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。 .aOnGp
插入排序: Y(VJbm`
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package org.rut.util.algorithm.support; vEe NW
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import org.rut.util.algorithm.SortUtil; k,Qskd-N]
/** :c[n\)U[aa
* @author treeroot uwIc963
* @since 2006-2-2 uYG^Pc^v
* @version 1.0 WP**a Bp
*/ Q/>L_S
public class InsertSort implements SortUtil.Sort{ 2GmpCy`L"
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/* (non-Javadoc) ?dZt[vAMn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 t
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*/ ;,'igdold
public void sort(int[] data) { oS,I~}\kQ
int temp; NVV}6TUV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); AN:@fZ
} Pi2|
} ;!@EixN-YH
} =ziwxIo6
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} zW |=2oX2
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冒泡排序: E
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4A`NJ
package org.rut.util.algorithm.support; -|yb[~3
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import org.rut.util.algorithm.SortUtil; HG>j5
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/** 4b]a&_-}
* @author treeroot %~|HFYd
* @since 2006-2-2 "%2xR[NF
* @version 1.0 SU _SU".
*/ ~q0*"\Ff
public class BubbleSort implements SortUtil.Sort{ `Kl`VP=c
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/* (non-Javadoc) c8 K3.&P6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [p r"ZQ]
*/ Y]`.InG@
public void sort(int[] data) { 6qvp*35Cx
int temp; E9!N>0
for(int i=0;i for(int j=data.length-1;j>i;j--){ s=I'e/"7
if(data[j] SortUtil.swap(data,j,j-1); s$h]
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} 6X
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} }*U[>Z-eO
} {[Q0qi =
} @{
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} uUR~&8ERX
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选择排序: %%%fL;-y
uv{P,]lK
package org.rut.util.algorithm.support; Jc4L5*Xn/
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import org.rut.util.algorithm.SortUtil; or ;f&![w
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/** rPzQ8<
* @author treeroot >"X\>M`"
* @since 2006-2-2 0Rxe~n1o
* @version 1.0 H/F+X?t$0
*/ q]&.#&h
public class SelectionSort implements SortUtil.Sort { ]ekk }0
3*_fzP<R
/* A^fjfa);V
* (non-Javadoc) =V+I=rqo
* Mc sTe|X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -7>)i
*/ ("7M
b{
public void sort(int[] data) { *mG`_9
int temp; Z5G!ct:W
for (int i = 0; i < data.length; i++) { (3vHY`9
int lowIndex = i; &7?R+ZGo
for (int j = data.length - 1; j > i; j--) { DsD zkwJE
if (data[j] < data[lowIndex]) { y k161\
lowIndex = j; 0CvsvUN@
} z T%U!jqI
} yTM{|D]$(
SortUtil.swap(data,i,lowIndex); L7Dh(y=;7
} .?C%1a&_l
} #>;FUZuJr
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} "T/>d%O1b
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Shell排序: 8am`6;O:!
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package org.rut.util.algorithm.support; ^u)z{.z'H/
9e!NOl\_;.
import org.rut.util.algorithm.SortUtil; 5@osnf?
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/** [ANuBNF
* @author treeroot 46jh-4)<
* @since 2006-2-2 RH)EB<PV
* @version 1.0 s3s4OAY
*/ hi=XYC,
public class ShellSort implements SortUtil.Sort{ ;_kzcK!l
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/* (non-Javadoc) _=6 rE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +WJ(QZEhD
*/ H Yr}wG
public void sort(int[] data) { UO`;&e-DB
for(int i=data.length/2;i>2;i/=2){ ajhEL?%D
for(int j=0;j insertSort(data,j,i); z:Sigo_z[
} H2gj=krK
} QA!_} N4n
insertSort(data,0,1); s,VXc/
} |8_JY2
R
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/** %bXx!x8(
* @param data ]6Ug>>x5
* @param j zkM"cb13q/
* @param i .uo.N
*/ C=Fzu&N}
private void insertSort(int[] data, int start, int inc) { |C \}P
int temp; 4fV3Ear=j
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $
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} U09.Y
} q=HHNjj8
} +H/jK @
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} 4S0>-?{
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快速排序: ge3sU5iZ
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package org.rut.util.algorithm.support; f}c\_}(
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import org.rut.util.algorithm.SortUtil; HY;o^drd
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/** bZ_mYyBh
* @author treeroot <<A`aU^fX
* @since 2006-2-2 Wx'Kp+9'
* @version 1.0 +eX)48
*/ S&C1 TC
public class QuickSort implements SortUtil.Sort{ X8eJ4%
A?Q a 4i
/* (non-Javadoc) 3q[WHwmm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W|k0R4K]]
*/ ajl
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public void sort(int[] data) { ChryJRuwv5
quickSort(data,0,data.length-1); hlZ@Dq%f
} UAF<m1
private void quickSort(int[] data,int i,int j){ $$Vt7"F
int pivotIndex=(i+j)/2; _;A $C(
file://swap ~Aad9yyi
SortUtil.swap(data,pivotIndex,j); _STB$cZ
[//R ~i?
int k=partition(data,i-1,j,data[j]); V+-$jOh
SortUtil.swap(data,k,j); C8N{l:1f]
if((k-i)>1) quickSort(data,i,k-1); uNbH\qd=
if((j-k)>1) quickSort(data,k+1,j); gQSNU_o Z
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} #BK 9 k>i
/** xynw8;Y,
* @param data 0XwHP{XaO
* @param i jt~Qu-
* @param j 5pNY)>]t=
* @return '+'CbWgY
*/ <<9Va.
private int partition(int[] data, int l, int r,int pivot) { !
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do{ I[MgIr^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h 6G/O`:
SortUtil.swap(data,l,r); >>[/UFC)n
} ln*icaDqf
while(l SortUtil.swap(data,l,r); ~sQjl]
return l; O/%< }3Sq
} fqz28aHh
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} e)nimq
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改进后的快速排序: +,+vkpL-%
WE}kTq
package org.rut.util.algorithm.support; Hs"(@eDV&J
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import org.rut.util.algorithm.SortUtil; 5 v^yQ<70
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/** h)lPi
* @author treeroot b/$km?R
* @since 2006-2-2 :vx$vZb
* @version 1.0 6Q4X6U:WB
*/ IJOvnZ("A
public class ImprovedQuickSort implements SortUtil.Sort { rn@`yTw^
U;_[b"SW%
private static int MAX_STACK_SIZE=4096; 4Ph0:^i_
private static int THRESHOLD=10; vP%tk s+.
/* (non-Javadoc) ~jU/<~s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ Mj>}zbpk/
public void sort(int[] data) { "}WJd$
int[] stack=new int[MAX_STACK_SIZE]; o 6 {\Zzp
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int top=-1; F+UG'4%
int pivot; W^,S6!
int pivotIndex,l,r; }*]B-\>
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stack[++top]=0; )/ Ud^wi
stack[++top]=data.length-1; rr`;W}3
=*BIB5
while(top>0){ {
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int j=stack[top--]; rjt8fN
int i=stack[top--]; ;?fS(Vz~
.@)mxC:\K9
pivotIndex=(i+j)/2; lA!"z~03*
pivot=data[pivotIndex]; *F^wtH`
9L0GLmLk1u
SortUtil.swap(data,pivotIndex,j); 4rK{-jvh>m
D(W,yq~7uY
file://partition `Ycf]2.,$
l=i-1; R9We/FhOY
r=j; p1pQU={<
do{ u*S=[dq
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qIUfPA=/_
SortUtil.swap(data,l,r); %A1@&xrbl
} R;whW:Tx
while(l SortUtil.swap(data,l,r); ))D:8l@
SortUtil.swap(data,l,j); .D,p@4
g]@(E
if((l-i)>THRESHOLD){ iO/XhSD
stack[++top]=i; |LG4=j.l
stack[++top]=l-1; <>xJn{f0c
} &adI (s~
if((j-l)>THRESHOLD){ V!%jf:k
stack[++top]=l+1; IH48|sa
stack[++top]=j; ~\p]~qQ\K
} ] H~4
v dbO(
} .9*wY0:
file://new InsertSort().sort(data); wZT%Ee\D%
insertSort(data); 8kE]_t
} ;DA8B'^>
/** e<7.y#L
* @param data YG:3Fhx0~
*/ M$4k;
private void insertSort(int[] data) { e"]8T},
int temp; W/z7"#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x_=n-lAF
} k NqS8R|
} Z 2}ah
} Ft=zzoVKg
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} zepop19
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归并排序: |@?%Ct
!?f5>Bl
package org.rut.util.algorithm.support; _EnwME{@
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import org.rut.util.algorithm.SortUtil; r0t^g9K0
pA.J@,>`}
/** H~eRT1
* @author treeroot !IU.a90V
* @since 2006-2-2 o56`
* @version 1.0 Wc3kO'J
*/ H>Q%"|
public class MergeSort implements SortUtil.Sort{ r?m+.fJB
^L1L=c;,
/* (non-Javadoc) D.D$#O_n.S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WH ?}~u9
*/ 'ckQg=zPR
public void sort(int[] data) { ,y4I[[
int[] temp=new int[data.length]; ZN"j%E{d
mergeSort(data,temp,0,data.length-1); LZPuDf~/
} f-6vLX\Vu
waX>0e
private void mergeSort(int[] data,int[] temp,int l,int r){ AL/?,%F
int mid=(l+r)/2; .iCDXc{#
if(l==r) return ; GWsE;
mergeSort(data,temp,l,mid); rqv))Zo`
mergeSort(data,temp,mid+1,r); {l_{T4xToB
for(int i=l;i<=r;i++){ NW~z&8L
temp=data; c,so`I3rI
} u$%t)2+$4
int i1=l; U<XSj#&8|
int i2=mid+1; *vgl*k?)
for(int cur=l;cur<=r;cur++){ R(.}C)q3
if(i1==mid+1) +[\eFj|=
data[cur]=temp[i2++]; 9[!,c`pw
else if(i2>r) u&G.4QQF
data[cur]=temp[i1++]; (>J4^``x=
else if(temp[i1] data[cur]=temp[i1++]; $VAx:Y|
else jR=s#Xz
data[cur]=temp[i2++]; >56>*BHD
} x@mL $
} f)]%.>
GdB.4s^
} _'4A|-9
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改进后的归并排序: wB'zuPAK6
6nhMP$h
package org.rut.util.algorithm.support; U$oduY#
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import org.rut.util.algorithm.SortUtil; %B.D^]S1:
nEzf.[+9/
/** mw_Ew]&
* @author treeroot *5bLe'^\|K
* @since 2006-2-2 Y_`- 9'&
* @version 1.0 <Q|d&vDVfV
*/ 5J8r8` t
public class ImprovedMergeSort implements SortUtil.Sort { '`'GK&)
=b;>?dP
private static final int THRESHOLD = 10; IH$0)g;s
y@CHR
/* B?VhIP e
* (non-Javadoc) sLE#q+W
* 2r$#m*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IwGqf.!.>
*/ NM)k/?fA
public void sort(int[] data) { **69rN
int[] temp=new int[data.length]; {M,,npl
mergeSort(data,temp,0,data.length-1); </uOe.l>Q
} !lo/xQ<
.^J2.>.
private void mergeSort(int[] data, int[] temp, int l, int r) { MX>[^}n
int i, j, k; `1 :{0p2q
int mid = (l + r) / 2; *<1r3!
if (l == r) @aJ!PV'ms
return; EpQ8a[<-3
if ((mid - l) >= THRESHOLD) `3p~m,
mergeSort(data, temp, l, mid); c8Z wr]DF
else vb9OonE2
insertSort(data, l, mid - l + 1); E2)h?cs
if ((r - mid) > THRESHOLD) x8GJY~:SW
mergeSort(data, temp, mid + 1, r); -OSa>-bzNx
else !8`3GX:B_
insertSort(data, mid + 1, r - mid); SkU9ON
0M\D[mg
for (i = l; i <= mid; i++) { j,]Y$B
temp = data; RK w$- 7O
} UGK*G y
for (j = 1; j <= r - mid; j++) { %`Z!4L
temp[r - j + 1] = data[j + mid]; NnVnUgx
} (sWLhUgRX
int a = temp[l]; @{Gncy|
int b = temp[r]; #c^^=Z
for (i = l, j = r, k = l; k <= r; k++) { YBh'EL}P
if (a < b) { r'gOVi4t1*
data[k] = temp[i++]; {v3P9s(
a = temp; yDNOt C|
} else { 1}~(Yj@f%
data[k] = temp[j--]; 4Qn$9D+?
b = temp[j]; K98i[,rP
} YKQr,
Now
} uwlr9nB
} iiK]l
Sna4wkbS
/** }1IpON
* @param data `({T]@]V
* @param l LdJYE;k Ju
* @param i ! VjFW5'{
*/ Sp@-p9#
private void insertSort(int[] data, int start, int len) { V59(Z
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); kQ]$%Lk[
} ,@5I:X!rR
} v+99
-.
} F2X0%te
} m.,U:>
I!^O)4QRx
堆排序: fFQ|T:vm
p,"g+ MwP
package org.rut.util.algorithm.support; 6AocmR0D'
4`,j =3
import org.rut.util.algorithm.SortUtil; Dc)dE2
s.8{5jVG
/** :6%Z]tt
* @author treeroot B7imV@<
* @since 2006-2-2 s&j-\bOic9
* @version 1.0 =hl }.p
*/ v$^Z6>vVI
public class HeapSort implements SortUtil.Sort{ NO :a;
rx}r~0i
/* (non-Javadoc) GgKEP,O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )p*}e8L
*/ ;| 1$Q!4
public void sort(int[] data) { <tioJG{OT
MaxHeap h=new MaxHeap();
O#I1V K
h.init(data); Sfdu`MQR
for(int i=0;i h.remove(); *g^x*|f6
System.arraycopy(h.queue,1,data,0,data.length); ,i@X'<;y
} +@r*}
<F04GO\
private static class MaxHeap{ "jw<V,,
T1H"\+
void init(int[] data){ OrK&RC
this.queue=new int[data.length+1]; P9 Z}H(?C
for(int i=0;i queue[++size]=data; )2M>3C6>f
fixUp(size); ~y7jCcd`
} W5R\Q,x6
} K<>sOWZ'S
@e{^`\ l=<
private int size=0; =G]@+e
Dih3}X&jn$
private int[] queue; {AQ=<RDRF
#Qkroji
qw
public int get() { fum0>tff
return queue[1];
Tgl}
} A<ynIs<
G$sA`<<
public void remove() { 71l%MH
SortUtil.swap(queue,1,size--); !kC*g
fixDown(1); 4ni3kmvX
} k?7 X3/O
file://fixdown )rixMl &[
private void fixDown(int k) { edPUG
N
int j; IY*EA4>
while ((j = k << 1) <= size) { B-r0"MX&
if (j < size %26amp;%26amp; queue[j] j++; M>/Zbnq
if (queue[k]>queue[j]) file://不用交换 aCL!]4K84$
break; &y#r;L<9
SortUtil.swap(queue,j,k); VJS8)oI~
k = j; +$Rt+S BD
} )(@Hd
} 7hcNf,
private void fixUp(int k) { e#k<d-sf6
while (k > 1) { dh $bfAb
int j = k >> 1; h?pkE
if (queue[j]>queue[k]) D:K4H+ch
break; nWHa.H#
SortUtil.swap(queue,j,k); =lpQnj"
k = j; @K!&qw
} !Ta>U^7
} ?C/Te)
JwXT%op9RP
} `[n("7,
%$DI^yS
} =yy5D$\
9`9R!=NM
SortUtil: h*<P$t
CJ++?hB]X
package org.rut.util.algorithm; 28=O03q
=J~ x
import org.rut.util.algorithm.support.BubbleSort; &>Vfa
import org.rut.util.algorithm.support.HeapSort; &e8s65`
import org.rut.util.algorithm.support.ImprovedMergeSort; t N2Md}@e
import org.rut.util.algorithm.support.ImprovedQuickSort; wT{nu[=GH*
import org.rut.util.algorithm.support.InsertSort; R,Vd.-5M
import org.rut.util.algorithm.support.MergeSort; /Js7`r=Rx
import org.rut.util.algorithm.support.QuickSort; CH<E,Z
C1T
import org.rut.util.algorithm.support.SelectionSort; b?'yAXk
import org.rut.util.algorithm.support.ShellSort; +j4"!:N}B
'f?$"U JF
/** { .?/)
* @author treeroot h3;bxq!q
* @since 2006-2-2 RG4 sQ0
* @version 1.0 /7YF mI/0
*/ YSe.t_K2C
public class SortUtil { 9tqF8pb7v
public final static int INSERT = 1; PV=5UyjW
public final static int BUBBLE = 2; Gmz6$^D
public final static int SELECTION = 3; ?pzaG{
public final static int SHELL = 4; 5;{H&O9Q
public final static int QUICK = 5; @n": w2^B
public final static int IMPROVED_QUICK = 6; "T- `$'9
public final static int MERGE = 7; EEW_gFn
public final static int IMPROVED_MERGE = 8; jNC4_q&
public final static int HEAP = 9; eD#hpl
0xXC^jx:
public static void sort(int[] data) { ;I!MLI
sort(data, IMPROVED_QUICK); jXMyPNTK
} xagBORg+Bd
private static String[] name={ Dmu/RD5X:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *~x/=.}
}; 0/oyf]HR
9,"L^W8"k
private static Sort[] impl=new Sort[]{ Kc^;vT>3
new InsertSort(), LoGVwRmoC
new BubbleSort(), Y(cGk#0
new SelectionSort(), W}]%X4<#rN
new ShellSort(), aT$9;
new QuickSort(), Xqm::1(-(
new ImprovedQuickSort(), .>IhN 5
new MergeSort(), MHC^8VL
new ImprovedMergeSort(), wg]j+r@
new HeapSort() yYH 0v7vx+
}; |x-S&-
Mwr"~?\\
public static String toString(int algorithm){ ,9o"43D:a|
return name[algorithm-1]; dB5b@9*
} >#y^;/bb
bAm(8nT7w
public static void sort(int[] data, int algorithm) { EB8\_]6XJ
impl[algorithm-1].sort(data); : 7`[$<~E
} h|"9LU4a
Bb"Bg\le,^
public static interface Sort { [ra_ 2R
public void sort(int[] data); G-.^O,%
} A,LuD.8
i?F
>+
public static void swap(int[] data, int i, int j) { 2j[&=R/.
int temp = data; DY?Kfvef
data = data[j]; Z7?~S2{c
data[j] = temp; 6 jn3`D
} LmnymcH
} & J2M1z%