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。 sTKab
:
插入排序: 8lU;y)Z
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package org.rut.util.algorithm.support; 5wzQ?07T_
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import org.rut.util.algorithm.SortUtil; ojN`#%X
/** ?@Z7O.u
* @author treeroot <KHv|)ak
* @since 2006-2-2 Q?*
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* @version 1.0 H{j~ihq7
*/ wD<vg3e[H
public class InsertSort implements SortUtil.Sort{ 5*JV )[
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/* (non-Javadoc) %:"
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ky'|Wk6
*/ a<f;\$h]
public void sort(int[] data) { zo_k\K`{@
int temp; ijvNmn1k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r@|R-Binz
} T1lXYhAWS
} ISpeV
} eZynF<i
:6 Uk)
}
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冒泡排序: S8*^ss>?^R
5+y@ ]5&g
package org.rut.util.algorithm.support; G+ :bL S#:
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import org.rut.util.algorithm.SortUtil; VKT@2HjNT`
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/** I") H~
* @author treeroot zTkFX67)
* @since 2006-2-2 3 sS=?q
* @version 1.0 !IO&&\5
*/ 0FG5_t"",\
public class BubbleSort implements SortUtil.Sort{ p9/bzT34.
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/* (non-Javadoc) p:Iw%eZ:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bp&6x;MJf
*/ f8^"E $"
public void sort(int[] data) { (})]H:W7
int temp; {G Ub'J
for(int i=0;i for(int j=data.length-1;j>i;j--){ &K06}[J
if(data[j] SortUtil.swap(data,j,j-1); +*n]tlk
} b+W)2rFO
} ah 4kA LO
} W7%p^;ZQ$
} P`}$-#D F
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} $RpFxi
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选择排序: <H<!ht%q3
\.5F](:
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; &8Zeq3~
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/** j0AwL7
* @author treeroot }|AX_=a
* @since 2006-2-2 >+L7k^[,0
* @version 1.0 |Es0[cU
*/ Ny[QT*nV
public class SelectionSort implements SortUtil.Sort { (viWY
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/* 4/b(Y4$,[r
* (non-Javadoc) ,cLH*@
* t5%TS:u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9`&?hi49nK
*/ S3ErH,XB.
public void sort(int[] data) { 0%/,>IR>r
int temp; |4=ihB9+
for (int i = 0; i < data.length; i++) { iA]DE`S
int lowIndex = i; n4Vwao/9x
for (int j = data.length - 1; j > i; j--) { ^Fn%K].X
if (data[j] < data[lowIndex]) { Bu&So|@TL
lowIndex = j; 'Cg V0&@
} >xZ5ac
I
} d60c$?"]a(
SortUtil.swap(data,i,lowIndex); qbH%Hx
} U4]30B{;H
} i)=m7i
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8
} Pv~: gP
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Shell排序: (/-lV&eR
NJk)z&M
package org.rut.util.algorithm.support; AHq M7+r9
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import org.rut.util.algorithm.SortUtil; iZC>)&ax
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/** C(}^fJ6r
* @author treeroot JT}.F!q6E
* @since 2006-2-2 E!uJ6\
* @version 1.0 emA.{cVr!
*/ I4ebkP gf
public class ShellSort implements SortUtil.Sort{ 36nyu_h:R
$_wo6/J5+D
/* (non-Javadoc) {aoMJJq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -U7,k\g
*/ k; ;viT
public void sort(int[] data) { grc:Y
for(int i=data.length/2;i>2;i/=2){ >}CEN
for(int j=0;j insertSort(data,j,i); M%3Wy"YQ,n
} GKCM|Y
} _p0)vT
insertSort(data,0,1); f$vwuW
} 0iF -}o
ndqckT@93
/** "sD1T3!\)Q
* @param data Z0aUHWms
* @param j wE?CvL
* @param i 7N|
AA^I
*/ cu)U7
private void insertSort(int[] data, int start, int inc) { -A}zJBcR
int temp; "w9`cz9a~J
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); YKY2Cw
} rmsQt
} &f"T,4Oh
} 7|Xe&o<n
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} b;*c:{W)
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快速排序: Zb"jB$58
PYu$1o9+N
package org.rut.util.algorithm.support; a_MFQf&KV
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import org.rut.util.algorithm.SortUtil; w763zi{
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/** WtVf wC_
* @author treeroot /9Z!p
* @since 2006-2-2 M1EOnq4-
* @version 1.0 Jr]gEBX
*/ *!w25t
public class QuickSort implements SortUtil.Sort{ 2$tQ @r
ctHEEFWm
/* (non-Javadoc) F{\=PCZ>7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #jm@N7OZ
*/ =DC3a3&%
public void sort(int[] data) { x)_r@l`$ix
quickSort(data,0,data.length-1); NJm-%K
} Wxn#Rk#>
private void quickSort(int[] data,int i,int j){ #3+~.,X9
int pivotIndex=(i+j)/2; 0p `")/
file://swap ke\[wa_!6b
SortUtil.swap(data,pivotIndex,j); W+\?~L.
!VRo*[yD@
int k=partition(data,i-1,j,data[j]); TM-Fu([LMV
SortUtil.swap(data,k,j); AuXs B
if((k-i)>1) quickSort(data,i,k-1); W~yLl%
if((j-k)>1) quickSort(data,k+1,j); s&VOwU
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} Zw#<E
=\
/** |mOMRP#'
* @param data Pj&A=
* @param i r**f,PDZ
* @param j *gDl~qNRoS
* @return NH4?q!'G
*/ ^Q\XGl
private int partition(int[] data, int l, int r,int pivot) { qe%V#c
do{ ,rai%T/rL
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I0_Ecp
SortUtil.swap(data,l,r); N571s
} u{Ak:0G7
while(l SortUtil.swap(data,l,r); c0ZaFJ
return l; N&m_e)E5c
} 5gshKmt_
)~dOmfw%|
} PS}73Y#
M)O[j}N
改进后的快速排序: 6.19g'{sB
1qZG`Vz
package org.rut.util.algorithm.support; >pdnCv_c
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import org.rut.util.algorithm.SortUtil; !}t-j3bCs
V%51k{
/** ISBF\ wQY
* @author treeroot (:7a&2/M
* @since 2006-2-2 ]]PE#DDg
* @version 1.0 S3y246|4
*/ ]2$x|#Gg}
public class ImprovedQuickSort implements SortUtil.Sort { >
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#c:kCZt#
private static int MAX_STACK_SIZE=4096; m#n]Wgp'
private static int THRESHOLD=10; 8wmQ4){
/* (non-Javadoc) b 4OnZ;FI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P)hi||[
*/ ;_N5>3C:
public void sort(int[] data) { (O0byu}
int[] stack=new int[MAX_STACK_SIZE]; p[qg&VKB
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int top=-1; gr+Pl>C{
int pivot; M*`hDdS
int pivotIndex,l,r; y/tSGkMv
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stack[++top]=0; F0.z i>5
stack[++top]=data.length-1; (w$'o*z;(
;==j|/ERe
while(top>0){ cmDT
+$s
int j=stack[top--]; +`}o,z/^
int i=stack[top--]; D/:3RZF
%*K;np-q{
pivotIndex=(i+j)/2; YtYy zX5u7
pivot=data[pivotIndex]; th
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b-%l-u
SortUtil.swap(data,pivotIndex,j); f^e&hyC
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file://partition ;;Tq$#vd
l=i-1; -?fR|[\[U
r=j; g~)3WfC$[
do{ Nw pS)6<-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); QBihpA1;
SortUtil.swap(data,l,r); ^l(^z fsZ
} ^P$7A]!
while(l SortUtil.swap(data,l,r); FYl3c
SortUtil.swap(data,l,j); B^q<2S;
Z@M6!;y#
if((l-i)>THRESHOLD){ \fi}Q\|C
stack[++top]=i; Nfb`YU=
stack[++top]=l-1; X-/Ban
} qqvF-mDN
if((j-l)>THRESHOLD){ A[JM4x
stack[++top]=l+1; iLtc
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stack[++top]=j; #jP/k.
} %l|\of7P2}
|' ;7v)CIG
} |^Kjz{
file://new InsertSort().sort(data); 7I
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insertSort(data); l$M +.GB<
} gtYRV*^q
/** ab4LTF|
* @param data !y*oF{RZ
*/ (U9a@1
private void insertSort(int[] data) { 1exfCm
int temp; 0>@[o8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y/lN@
} c-*2dV[@
} 6+PGwCS
} (h,Ws-O
vr4S9`,
} Ue7 6py9
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归并排序: <|H?gfM
WQKj]:qk0
package org.rut.util.algorithm.support; OKPJuV`y6
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import org.rut.util.algorithm.SortUtil; GV6mzD@<
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/** m
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* @author treeroot v3-?CQb(
* @since 2006-2-2 I%xn,u
* @version 1.0 Xw^X&Pp
*/ &t_h'JX&
public class MergeSort implements SortUtil.Sort{ c#pj :f*H
(.Xr#;\(
/* (non-Javadoc) 1JeJxzv>C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PAoX$q
*/ r\xXU~$9v
public void sort(int[] data) { KY+]RxX
int[] temp=new int[data.length]; <'2u
a
mergeSort(data,temp,0,data.length-1); j04/[V)
} x+:zq<0|
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private void mergeSort(int[] data,int[] temp,int l,int r){ #U@| J}a
int mid=(l+r)/2; t?3BCm$Mi
if(l==r) return ; ?D=8{!R3
mergeSort(data,temp,l,mid); qd(hQsfqYU
mergeSort(data,temp,mid+1,r); |M E{gy`5
for(int i=l;i<=r;i++){ yekRwo|
temp=data; ]>8)|]O6n
} dtTlIhh1V
int i1=l;
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int i2=mid+1; 3cThu43c
for(int cur=l;cur<=r;cur++){ [Vp\$;\nT
if(i1==mid+1) Le&;g4%
data[cur]=temp[i2++]; T 2|:nC)@
else if(i2>r) J"&y|;G
data[cur]=temp[i1++]; oEIqA
else if(temp[i1] data[cur]=temp[i1++]; zs8I
else v<&v]!nF
data[cur]=temp[i2++]; sykFSPy`'
} e/94y6*>
} [z+x"9l0!
>EIrw$V$
} x'i0KF
}n[Bq#
改进后的归并排序: ,`
o+ ?
Jck"Ks
package org.rut.util.algorithm.support; kl<g;3
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import org.rut.util.algorithm.SortUtil; 2.qpt'p[
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/** !Uy>eji}
* @author treeroot e1^l.>2d6
* @since 2006-2-2 |yv]Y/=
* @version 1.0 c&e0OV\m
*/ ^Y 7U1I
public class ImprovedMergeSort implements SortUtil.Sort { ZNL5({lv
s=U\_koyH
private static final int THRESHOLD = 10; ke6n/ h5`
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/* FL&dv
* (non-Javadoc) s<VJ`Ur
* LyP`{_"CM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a}yR p
*/ OjATSmZ@@
public void sort(int[] data) { FmI;lVF0j
int[] temp=new int[data.length]; :mp$\=
mergeSort(data,temp,0,data.length-1); tJm{I)G
} Tf[dZ(+\
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private void mergeSort(int[] data, int[] temp, int l, int r) { v,0<9!'v
int i, j, k; })7K S?
int mid = (l + r) / 2; /7vE>mSY
if (l == r) f?-J#x)
return; VIg\]%qse
if ((mid - l) >= THRESHOLD) FG#nap{
mergeSort(data, temp, l, mid); hS_.l}0yf
else iT$d;5_pU
insertSort(data, l, mid - l + 1); vZk9gGjk
if ((r - mid) > THRESHOLD) `^e*T'UPl
mergeSort(data, temp, mid + 1, r); Wr#~GFg
else 3+zzi
insertSort(data, mid + 1, r - mid); qc&jd
r?$&Z^
for (i = l; i <= mid; i++) { acae=c|X
temp = data; }.t^D|
} ^O \q3HA_4
for (j = 1; j <= r - mid; j++) { {*fUJmao"
temp[r - j + 1] = data[j + mid]; 5M.Red.L
} D aDUK?
int a = temp[l]; O!
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int b = temp[r]; # JFYws
for (i = l, j = r, k = l; k <= r; k++) { GhiHA9.
if (a < b) { nX 8B;*p6b
data[k] = temp[i++]; g]4yAV<2
a = temp; ,!H\^Vfl
} else { D6:DrA:
data[k] = temp[j--]; kQ[Jo%YT?E
b = temp[j]; 2-7Z(7G{ F
} mtX31M4
} Gw`/.0
} tvCcyD%w
-R8/`M8GbD
/** //tT8HX
* @param data #/s7\2
* @param l NfqJ=9
* @param i Yx 3|G
*/ /N%zwj/*
private void insertSort(int[] data, int start, int len) { g/B\ObY
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v^\JWPR/
} MYu`c[$jZ
} ydyG}XI7V
} cdDY]"k
} SctJxY(}!
1yJ75/
堆排序: SdSgn |S
bq: [Nj
package org.rut.util.algorithm.support; n{$}#NdV
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import org.rut.util.algorithm.SortUtil; /} a_8iM\
OQ,}/
/** W[fT
R?n
* @author treeroot ZIe +
* @since 2006-2-2 ka8$dfC
* @version 1.0 ajGcKyj8i
*/ FvAbh]/4
public class HeapSort implements SortUtil.Sort{ s!aO*\[<h
W7$s5G,
/* (non-Javadoc) y,V6h*x2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9u?Eb~#$
*/ 3? };
public void sort(int[] data) { X'xUwT|_+
MaxHeap h=new MaxHeap(); n_1jHJo
h.init(data); /Bh>
for(int i=0;i h.remove(); @Jm.HST#S8
System.arraycopy(h.queue,1,data,0,data.length); {x9j_/R
} Xout:dn
[.ey_}X8
private static class MaxHeap{ 3Qk/ Ll
nPcxknl(pd
void init(int[] data){ a^(2q{*
this.queue=new int[data.length+1]; n
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for(int i=0;i queue[++size]=data; {N"*olx
fixUp(size); 7MoR9,(
} z>7=k`x`:
} }'v{dK
%uj[ `
private int size=0; .(JE-upJ"
hRa\1Jt>a
private int[] queue; *^uGvJXF
p1kl LX
public int get() { ^] i"
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return queue[1]; ?P%|P
} %n4@[fG%K
&{BBxv)y
public void remove() { ?THa5%8f
SortUtil.swap(queue,1,size--); J}:&eS
fixDown(1); ed=n``P~}
} #jOOsfH|k
file://fixdown dV)Y,Yx0${
private void fixDown(int k) { X=JFWzC
int j; J0Jr
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while ((j = k << 1) <= size) { ~m!#FTc*
if (j < size %26amp;%26amp; queue[j] j++; :MK:TJV
if (queue[k]>queue[j]) file://不用交换 1E8$% 6VV
break; uL
bp.N8
SortUtil.swap(queue,j,k); (VfwLo>#
k = j; &<`-:x1 2_
} u2Y N[|V
} re]%f"v:5
private void fixUp(int k) { pa>p%
while (k > 1) { gAj0ukX5
int j = k >> 1; tB]`Hj
if (queue[j]>queue[k]) =[ s8q2V
break; @51z-T
SortUtil.swap(queue,j,k); l+|1G
k = j; cW=Qh-`jU;
} DE'Xq6#PK
} d8rBu jT
GI}4,!^N
} Sw yaYK
nT_*EC<.
} F
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p@vpd
SortUtil: " 98/HzR
u$ap H{
package org.rut.util.algorithm; %B[YtWqm`/
:wFb5"
import org.rut.util.algorithm.support.BubbleSort; fdN45in=>
import org.rut.util.algorithm.support.HeapSort; "&@gX_%
import org.rut.util.algorithm.support.ImprovedMergeSort; j[_t6Z
import org.rut.util.algorithm.support.ImprovedQuickSort; )uANmThOz
import org.rut.util.algorithm.support.InsertSort; _MGNKA6JI
import org.rut.util.algorithm.support.MergeSort; ;9}w|!/
import org.rut.util.algorithm.support.QuickSort; o1
jk=
import org.rut.util.algorithm.support.SelectionSort; 3xRM
1GgO
import org.rut.util.algorithm.support.ShellSort; n/xXQ7y
|!{z?
i
/** m"5{D*|
* @author treeroot ~u};XhZ
* @since 2006-2-2 sq6>DuBZz
* @version 1.0 T@B"BoKU
*/ 7We?P,A\;
public class SortUtil { su,`q
public final static int INSERT = 1; , - QR
public final static int BUBBLE = 2; q
sv+.aW
public final static int SELECTION = 3; @P*ylB}?Q
public final static int SHELL = 4; c]GQU
public final static int QUICK = 5; Lc58lV=
public final static int IMPROVED_QUICK = 6; P;^y|0Nm
public final static int MERGE = 7; J>&[J!>r
public final static int IMPROVED_MERGE = 8; CR%D\I$o
public final static int HEAP = 9; c$@`P
d,zp`S
public static void sort(int[] data) { VEL:JsY
sort(data, IMPROVED_QUICK); FX{~"
} " ]aQ Hh]f
private static String[] name={ AEB/8%l};v
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gmXy>{T
}; &B?@@6
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private static Sort[] impl=new Sort[]{ [Bl
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new InsertSort(), _`TepX R
new BubbleSort(), Rbx97(wK
new SelectionSort(), kJHr&=VO~
new ShellSort(), U*
-% M
new QuickSort(), `2Wl
new ImprovedQuickSort(), >L#];|
new MergeSort(), 3 %z
new ImprovedMergeSort(), H|grbTv,
new HeapSort() &mX5&e
}; `Af{H/qiI
/p[|DJoM
public static String toString(int algorithm){ b{Z^)u2X
return name[algorithm-1]; AQE
eIFH
} *!._Ais,\
6XQ*:N/4al
public static void sort(int[] data, int algorithm) { WAtg
impl[algorithm-1].sort(data); j9{O0[v
} ^>3tYg&7
L4MxU 2
public static interface Sort { $ \? N<W
public void sort(int[] data); x, G6\QmA
} i}.{m Et
qzuQq94k
public static void swap(int[] data, int i, int j) { pWWL{@ J
int temp = data; %4?SY82
data = data[j]; ZC3tbhV
data[j] = temp; ~5lKL5w
} a Q.Iq
} +P>Gy`D9