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。 x[m'FsR4
插入排序: $PfV<Yj'B
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package org.rut.util.algorithm.support; mSj76'L#
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import org.rut.util.algorithm.SortUtil; lWl-@*'
/** xDe47&qKM
* @author treeroot &(\@sxAyZ
* @since 2006-2-2 ?xHtn2(q
* @version 1.0 '?L%F{g/9
*/ ?lG;,,jc,W
public class InsertSort implements SortUtil.Sort{ (E]"Srwh
XkoW L
/* (non-Javadoc) ,yi2O]5e>!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vcD'~)G(*
*/ 6Wu*.53
public void sort(int[] data) { InX{V|CW?
int temp; o;'4c
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fsb=8>}63}
} Pu/lpHm|
} +wjlAqMQ
} ]J~g'">
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} ^AH-+#5
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冒泡排序: @>9A$w$H|a
v*gLNB,ZH
package org.rut.util.algorithm.support; H.;yLL=
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import org.rut.util.algorithm.SortUtil; Kk56/(_S
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/** `i{4cT8:
* @author treeroot ^"/Dih\_
* @since 2006-2-2 9/QS0
* @version 1.0 K+t];(
*/ 0wYiu
public class BubbleSort implements SortUtil.Sort{ :EaiM J_=
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/* (non-Javadoc) ^8U6"O6|X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a#6,#Q"
*/ A9.;>8!u
public void sort(int[] data) { 92NC]_jw
int temp; 8s&2gn1
for(int i=0;i for(int j=data.length-1;j>i;j--){ Bzwx0c2VY8
if(data[j] SortUtil.swap(data,j,j-1); qIUC2,&g
} zVn* !c
} #s/{u
RYQ
} hG[4O3jo\
} c8!j6\dC*
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} s=}~Q&8
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选择排序: rQuOt
4jPwL|#
package org.rut.util.algorithm.support; 3Y=,r!F.h
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import org.rut.util.algorithm.SortUtil; fLc!Sn.Y
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/** T=Ol`?5
* @author treeroot 2@OBeR
* @since 2006-2-2 A1Ibx|K
* @version 1.0 /G[+E&vj
*/ AIf[W">\
public class SelectionSort implements SortUtil.Sort { FW5*_%J
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/* R\i]O
* (non-Javadoc) FK?mS>G6
* )62q|c9F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'G3+2hah
*/ }b<87#Nb9R
public void sort(int[] data) { vC s6#PR$
int temp; u>j 5`OXo
for (int i = 0; i < data.length; i++) { FDZeIj9uF
int lowIndex = i; w@4t$bd7
for (int j = data.length - 1; j > i; j--) { f45;fT>
if (data[j] < data[lowIndex]) { I}I}K~se*
lowIndex = j; &3+1D1"y/
} P<TpG0~(
} Gl dH SCy
SortUtil.swap(data,i,lowIndex); c
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} ]wJ}-#Kx
} @|jKO5Y
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} {IF}d*:
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Shell排序: 9
kTD}" %2
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package org.rut.util.algorithm.support; mRg ,A\
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import org.rut.util.algorithm.SortUtil; tRpL0 =y
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/** }L{_xyi>#
* @author treeroot OtrXYiKB
* @since 2006-2-2 #3 }5cC8_
* @version 1.0 wC4AVJJ^>
*/ tU-#pB>H
public class ShellSort implements SortUtil.Sort{ Rh05W_?Js
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/* (non-Javadoc) !HT>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3N)Ycf8
*/ J7 Oa})-+'
public void sort(int[] data) { BXKlO(7
for(int i=data.length/2;i>2;i/=2){ `2Z4#$.
for(int j=0;j insertSort(data,j,i); =0jmm(:Jh
} |e.3FjTH
} )l 4>=y
insertSort(data,0,1); xIq"[?m
} OXa5Jg}=
rTm>8et
/** 3.GdKP.%
* @param data l>[QrRXiSN
* @param j h>mBkJ
{
* @param i E@'CU9Fo
*/ )\:lYI}Wpm
private void insertSort(int[] data, int start, int inc) { OLd$oxKR
int temp; Occ8Hk/l.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); inq4CGY
} v3VLvh2)n
} 0qotC6l~_w
} NXV~[
C4X{Ps\
} f;_K}23
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快速排序: k8t Na@H
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package org.rut.util.algorithm.support; $.x?in|_
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import org.rut.util.algorithm.SortUtil; ,&pF:qlF
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/** Ej{eq^n
* @author treeroot %+j]vP
* @since 2006-2-2 s].'@_~s
* @version 1.0 F%ylR^H>
*/ 9<0$mE^:
public class QuickSort implements SortUtil.Sort{ l#5k8+s
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/* (non-Javadoc) :b3lJ-dB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uq#h\p|
*/ bCac.x#jo
public void sort(int[] data) { >sl1 cC
quickSort(data,0,data.length-1); [(.T%kJ
} 8d*<Aki?;
private void quickSort(int[] data,int i,int j){ #uR q] 'P
int pivotIndex=(i+j)/2; ?T%K +
file://swap 'zD;:wT
SortUtil.swap(data,pivotIndex,j); %q\P 'cK
kAe-d
int k=partition(data,i-1,j,data[j]); z6>ZV6(d2^
SortUtil.swap(data,k,j); 5yN8%_)T
if((k-i)>1) quickSort(data,i,k-1); H*
JC`:
if((j-k)>1) quickSort(data,k+1,j); (Q
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} ]F)-}
/** k`J..f9
* @param data N=?kEX
O
* @param i x2IU PM
* @param j 0tm "kzy
* @return Nz;*;BQK:
*/ `] dx%
private int partition(int[] data, int l, int r,int pivot) { ) GT?Wd
do{ i(cb&;Xx:A
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~[/c'3+4qn
SortUtil.swap(data,l,r); z%gtV'
} ^1&
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while(l SortUtil.swap(data,l,r); s!RA_%8/>
return l; :8!3*C-=
}
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} 1?#p !;&
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改进后的快速排序: R{y{
tVh4v#@+
package org.rut.util.algorithm.support; R~c vml
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import org.rut.util.algorithm.SortUtil; ``)1`wx$
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/** lJ1xx }k{U
* @author treeroot T9v#Jb6
* @since 2006-2-2 fy-Z{
* @version 1.0 j I@$h_n
*/ ?RAR
public class ImprovedQuickSort implements SortUtil.Sort { +
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private static int MAX_STACK_SIZE=4096; zZ0V6T}
private static int THRESHOLD=10; Cspm\F
/* (non-Javadoc) 92ww[+RQ@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1?$!y
*/ 2_~XjwKE
public void sort(int[] data) { nVA'O
int[] stack=new int[MAX_STACK_SIZE]; |}y}o:(
dX}dO)%m{
int top=-1; ,
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int pivot; IMw)X0z
int pivotIndex,l,r; %1+~(1P
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stack[++top]=0; tZ24}~da
stack[++top]=data.length-1; KK3xz*W0
T@.m^|~
while(top>0){ naCI55Wx
int j=stack[top--]; z"C(#Y56 x
int i=stack[top--]; ij5=f0^4.
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pivotIndex=(i+j)/2; I{ZPv"9j^
pivot=data[pivotIndex]; Zd/~ *ZA
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SortUtil.swap(data,pivotIndex,j); 0$Db@
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file://partition :=7;P)
l=i-1; XFAt\g
r=j; -"fq34v
do{ -t#a*?"$w
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o5@P>\u>
SortUtil.swap(data,l,r); 5!{g6=(
} ##ea-"m8
while(l SortUtil.swap(data,l,r); #/=yz<B
SortUtil.swap(data,l,j); ;9\0x
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if((l-i)>THRESHOLD){ m:<3d]L
stack[++top]=i; p<['FRf"
stack[++top]=l-1; ri V/wN9C
} {!bJ.O
l
if((j-l)>THRESHOLD){ ~7lvY+k)<
stack[++top]=l+1; )cBV;
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stack[++top]=j; qf$|z`c
} 1h0ohW
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} `3s-\>
file://new InsertSort().sort(data); 6_><W"r:]
insertSort(data); BV:,bS
} j !n> d
/** YAG3PWmD
* @param data Z6ex<[`I
*/ ?kefRev<#h
private void insertSort(int[] data) { f^)nZ:~
int temp; Q'M Ez
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'J2P3t
} WX"M_=lc-@
} nQVBHL>
} lY?d*qED
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} IKpx~
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归并排序: f#MN-1[67
/YR$#&N2
package org.rut.util.algorithm.support; /aEQ3x
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import org.rut.util.algorithm.SortUtil; tC~itU=V
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/** GQNiBsV
* @author treeroot P6'I:/V
* @since 2006-2-2 +:Zi(SuS]
* @version 1.0 e@VRdhb
*/ ^yZEpQN_
public class MergeSort implements SortUtil.Sort{ I2Rp=L:z5
E:OeU_\
/* (non-Javadoc) AtYYu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) en":
*/ 8R D)yRJ
public void sort(int[] data) { pU/.|Sh
int[] temp=new int[data.length]; >GRuS\B
mergeSort(data,temp,0,data.length-1); %c{)'X
} 5E|2S_)G
|g+5rVbd
private void mergeSort(int[] data,int[] temp,int l,int r){ F9hWB17u
int mid=(l+r)/2; U\6DEnII?!
if(l==r) return ; "G(/MT^C
mergeSort(data,temp,l,mid); =?aB@&
mergeSort(data,temp,mid+1,r); __npX_4%S
for(int i=l;i<=r;i++){ gC 4#!P
temp=data; (k45k/PAP
} =,]M$M
int i1=l; %V/]V,w:*R
int i2=mid+1; wUndNE
for(int cur=l;cur<=r;cur++){ YT8`Vz$+
if(i1==mid+1) [i _x
1
data[cur]=temp[i2++]; {`55nwd
else if(i2>r) xn[di-LF
data[cur]=temp[i1++]; Xs_y!l
else if(temp[i1] data[cur]=temp[i1++]; 2uEu,YC
else N*W.V,6yH
data[cur]=temp[i2++]; AG2jl/
} c5pG?jr+d
} e)7r
#YdU,y=B
} ?sE21m?b-
gV BV@v!W
改进后的归并排序: OwUbm0)h^V
X=~QE}x
package org.rut.util.algorithm.support; #n
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import org.rut.util.algorithm.SortUtil; y0]O 6.{
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/** Vo[4\h#$
* @author treeroot 2T5ZbXc+x
* @since 2006-2-2 *ni|I@8
* @version 1.0 iL<O|' be
*/ J$[Vm%56
public class ImprovedMergeSort implements SortUtil.Sort { Sa5 y7
eH6cBX#P.
private static final int THRESHOLD = 10; cB^lSmu5
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/* l:HuG!
* (non-Javadoc) e+U o-CO
* Vo()J4L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6WZp&pO
*/ <D}k@M
Z
public void sort(int[] data) { K~R{q+
int[] temp=new int[data.length]; C/G[B?:h
mergeSort(data,temp,0,data.length-1); j/&7L@Y
} 7dZ!GX?\y
{rQ`#?J}^?
private void mergeSort(int[] data, int[] temp, int l, int r) { 8wOPpdc
int i, j, k; ,H8Pmn?
int mid = (l + r) / 2; 7
pV3#fQ
if (l == r) uDR(^T{g#
return; L\I/2aiE
if ((mid - l) >= THRESHOLD) ~MF. M8
mergeSort(data, temp, l, mid); _nUuiB>
else (X/JXu{
insertSort(data, l, mid - l + 1); "^`AS"z'
if ((r - mid) > THRESHOLD) qS>el3G
mergeSort(data, temp, mid + 1, r); A\>qoR!Y
else &/p9+gd
insertSort(data, mid + 1, r - mid); X*@Sj;|m
; V8 =B8w
for (i = l; i <= mid; i++) { sKtH4d5)
temp = data; >b0}X)Z+U
} }<p%PyM
for (j = 1; j <= r - mid; j++) { I]58;|J
temp[r - j + 1] = data[j + mid]; L 'y+^L|X
} vHmn)d1pl
int a = temp[l]; b.(^CYYQ
int b = temp[r]; 7JbrIdDl|
for (i = l, j = r, k = l; k <= r; k++) { #%~wuCn<K
if (a < b) { u}$3.]-.?T
data[k] = temp[i++]; kmwFw>#
a = temp; $v,_8{ !
} else { xp=
]J UQ
data[k] = temp[j--]; n7vi@^lf(
b = temp[j]; hdzaU&w
} p6p_B
} h1$,
} PYGHN
T
*P>F#
~X
/** ~7|z 2L
* @param data ^<c?I re
* @param l K2JS2Y]
* @param i H|]Q;,C
*/ x\WKsc
private void insertSort(int[] data, int start, int len) { ``{xm1GK
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GI/o!0"_
} 70@:!HI]
} bA:abO
} q-'zZ#
} 8l6R.l
1QThAFN
堆排序: @L0.Z1 ).
sqhM[u
k
package org.rut.util.algorithm.support; }QK-@T@4<
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import org.rut.util.algorithm.SortUtil; B4%W,F:@
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/** "\30YO>\
* @author treeroot *5^h>Vk/
* @since 2006-2-2 :0/I2:
* @version 1.0 ;TYkJH"
*/ ~ ~&M&Fe
public class HeapSort implements SortUtil.Sort{ k2~j:&p
-O\`G<s%
/* (non-Javadoc) yfj<P/aA+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u7K0m!
jW
*/ 1:?WvDN=
public void sort(int[] data) { \7RP6o
MaxHeap h=new MaxHeap(); qbjRw!2?w
h.init(data); o4xZaF4+
for(int i=0;i h.remove(); :7'anj
System.arraycopy(h.queue,1,data,0,data.length); \O[Cae:^?
} n,`&f~tap
`3~w#?+=*
private static class MaxHeap{ [dL#0~CL$
rLVS#M#&e>
void init(int[] data){ /J^yOR9
this.queue=new int[data.length+1]; O3S_P]{*ny
for(int i=0;i queue[++size]=data; mU;TB%#)
fixUp(size); yA~W|q(/V
} N7XRk=J
} krgsmDi7
_("{fJ,A
private int size=0; o`G@Je_}x
>Py=H+d!j
private int[] queue; UPH:$Fk&
F[LBQI`zq
public int get() { RX'(
l
return queue[1]; pl5!Ih6
} M*nfWQ
a
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public void remove() { k z<We/
SortUtil.swap(queue,1,size--); )tB mSVprl
fixDown(1); R4{2+q=0
} )]'?yS"
file://fixdown 13Q|p,^R
private void fixDown(int k) { ^$VOC>>9
int j; E}UlQq
while ((j = k << 1) <= size) { H13|bM<
if (j < size %26amp;%26amp; queue[j] j++; dAR):ZKq?
if (queue[k]>queue[j]) file://不用交换 [E+#+-n7
break; 1N2s[ \q$
SortUtil.swap(queue,j,k); m8.sHw
k = j; 99vm7"5 hQ
} 9M<{@<]dm
} d+$a5 [^9
private void fixUp(int k) { c8A
//
while (k > 1) { !$P&`n]@
int j = k >> 1; S7@.s`_{w
if (queue[j]>queue[k]) G0^NkH,k
break; 0GEK xV\F
SortUtil.swap(queue,j,k); F]xo *
k = j; '6WaG
hvO
} 1qtu,yIf
} in$Pk$ c
D{~I
} 5F$W^N
smJ%^'x
} |nIm$ p'
7i`8 c =.
SortUtil: |oa9 g2
IWX%6*Zz
package org.rut.util.algorithm; d
n3sh<
R["_Mff
import org.rut.util.algorithm.support.BubbleSort; ^8-CUH\
import org.rut.util.algorithm.support.HeapSort; j*xxOwf
import org.rut.util.algorithm.support.ImprovedMergeSort; {x
s{
import org.rut.util.algorithm.support.ImprovedQuickSort; k1W
q$KCwG
import org.rut.util.algorithm.support.InsertSort; iXeywO2nP
import org.rut.util.algorithm.support.MergeSort; zmF_-Q`c
import org.rut.util.algorithm.support.QuickSort; r!'\$(m E
import org.rut.util.algorithm.support.SelectionSort; [;%qxAB/_
import org.rut.util.algorithm.support.ShellSort; 1t6VS 3
5\lOZYHX
/** F.zn:y X5
* @author treeroot H1]G<N3
* @since 2006-2-2 qdWsP9}q
* @version 1.0 v<$a .I(
*/
hT]\*},
public class SortUtil { X0O@,
public final static int INSERT = 1; #}3$n/
public final static int BUBBLE = 2; WbB0{s
public final static int SELECTION = 3; +Ccj@#M;
public final static int SHELL = 4; X2v|O3>/N
public final static int QUICK = 5; @#xh)"}
public final static int IMPROVED_QUICK = 6; blEs!/A`
public final static int MERGE = 7; {dTtYL$'"
public final static int IMPROVED_MERGE = 8; @|sDb?J
public final static int HEAP = 9; A70x+mjy^T
=y.? =`"
public static void sort(int[] data) { |p}qK
Fdi
sort(data, IMPROVED_QUICK); /z9oPIJ=*
} QE1DTU
private static String[] name={ #**vIwX-Q
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3!ZndWSHV
}; A@^Y2:pY
}j;*7x8(
private static Sort[] impl=new Sort[]{ *DcJ).
new InsertSort(), :_X9x{
new BubbleSort(), (< gk<e*
new SelectionSort(), gZ8n[zxf6
new ShellSort(), H:TRJ.!w2
new QuickSort(), ju~js
new ImprovedQuickSort(), HG{r\jh
new MergeSort(), W{B)c?G]
new ImprovedMergeSort(), B@U;[cO&
new HeapSort() >,wm-4&E
}; bxLeQWr6
)2~Iqzc4
public static String toString(int algorithm){ Ev+m+
return name[algorithm-1]; Z:j6AF3;
} b=(?\
w,f1F;!q1
public static void sort(int[] data, int algorithm) { '7Q5"M'
impl[algorithm-1].sort(data); XpFW(v
} 1w*DU9f
U 51C /A
public static interface Sort { &]~Vft
l
public void sort(int[] data); qn=~4rg]R
} I*hCIy#;
g:V8"'
public static void swap(int[] data, int i, int j) { ]rU$0)VN
int temp = data; [Vzp D 4
data = data[j]; JO{Rth
data[j] = temp; WCJ$S\#
} QU{|S.\
} K)=<hL