk!06
else $P9'"a)Lm
data[cur]=temp[i2++]; yX^/Oc@j
} Rh[%UNl
} @Kx@ 2#~b
s/;iZiWK
} 8f\sG:$
X9J&OQ[W
改进后的归并排序: cv .R`)l
6AM-^S@
package org.rut.util.algorithm.support; =B0#z]qu
Gu3# y"a>
import org.rut.util.algorithm.SortUtil; &YSjwRr
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/** gPo3jw o$
* @author treeroot |#y+iXTJ
* @since 2006-2-2 z'FpP
* @version 1.0 E{Tvjh+
*/ J%Cn
public class ImprovedMergeSort implements SortUtil.Sort { @v#]+9F
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private static final int THRESHOLD = 10; Wfw6(L
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/* H=_ Wio
* (non-Javadoc) BIBBp=+
* mbij& 0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O|5Z-r0<
*/ _P^ xX'v
public void sort(int[] data) { ,#NH]T`c1
int[] temp=new int[data.length]; C78V/{
mergeSort(data,temp,0,data.length-1); *dTI4k
} o7qZy |\4S
>=T\=y
private void mergeSort(int[] data, int[] temp, int l, int r) { &Z.zem?n
int i, j, k; l8$7N=Y
int mid = (l + r) / 2; bv%A;
if (l == r) %, Pwo{SH
return; CDNh9`
if ((mid - l) >= THRESHOLD) "_g3{[es!
mergeSort(data, temp, l, mid); 9d\B*OU
else UBgheu
insertSort(data, l, mid - l + 1); Xy0KZ !
if ((r - mid) > THRESHOLD) ZwC\n(_y
mergeSort(data, temp, mid + 1, r); |#87|XIJ&~
else w9Eb\An
insertSort(data, mid + 1, r - mid); MPexc5_
m(CbMu
for (i = l; i <= mid; i++) { 6 4fB$
temp = data; =;) M+"
} ogOUrJ}P
for (j = 1; j <= r - mid; j++) { QSaJb?I
temp[r - j + 1] = data[j + mid]; 8[z<gxP`?
} K}r@O"6*\
int a = temp[l]; |i}5vT78
int b = temp[r]; _ ?\4k{ET
for (i = l, j = r, k = l; k <= r; k++) { O%>FKU>(?
if (a < b) { R*DQm
data[k] = temp[i++]; 3U_,4qf
a = temp; c`F~vrr)X
} else { 2l8TX #K
data[k] = temp[j--]; "K!9^!4&
b = temp[j]; ZRK1UpP
} Fz3QSr7FU
} iG.qMf.
} _#kjiJj*
y[pU8QSt
/** 8,5H^Bi
* @param data ~ sC< V
* @param l viLK\>>
* @param i Ot^<:\<`G
*/ A `H&"A
private void insertSort(int[] data, int start, int len) { ]tu:V,q
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); o#X=1us
} *Dz<Pi^
} 'QMvj` -
} jn+M L&
} _YT9zG
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堆排序: :epjJ1mW
x}c%8dO#J
package org.rut.util.algorithm.support; G;'=#c
^
B!z-O*fLE1
import org.rut.util.algorithm.SortUtil; _LOV&83O(
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/** K<3$>/|
* @author treeroot y5v}EX`m&
* @since 2006-2-2 w<4,;FFlZ/
* @version 1.0 .t7mTpi
*/ s--\<v
public class HeapSort implements SortUtil.Sort{ :J'ibb1
5W(S~}
/* (non-Javadoc) 2f=7`1RCD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 60A
E~
*/ .QaHE`e{
public void sort(int[] data) { cSkJlhwNn
MaxHeap h=new MaxHeap(); m V U(b,
h.init(data); hZudVBn
for(int i=0;i h.remove(); 4Y=sTXbFt
System.arraycopy(h.queue,1,data,0,data.length); ZRjqjx
} p{sbf;-x}
Ga%x(1U[&
private static class MaxHeap{ &>0ape
il)LkZ@
void init(int[] data){ LvtZZX6!
this.queue=new int[data.length+1]; _;M46o%h
for(int i=0;i queue[++size]=data; y'a(>s(
fixUp(size); P/'9k0zs)
} )R QX1("O
} X~H~k1
TC2gl[
private int size=0; 5_d=~whO&2
0%m}tfQ5
private int[] queue; xEA%UFB.!G
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public int get() { vfh0aW-O
return queue[1]; azUEp8`|
} >-~2:d\M3
q$;'Fy%oy
public void remove() { xSQ0] vE
SortUtil.swap(queue,1,size--); C&\vVNV;9
fixDown(1); 6Wos6_
} ~+y0UEtq7
file://fixdown 6iozb~!Rr
private void fixDown(int k) { ATeXOe
int j; {GaQV-t
while ((j = k << 1) <= size) { B>^5h?(lt
if (j < size %26amp;%26amp; queue[j] j++; l*+"0
if (queue[k]>queue[j]) file://不用交换 :\0q\2e[<
break; U2 tsHm.O
SortUtil.swap(queue,j,k); S+i .@N.^
k = j; "!yKX(aTX
} 4LCgQS6
} "hRY+{m
private void fixUp(int k) { {(DD~~)D
while (k > 1) { ~dIb>[7wy
int j = k >> 1; LNp%]*h
if (queue[j]>queue[k]) iw Hy!Vi-5
break; 6zQ {Y"0
SortUtil.swap(queue,j,k); ZOFhX$I
k = j; XsldbN^6
} 2u[:3K-@,
} ,_66U;T
;%1ob f 89
} =5P_xQx
pai>6p
} (8!#<$
eQk ~YA]K
SortUtil: )e)@_0
TtL2}Wdd.%
package org.rut.util.algorithm; ,w.`(?I/
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import org.rut.util.algorithm.support.BubbleSort; Yx_[vLm
import org.rut.util.algorithm.support.HeapSort; )Oq N\
import org.rut.util.algorithm.support.ImprovedMergeSort; PmtBu`OkV
import org.rut.util.algorithm.support.ImprovedQuickSort; IJ^KYho
import org.rut.util.algorithm.support.InsertSort; >'i
d/
import org.rut.util.algorithm.support.MergeSort; #vy:aq<bjE
import org.rut.util.algorithm.support.QuickSort; U.oxLbJ`
import org.rut.util.algorithm.support.SelectionSort; (~oUd4
import org.rut.util.algorithm.support.ShellSort; ]fXMp*LvY
'3>kD H+
/** 1#AdEd[
* @author treeroot v>3)^l:=Y*
* @since 2006-2-2 9=&e5Oq}
* @version 1.0 QZBXI3%#s
*/ Sf}>~z2
public class SortUtil { |Xblz1>DF
public final static int INSERT = 1; IMY?L
public final static int BUBBLE = 2; d 7A08l{
public final static int SELECTION = 3; pRtxyL"y
public final static int SHELL = 4; 47_4`rzy;
public final static int QUICK = 5; ?~rF3M.=|
public final static int IMPROVED_QUICK = 6; O)MKEMuA
public final static int MERGE = 7; ^R.#n[-r2
public final static int IMPROVED_MERGE = 8; 0&U,WA
public final static int HEAP = 9; Xj^6ZJc
G7k0P-r,0
public static void sort(int[] data) { $Yt29AQ
sort(data, IMPROVED_QUICK); \#5t%t
} M}4%LjD
private static String[] name={ O6P0Am7s
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W[o~AbU
}; a z
7Vy-
UXvk5t1
private static Sort[] impl=new Sort[]{ %T*lcg
new InsertSort(), T0W B
new BubbleSort(), buo_H@@p{s
new SelectionSort(), rt%.IQdY
new ShellSort(), *b?C%a9
new QuickSort(), ?H7*? HV
new ImprovedQuickSort(), -
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new MergeSort(), oC>QJ(o,8
new ImprovedMergeSort(), . m_y5J
new HeapSort() L0SeG:
}; &I.UEF2,
mt7}1s,i[
public static String toString(int algorithm){ /%Bc*k=ox
return name[algorithm-1]; sk!v!^\_r
} Wy%q9x]}
QP|Ou*Qm)
public static void sort(int[] data, int algorithm) { =+q9R`!L]
impl[algorithm-1].sort(data); vq*N
} \)VV6'zih
p_Fc:%j>
public static interface Sort { SN|EWe^
public void sort(int[] data); (yE?)s
} ~=HN30
w[z^B&
public static void swap(int[] data, int i, int j) { 5O&6 (Gaf
int temp = data; cb l@V 1
data = data[j]; ^_JD
7-g
data[j] = temp; ;Jt*s
} SF 61rm
} .ag4i;hS8