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。 %e|UA-(
插入排序: Xr88I^F;
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package org.rut.util.algorithm.support; 1Oak8 \G
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import org.rut.util.algorithm.SortUtil; dX[Xe
/** ;4Xx5*E
* @author treeroot r/HG{XH`
* @since 2006-2-2 Ea0EG>Y
* @version 1.0 y$6EEp
*/ Y/pK
public class InsertSort implements SortUtil.Sort{ 1YU?+K
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/* (non-Javadoc) #'RfwldD9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )M(//jX
*/ #BZ5Mxzj
public void sort(int[] data) { G(t&(t`[
int temp; .SSPJY(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HL:w*8a
} V!e*J,g
} #$!^1yO
} _)4zm
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} 7; ?7q
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冒泡排序: RK)ikLgp
u9]M3>
package org.rut.util.algorithm.support; %+UTs'I
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import org.rut.util.algorithm.SortUtil; Lw?>1rTT/
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/** &._Mh
* @author treeroot Z uP3/d
* @since 2006-2-2 <xH!
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* @version 1.0 s9fEx-!y
*/ v`:!$U*
H=
public class BubbleSort implements SortUtil.Sort{ ;$qc@)Uwp
AU9:Gu@M/
/* (non-Javadoc) [d>2F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H$
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*/ !thFayq
public void sort(int[] data) { Z0wH%o\
int temp; U2\k7I
for(int i=0;i for(int j=data.length-1;j>i;j--){ H;Gs0Qi;
if(data[j] SortUtil.swap(data,j,j-1); Lu[Hz8
} Lg2PP#r
} WW7E*kc
} &hZ6CV{
} "39mhX2
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} 4e?c W&
VwarU(*
选择排序: |t#s h
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package org.rut.util.algorithm.support; Z hCjY
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import org.rut.util.algorithm.SortUtil; '}F9f?
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/** ^lK!tOeO
* @author treeroot UyF;sw
* @since 2006-2-2 p-7?S^!l
* @version 1.0 x'%vL",%
*/ X6?Gxf,
public class SelectionSort implements SortUtil.Sort { yDpv+6(a
i9peQ61{
/* a<((\c_8G
* (non-Javadoc) ]a:T]x6'
* a^VI)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v)*eLX$
*/ a"k,x-EL(
public void sort(int[] data) { !8RJHMX&
int temp; =~dsIG
for (int i = 0; i < data.length; i++) { e
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int lowIndex = i; G2:.8ok
for (int j = data.length - 1; j > i; j--) { vQDR;T"]
if (data[j] < data[lowIndex]) { c5[~2e
lowIndex = j; R F;u1vEQ8
} E
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} :`4LV
SortUtil.swap(data,i,lowIndex); 5yroi@KT
} $u)#-X;x
} |Y2n6gkH[
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} ItAC=/(d
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Shell排序: V:AA{<
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package org.rut.util.algorithm.support; ]Rmu+N|
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import org.rut.util.algorithm.SortUtil; 1O90 ]c0
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/** }F3}"Ik'L
* @author treeroot 9HlM0qE5b
* @since 2006-2-2 M IU B]
* @version 1.0 ;;EFiaA
*/ B{V(g"dM
public class ShellSort implements SortUtil.Sort{ %XXjQ5p
aZta%3`)
/* (non-Javadoc) a6/E TQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LM!@LQAMY
*/ !VvM
public void sort(int[] data) { L|A1bxt
for(int i=data.length/2;i>2;i/=2){ K-@cn*6
for(int j=0;j insertSort(data,j,i); MLmv+
} F@ZB6~T~.
} ^4{{ +G)j
insertSort(data,0,1); 5ai$W`6
} +^4HCyW
W9A F}
/** >R\!Qk
* @param data 6%&w\<(SG
* @param j Z>W&vDeuN
* @param i z7Z!wIzJ
*/ pWb8X}M
private void insertSort(int[] data, int start, int inc) { }7qboUG e
int temp; \F7NuG:m,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xp"F)6
} H.[(`wi!I
} pJQ_G`E
} df$pT?o
\T;(k?28HN
} 01+TVWKX
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快速排序: qp/nWGj
P_
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package org.rut.util.algorithm.support; #5^S@}e
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import org.rut.util.algorithm.SortUtil; hWr}Uui
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/** t&G #%
* @author treeroot 1kh()IrA
* @since 2006-2-2 ^pocbmg
* @version 1.0 OX.g~M
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*/ ?"p.Gy)
public class QuickSort implements SortUtil.Sort{ 74KR.ABd
Z%VgAV>>
/* (non-Javadoc) s>ZlW:jY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XeAH.i<
*/ rX|{nb
public void sort(int[] data) { W!a'KI'
quickSort(data,0,data.length-1);
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} B)&z% +
private void quickSort(int[] data,int i,int j){ &LhR0A
int pivotIndex=(i+j)/2; ,{#L i
file://swap -.UUa
SortUtil.swap(data,pivotIndex,j); H$xUOqL
=K9-
int k=partition(data,i-1,j,data[j]); S$nEflcz
SortUtil.swap(data,k,j); -qB{TA-.\
if((k-i)>1) quickSort(data,i,k-1); W)u9VbPk[
if((j-k)>1) quickSort(data,k+1,j); 3MHByT%
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} ER<Z!*2
/** twql)lbx
* @param data qB3=wFI
* @param i @P<Mc)o^
* @param j &t74T"(d
* @return q&: t$tSS
*/ !f#[4Xw
private int partition(int[] data, int l, int r,int pivot) { (KphAA8
do{ *Di ;Gf@
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dca?(B!'6
SortUtil.swap(data,l,r); ,)t/1oQ}>^
} %r:Uff@
while(l SortUtil.swap(data,l,r); ^:o^g'Yab
return l; DA/\[w?J
} ujbJ&p
ZJ|&t
} C*Dco{
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改进后的快速排序: oBWa\N
cb _nlG!
package org.rut.util.algorithm.support; IjRUL/\=
W%K=N-kE_
import org.rut.util.algorithm.SortUtil; ?qczMck_
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/** j 4eq.{$
* @author treeroot \l/<[ZZ
* @since 2006-2-2 UphZRgT!N
* @version 1.0 ":01M},RA
*/ Yr 1k\q
public class ImprovedQuickSort implements SortUtil.Sort { 3xpygx9
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private static int MAX_STACK_SIZE=4096; Vpf7~2[q%
private static int THRESHOLD=10; mUwGr_)wj
/* (non-Javadoc) X%Ta?(9|.^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !]!J"!xg*
*/ Qy|6A@
public void sort(int[] data) { u S{WeL6%
int[] stack=new int[MAX_STACK_SIZE]; OBZ:C!
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int top=-1; 4 _Idf
int pivot; 6Zq7O\
int pivotIndex,l,r; V%n7h&\%
~|=G3(I[
stack[++top]=0; .\|}5J9W
stack[++top]=data.length-1; {tF)%>\#
e&F=w`F\
while(top>0){ >Gr,!yP
int j=stack[top--]; RVa{%
int i=stack[top--]; h2ou ]
+ :k"{I
pivotIndex=(i+j)/2; cK1RmL"3
pivot=data[pivotIndex]; cAzlkh
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SortUtil.swap(data,pivotIndex,j); m7,;Hr(
<l^#FH
file://partition ZNY),3?
l=i-1; 4XArpKA
r=j; u$y5?n|
do{ 8fQaMn4V
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p(S {k]ZL@
SortUtil.swap(data,l,r); ci{WyIh
} Ip;;@o&D
while(l SortUtil.swap(data,l,r); "$N 4S9U
SortUtil.swap(data,l,j); =}YaV@g<f
&,iPI2`O A
if((l-i)>THRESHOLD){ EL1*@
stack[++top]=i; k3r<']S^
stack[++top]=l-1; (:ij'Zbz
} qJEtB;J'
if((j-l)>THRESHOLD){ ~DUOL~E
stack[++top]=l+1; `Bv, :i
stack[++top]=j; ^97\TmzP{
} l =^ ^l`
U7d05y'
} 2B=+p83<
file://new InsertSort().sort(data); {#}?-X
insertSort(data); S)G*+)
} <+e&E9;>6
/** -5Ln3\ O@
* @param data 7B#HF?,?
*/ ,L^ag&!4
private void insertSort(int[] data) { d0N/!;
int temp; rZG6}<Hx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qwHP8GU
} [35>T3Ku
} A<[X@o}92
} /3CdP'c
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} Ky6 d{|H
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归并排序: F=~LVaF/_
g9:V00^<
package org.rut.util.algorithm.support; .0#{?R,
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import org.rut.util.algorithm.SortUtil; bDM;7fFp$
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/** Ln&CB!u
* @author treeroot #F6!x3Z
* @since 2006-2-2 (c1Kg
* @version 1.0 I8{ohFFo
*/ |NXe{q7{
public class MergeSort implements SortUtil.Sort{ a3[lZPQe
$h8,QPy
/* (non-Javadoc) 8WMGuv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ue"e><c6:
*/ vB1nj<]&z
public void sort(int[] data) { xY1@Ja
int[] temp=new int[data.length]; _gI1@uQw
mergeSort(data,temp,0,data.length-1); 3B[u2o>
} ;$rh&ET
%3 VToj@`>
private void mergeSort(int[] data,int[] temp,int l,int r){ )dZ1$MC[
int mid=(l+r)/2; 3C(V<R?
if(l==r) return ; }} wZ
mergeSort(data,temp,l,mid); R'x^Y"
mergeSort(data,temp,mid+1,r); -)Y[t Z^*`
for(int i=l;i<=r;i++){ Dh B*k<S
temp=data; H(F9&6}
} &=hkB9
;
int i1=l; uw9w{3]0f
int i2=mid+1; <l"rn M%
for(int cur=l;cur<=r;cur++){ $z'_Hr'
if(i1==mid+1) :,Ad1(
data[cur]=temp[i2++]; VfJdCg_
else if(i2>r) 9:]|TIPi
data[cur]=temp[i1++]; FpFkZFtG'm
else if(temp[i1] data[cur]=temp[i1++]; Ej/P:nB
else *K2fp=Ns
data[cur]=temp[i2++]; Bu,VLIba
} qBXIR}
} yc3i> w`
8VR!
Y0`e
} hR%2[lBn!]
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+
改进后的归并排序: )SsO,E+t=U
#FsoK*F
package org.rut.util.algorithm.support; LQ.0"6oj
b?%Pa\,!
import org.rut.util.algorithm.SortUtil; T96M=?wh!
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/** B5H=#
* @author treeroot :`20i*
* @since 2006-2-2 wBIhpiJX0
* @version 1.0 SbN.z
*/ E _j=v
\
public class ImprovedMergeSort implements SortUtil.Sort { D|E,9|=v
W``
-/
private static final int THRESHOLD = 10; OZi4S3k
K:8.
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/* <Z\j#p:
* (non-Javadoc) B*T;DE
* XI58Cy*!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g,d'&r"JWt
*/ b{hdEb
public void sort(int[] data) { wQw
y+S
int[] temp=new int[data.length]; 6V6,m4e
mergeSort(data,temp,0,data.length-1); Q"b62+03
} |!.VpN&
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private void mergeSort(int[] data, int[] temp, int l, int r) { v.Zr,Z=eV
int i, j, k; [-'LJG Wb<
int mid = (l + r) / 2; ^9A,j}>o-
if (l == r) V"R ,omh
return; j<C p&}X
if ((mid - l) >= THRESHOLD) Sx}61 ?
mergeSort(data, temp, l, mid); 40R7@Vaf
else 71!'k>]h
insertSort(data, l, mid - l + 1); 7)37AK w
if ((r - mid) > THRESHOLD) S7WT`2
mergeSort(data, temp, mid + 1, r); ,G!mO,DX
else u<K{=94!e
insertSort(data, mid + 1, r - mid); h\PybSW4s
rv;is=#1
for (i = l; i <= mid; i++) { 8u4Fag Q,
temp = data; lko
k2
} njg\y
for (j = 1; j <= r - mid; j++) { M"|({+9eG
temp[r - j + 1] = data[j + mid]; nZ8f}R!f:
} ZIikDih1
int a = temp[l]; A,#a?O6m
int b = temp[r]; ;}E$>]*Yn
for (i = l, j = r, k = l; k <= r; k++) { UJhUb)}^
if (a < b) { 'NDDj0Y
data[k] = temp[i++]; 31=vUS
a = temp; _&|<(m&."
} else { u$V8fus0
data[k] = temp[j--]; m
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b = temp[j]; N4[^!}4
} `}|$eF&
} `as6IMqJD
} kli)6R<
4]mAV\1
/** <n{-&;>
* @param data ;LE9w^>^V
* @param l >}'WL($5U
* @param i W@FRKDixG
*/ ~Op~~
m
private void insertSort(int[] data, int start, int len) { `g!NFp9q
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Tmr%r'i3
} >^ijj`{d
} hz*H,E!>
}
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j_
} 8bI;xjK^Q
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堆排序: w~l%xiC
@]xHt&j
package org.rut.util.algorithm.support; drK &
,R2;oF_
import org.rut.util.algorithm.SortUtil; Lc5I?}:;L
[ %:%C]4
/** XL!^tMk
* @author treeroot rw]7Lr_>
* @since 2006-2-2 Z2^B.r#
* @version 1.0 `=JGlN7
*/ 6UnWtLE
public class HeapSort implements SortUtil.Sort{ O(CmdSk,
a?P$8NLr
/* (non-Javadoc) j=5hW.fI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r"\g6<RP
*/ XVWVY}
public void sort(int[] data) { UTph(U#
MaxHeap h=new MaxHeap(); YMD&U
h.init(data); atmTI`i
for(int i=0;i h.remove(); To@77.'
System.arraycopy(h.queue,1,data,0,data.length); 6BIr{SY
} =%ZR0cWPoI
9G=HG={
private static class MaxHeap{ CWW|?
b5.L== >
void init(int[] data){ 85 <%L:EC
this.queue=new int[data.length+1]; /Ym!%11`
for(int i=0;i queue[++size]=data; >P[BwL]
fixUp(size); :1,xs e
} wS}Rl}#Oh?
} TU}./b@F
8PtX@s43\
private int size=0; BFH=cs
]#t5e>o|
private int[] queue; p4M7BK:nf
0D:e P``
public int get() { L qdzqq
return queue[1]; Sxg&73;ZV
} hsZ}FLStJ
qS}pv
public void remove() { )3A%Un#B
SortUtil.swap(queue,1,size--); -VP da @@w
fixDown(1); Z&j?@k,k
} |VE*_ G
file://fixdown CyEEE2cV
private void fixDown(int k) { TATH,Sz:x
int j; FErKr)
while ((j = k << 1) <= size) { AB")aX2%E
if (j < size %26amp;%26amp; queue[j] j++; (3fU2{sm
if (queue[k]>queue[j]) file://不用交换 9G"-~C"e3
break; z1`z
k0
SortUtil.swap(queue,j,k); )*I%rN8b
k = j; f+W8Gszi
} ruTj#tWSo
} C8bv%9
private void fixUp(int k) { W9%B9~\G;+
while (k > 1) { (D
<o=Q
int j = k >> 1; fS?fNtD6<
if (queue[j]>queue[k]) Od@<L
break; vB;$AFh{
SortUtil.swap(queue,j,k); }}MZgm~U)
k = j; ct-;L' a
} ("-`Y'"K
} 6kM'f}t[C
%eDJ]\*^X
} PP_fTacX
?2$0aq
}
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KuohUH+
SortUtil: .,7ZDO9{
U)y~{E~c34
package org.rut.util.algorithm; [V _?`M
JHIXTy__
import org.rut.util.algorithm.support.BubbleSort; 3PU'd^
import org.rut.util.algorithm.support.HeapSort; U**v'%{s
import org.rut.util.algorithm.support.ImprovedMergeSort; 4C[n@p2
import org.rut.util.algorithm.support.ImprovedQuickSort; hDc)\vzr
import org.rut.util.algorithm.support.InsertSort; [tY+P7j9)
import org.rut.util.algorithm.support.MergeSort; Yvbk[Rb
import org.rut.util.algorithm.support.QuickSort; [5O`
import org.rut.util.algorithm.support.SelectionSort; k>;a5'S
import org.rut.util.algorithm.support.ShellSort; z3>oUq{
%zA$+eT
/** y.m;4((
* @author treeroot S+Vsy(
* @since 2006-2-2 Yiy|^j
* @version 1.0 sg!*%*XQ
*/ LJII7<k
public class SortUtil { |`i.8
public final static int INSERT = 1; SP
|R4*KY
public final static int BUBBLE = 2; wM#BQe3t#
public final static int SELECTION = 3; X=d;WT4,,
public final static int SHELL = 4; <<:a>)6\
public final static int QUICK = 5; #ZS8}X*S
public final static int IMPROVED_QUICK = 6; TSCc=c
public final static int MERGE = 7; u{"@
4
public final static int IMPROVED_MERGE = 8; rGxX]
public final static int HEAP = 9; >W[#-jA_Z
sB>ZN3ptH^
public static void sort(int[] data) { YMEI
J}
sort(data, IMPROVED_QUICK); ,H+LE$=
} Z6XP ..
private static String[] name={ ^&-H"jF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ZFsJeF'"
}; A7X-),D
|~I-
private static Sort[] impl=new Sort[]{ A}cGag+sp
new InsertSort(), |L"!^Y#=D
new BubbleSort(), byUz
new SelectionSort(), qn4jy6
new ShellSort(), <dA1n:3o
new QuickSort(), 7/$s!pV
new ImprovedQuickSort(), A"8"e*
new MergeSort(), rt7]~W-
new ImprovedMergeSort(), d3| oKP6
new HeapSort() r=3knCEWK
}; @JL+xfz
I N'a5&..
public static String toString(int algorithm){ J}vxK
H#=
return name[algorithm-1]; =P.m5e<
} {Z=m5Dy}
Cw_XLMY%V1
public static void sort(int[] data, int algorithm) { (~<9\ZJs
impl[algorithm-1].sort(data); 6W abw:
} E-_Q3^
/kY|PY
public static interface Sort { @^';[P!
public void sort(int[] data); 5V{zdS=
} /Xds+V^Z
SdTJ?P+m
public static void swap(int[] data, int i, int j) { s
s*% 3<
int temp = data; l[EjtN
data = data[j]; MXj7Z3
data[j] = temp; AqzPwO^
} }`,}e 259
} oIP<7gz