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。 naB`@
插入排序: 0ud>oh4WPR
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package org.rut.util.algorithm.support; OLM}en_L
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import org.rut.util.algorithm.SortUtil; /N82h`\n
/** 0I@Cx{$
* @author treeroot meNz0ve
* @since 2006-2-2 +zn207.`
* @version 1.0 @&M$oI$4*
*/ 0vm}[a4+i;
public class InsertSort implements SortUtil.Sort{ JqYt^,,Q:
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/* (non-Javadoc) f'3sT(1&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kw^tvRt'*
*/ [?Ub =sp
public void sort(int[] data) { j>t*k!db
int temp; -S %)2(f^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *<nfA}
} v\?J$Hdd
} Ffp<|2T2_
} z ''-AH,
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} GcYT<pwN6
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冒泡排序: Jf=$h20x
nzK"eNDN.
package org.rut.util.algorithm.support; 3?R QPP
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import org.rut.util.algorithm.SortUtil; wam-=3W
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/** -P3;7_}]:h
* @author treeroot ,dIo\Lm
* @since 2006-2-2 ]/{987
* @version 1.0 .}l&lj@#
*/ `2Oh0{x0*O
public class BubbleSort implements SortUtil.Sort{ @UidQX"b
N>}2&'I
/* (non-Javadoc) [5Dg%?x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #UpxF?A(
*/ kGX;x}q
public void sort(int[] data) { dECH/vJ^
int temp; HGjGV]N5
for(int i=0;i for(int j=data.length-1;j>i;j--){ :'LG%E:b
if(data[j] SortUtil.swap(data,j,j-1); =wy 3h0k^
} H\Jpw
} IN%04~=H
} `e!hT@Xxa
} w+0Ch1$
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} )4P5i
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选择排序: JrdH6Zg
)d|hIW]7(
package org.rut.util.algorithm.support; 1#3 Qa{i
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import org.rut.util.algorithm.SortUtil; \!tS|h
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/** mTW@E#)n
* @author treeroot Kc:}
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* @since 2006-2-2 %g>{m2o
* @version 1.0 pH1 9"=p<
*/ 20t</lq.
public class SelectionSort implements SortUtil.Sort { /:}z*a
@Sl!p)
/* t!Uc,mEV]
* (non-Javadoc) 9#;UQ.qA
* igW>C2J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3[jk}2R';p
*/ ^:RDu q
public void sort(int[] data) { >5jHgs#
int temp; [}OL@num
for (int i = 0; i < data.length; i++) { *ppb4R;CW
int lowIndex = i; a;A&>Ei}
for (int j = data.length - 1; j > i; j--) { D?w-uR%Y
if (data[j] < data[lowIndex]) { drQioH-
lowIndex = j; d[9NNm*htC
} ,A>i)brc
} /e5Fx
SortUtil.swap(data,i,lowIndex); jnoFNIW
} q$Ol"K@
} [i '\d}
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} 995^[c1o6
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Shell排序: y{eZrX|
e<p_u)m
package org.rut.util.algorithm.support; lE54RX}e4
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import org.rut.util.algorithm.SortUtil; o^Y'e+T"
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/** '7F`qL\/#(
* @author treeroot [)gvP'
* @since 2006-2-2 6wWA(![w"
* @version 1.0 k*4?fr
*/ o4kNDXP#S
public class ShellSort implements SortUtil.Sort{ m,u?
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/* (non-Javadoc) pg~`NN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } V4"-;P
*/ Pc]c8~
public void sort(int[] data) { Kg@9kJB
for(int i=data.length/2;i>2;i/=2){ n#N<zC/
for(int j=0;j insertSort(data,j,i); |jV4]7Luq
} dBG]J18
} <C4^Vem
insertSort(data,0,1); X/1Z9a+W
} <EI'N0~KG
w9}I*Nra
/** Y54*mn
* @param data rr4yJ;qpeP
* @param j p Nu13o~
* @param i %a/O7s 6
*/ 0zpP$q$
private void insertSort(int[] data, int start, int inc) { ,Z%!38gGsu
int temp; gzDb~UEoF
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9wKz p
} _<.R \rX&
} tazBZ'\c
} _>5BFQ_
gWS49*O
} zck)D^,aO
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快速排序: LM _4.J
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package org.rut.util.algorithm.support; YA^9, q6u?
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import org.rut.util.algorithm.SortUtil; :B- ,*@EU
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/** g{$&j*Q9
* @author treeroot W,agPG\+
* @since 2006-2-2 j7-#">YL
* @version 1.0 rI]:| k
*/ `T9<}&=!
public class QuickSort implements SortUtil.Sort{ ]Wa,a
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ena
/* (non-Javadoc) n?,fF(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bM^'q
*/ <6apv(2a
public void sort(int[] data) { g6W.Gl"5\w
quickSort(data,0,data.length-1); sCb?TyN'n
} m Xw1%w[*
private void quickSort(int[] data,int i,int j){ k5xirB_
int pivotIndex=(i+j)/2; n?
s4"N6
file://swap {8jG6
SortUtil.swap(data,pivotIndex,j); Q|G[9HBI
'`o+#\,b^%
int k=partition(data,i-1,j,data[j]); m@c2'*&Y
SortUtil.swap(data,k,j); w-nkf
M~
if((k-i)>1) quickSort(data,i,k-1); ^ O`
if((j-k)>1) quickSort(data,k+1,j); 9DtSYd/
E$G"R=
} G>_ZUHdI
/** &P{%C5?{
* @param data */8\Z46z
* @param i 50H [u|
* @param j mI`dZ3h
* @return ;5=pBP.
*/ <bTa88,)
private int partition(int[] data, int l, int r,int pivot) { Vr0RdO
do{ rWvJ{-%
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Tf0#+6 1>
SortUtil.swap(data,l,r); HRw,D=
} $9J"r9@@
while(l SortUtil.swap(data,l,r); Y0hL_46>
return l; H{GbOI.
} rz.`$b
N]=.I
} uPp(l4(+
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改进后的快速排序: OQsH,'
cALu
package org.rut.util.algorithm.support; RZ.5:v6
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import org.rut.util.algorithm.SortUtil; IaF79}^
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/** uuC/F_='B
* @author treeroot {jq-dL
* @since 2006-2-2 p' gv5\u[w
* @version 1.0 <n`|zQ
*/ "M*\,IH
public class ImprovedQuickSort implements SortUtil.Sort { '/p5tw8
l`u*,"$
private static int MAX_STACK_SIZE=4096; eeX)JC0A
private static int THRESHOLD=10; (p2a{v}fEz
/* (non-Javadoc)
w\QpQ~OX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [,e_2<
*/ <=`@`rm{
public void sort(int[] data) { F%|(pHk
int[] stack=new int[MAX_STACK_SIZE]; kR_[p._
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j
int top=-1; CRf^6k_;(
int pivot; {M$8V~8D
int pivotIndex,l,r; lubS{3<
7)]G"m{
stack[++top]=0; +*!!
stack[++top]=data.length-1; RcE%?2lD
P"#^i<ut@T
while(top>0){ Av[jFk
int j=stack[top--]; C^~iz
in
int i=stack[top--]; ':[y]ep(~|
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pivotIndex=(i+j)/2; X3>(K1
pivot=data[pivotIndex]; bC{~/ JP
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SortUtil.swap(data,pivotIndex,j); cP
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file://partition I[|I\tW
l=i-1; ["7}u^z@<+
r=j; <*\J 6:^n
do{ Tv KX8 m"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); aG ,uF
SortUtil.swap(data,l,r); &V;a:
} =os j}(
while(l SortUtil.swap(data,l,r); Z~R i%XG
SortUtil.swap(data,l,j); O//e0?]W
#-`lLI:w0
if((l-i)>THRESHOLD){ cZ(XY}
stack[++top]=i; "&ks83
stack[++top]=l-1; g=%&p?1@E
} v7R&9kU{
if((j-l)>THRESHOLD){ ^Ve^}|qPc
stack[++top]=l+1; (1o^Dn3
stack[++top]=j; <vrx8Q*6
} (AS%P?
8?$2;uGL
} v 3NaX.
file://new InsertSort().sort(data); /IC'R"V a
insertSort(data); Zry>s0
} :8ZxO wwv
/** Y `{U45
* @param data ^/+sl-6/F
*/ g[$B90
private void insertSort(int[] data) { x<l1s
int temp; }B5I#Af7
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )0Lq>6j9
} 2Ar<(v$
} f.= E. %
} (X9V-4
g DhwJks
} A"'MRYT`
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归并排序: "OPUGwf
=~h54/#[I
package org.rut.util.algorithm.support; ,jn?s^X6Dj
L`#+ZLo
import org.rut.util.algorithm.SortUtil; QJ>>&`{,
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/** =6sXZ"_Tw
* @author treeroot s:ruCS
* @since 2006-2-2 J-}NFWR;t
* @version 1.0 ~g{,W
*/ )=D&NO67Pq
public class MergeSort implements SortUtil.Sort{ _x!pMj(A
w# e'K-=
/* (non-Javadoc) [a3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Ka#6
*/ CytpL`&^]
public void sort(int[] data) { pR"qPSv'
int[] temp=new int[data.length]; "|.(yN
mergeSort(data,temp,0,data.length-1); Bag#An1
} #jX>FXo
@I&"P:E0F;
private void mergeSort(int[] data,int[] temp,int l,int r){ QP#Wfk(C
int mid=(l+r)/2; "7HB3?2>W
if(l==r) return ; "" U_|JH-
mergeSort(data,temp,l,mid); {9Y'v
mergeSort(data,temp,mid+1,r); fDd!Mt
for(int i=l;i<=r;i++){ <IVz mzpL
temp=data; yShHFlO=
} s{e(- 7'
int i1=l; U[b;#Y1X
int i2=mid+1; Db(_T8sU
for(int cur=l;cur<=r;cur++){ Nz*sD^SJa
if(i1==mid+1) au|^V^m
data[cur]=temp[i2++]; d|]O<]CG_
else if(i2>r) K;[%S
data[cur]=temp[i1++]; AxlFU~E4
else if(temp[i1] data[cur]=temp[i1++]; GYC&P]
else #OWs3$9
data[cur]=temp[i2++]; A[kH_{to;
} 1>w^ q`P
} = O1;vc}AA
8/"|VE DOr
} V=&,^qZ
abeSkWUL(
改进后的归并排序: DYlvxF`
T-C#xmY(
package org.rut.util.algorithm.support; toqzS!&.v
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import org.rut.util.algorithm.SortUtil; OZD!#YI
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/** {~fCqP.2
* @author treeroot Cc)P5\jh
* @since 2006-2-2 *O>aqu
* @version 1.0 UglG!1L
*/ A&c@8
public class ImprovedMergeSort implements SortUtil.Sort { ]^9*
t,{9
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private static final int THRESHOLD = 10; =`~Z@IbdI
]"Y%M'
/* kQVDC,d
* (non-Javadoc) ~9r!m5ws
* QaWHz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-Pqs
^g
*/ >}b6J7_
public void sort(int[] data) { IzdTXc
f
int[] temp=new int[data.length]; tRnW%F5
mergeSort(data,temp,0,data.length-1); {Y91vXTz7
} 6@q[tN7_^
4iNbK~5j
private void mergeSort(int[] data, int[] temp, int l, int r) { 99"[b
int i, j, k; hNnX-^J<o
int mid = (l + r) / 2; pP* ~ =?
if (l == r) rA1r#ksQ
return; u=;nU(]M '
if ((mid - l) >= THRESHOLD) !?o$-+a|
mergeSort(data, temp, l, mid); ^YR|WK Y
else kq~[k.
insertSort(data, l, mid - l + 1); 8ts+'65|F
if ((r - mid) > THRESHOLD) vA"niO
mergeSort(data, temp, mid + 1, r); }l(m5
else 5!F\h'E
insertSort(data, mid + 1, r - mid); ZBmXaP[9
i*CQor6|z
for (i = l; i <= mid; i++) { Tz[?gF.Do
temp = data; kAN;S<jSE
} eR-=<0Iw;
for (j = 1; j <= r - mid; j++) { b"M`@';+
temp[r - j + 1] = data[j + mid]; eh:}X}c=J]
} 4r[pMJiq
int a = temp[l]; :X1cA3c!
int b = temp[r]; t{SMSp
for (i = l, j = r, k = l; k <= r; k++) { Y^6[[vaj2
if (a < b) { hyb +#R
data[k] = temp[i++]; Q"|kW[Sg
a = temp; ("E!Jyc!
} else { ~sU?"V
data[k] = temp[j--]; l>D-Aan
b = temp[j]; E8-fW\!F
} l]Ui@X
} rjL?eTU"s
} ZP6x
'Z.OF5|eGT
/** K2xH'v
O (
* @param data :YqQlr\
* @param l 6!+X.+
* @param i ^+*GbY$'
*/ hB?,7-
private void insertSort(int[] data, int start, int len) { VJN/#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \ I^nx+l
} W ""*hJ
} O[IR|
} q*[!>\Z8
} 19F ;oFp
N )zPxQ
堆排序: U['JFLF
T2DF'f3A
package org.rut.util.algorithm.support; "[*S?QO(L
/WgPXE B
import org.rut.util.algorithm.SortUtil; =Y&9
qt
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/** BFMS*t`
* @author treeroot '7Mep
]
* @since 2006-2-2 t/KcXM
* @version 1.0 Ak5[PBbW
*/ d&[iEU
public class HeapSort implements SortUtil.Sort{ B;z;vrrL
O`i)?BC
/* (non-Javadoc) X!o[RJY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _BG8/"h32
*/ &so-O90
public void sort(int[] data) { -RG8<bI,
MaxHeap h=new MaxHeap(); P>*Fj4Z~
h.init(data); 5^i.;>(b
for(int i=0;i h.remove(); ,<@,gZru
System.arraycopy(h.queue,1,data,0,data.length); ]<27Sw&yaG
} 17>5#JLP
]?0{(\
private static class MaxHeap{ Nfv="t9e
K,f* SXM
void init(int[] data){ \G$QNUU
this.queue=new int[data.length+1]; @[MO,J&h
for(int i=0;i queue[++size]=data; (9mbF%b
fixUp(size); {I0w`xe
} ePp[m
zg6
} SU%mmwES3
#V.ZdLo(
private int size=0; PXw|
L
[ rQMD^:M$
private int[] queue; }#yU'#|d
C=N!z
public int get() { ^Xs%.`Gv/
return queue[1]; )|y#OZHR
} fyM3UA\U
5>k>L*5J
public void remove() { 7MY)\aH
SortUtil.swap(queue,1,size--); b,#`n
fixDown(1); 8y$5oD6g9
} m</]D WJ
file://fixdown }>2t&+v+
private void fixDown(int k) { gaQ[3g
int j; w{PUj
while ((j = k << 1) <= size) { 0 _Q*E3
if (j < size %26amp;%26amp; queue[j] j++; JXH",""bq
if (queue[k]>queue[j]) file://不用交换 glv ;C/l
break; ?4^};wDb2
SortUtil.swap(queue,j,k); jcE Msc
k = j; 'KH
lrmnr
} .iFViVZC
} ^6Yd}
private void fixUp(int k) { 6\NvG,8
while (k > 1) { -*?p F_*w
int j = k >> 1; /K7Bae5h
if (queue[j]>queue[k]) M~uMY+>
break; tKwn~T
SortUtil.swap(queue,j,k); J*5hf: ?i
k = j; 14mf}"z\
} >K\3*]>J3
} hjkLVL
dUIqD l
} 8qn 9|
OY: u',T
} >-b&v $
DKX/W+#a
SortUtil: Z a!
gbt
`19qq]
package org.rut.util.algorithm; U_]=E<el
B`i$Wt<7
import org.rut.util.algorithm.support.BubbleSort; j_p`Ng
import org.rut.util.algorithm.support.HeapSort; G~"z_ (
import org.rut.util.algorithm.support.ImprovedMergeSort; u$C\E<G^
import org.rut.util.algorithm.support.ImprovedQuickSort; h\(B#SN
import org.rut.util.algorithm.support.InsertSort; @Tm`d ?^
import org.rut.util.algorithm.support.MergeSort; }3Qc 24`
import org.rut.util.algorithm.support.QuickSort; @K\o4\
import org.rut.util.algorithm.support.SelectionSort; 1I ""X]I_
import org.rut.util.algorithm.support.ShellSort; "# !D|[h0
CphFv!k'Z
/** _ Hc%4I
* @author treeroot ;`DD}j`
* @since 2006-2-2 n+2%tW
* @version 1.0 vDsF-u1
*/ C8ZL*9U
public class SortUtil { SAR=
{/
public final static int INSERT = 1; k0JW[04j
public final static int BUBBLE = 2; S<"oUdkz
public final static int SELECTION = 3; {Ur7#h5
public final static int SHELL = 4; gljo;f:
public final static int QUICK = 5; w8p8 ;@
public final static int IMPROVED_QUICK = 6; GF*>~_Yr
public final static int MERGE = 7; @o6R[5(
public final static int IMPROVED_MERGE = 8; !scD|ti
public final static int HEAP = 9; t8P PE
:|rPT)yT]
public static void sort(int[] data) { +1QK}H~
sort(data, IMPROVED_QUICK); b?8)7.{F{
} KFU%DU G
private static String[] name={ /N6}*0Ru
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &kzj?xK=(j
}; vy[C'a
##cnFQCB
private static Sort[] impl=new Sort[]{ lNz]HiD
new InsertSort(), FH8k'Hxg
new BubbleSort(), /,2rjJ#b
new SelectionSort(), ;'0=T0\
new ShellSort(), D/CIA8h3
new QuickSort(), X%4Kj[I^
new ImprovedQuickSort(), [*Uu#9
new MergeSort(), ! \sMR
new ImprovedMergeSort(), wksl0:BL
new HeapSort() :QPf~\w?
}; .XS9,/S
?2 f_aY ;
public static String toString(int algorithm){ 0J9D"3T)
return name[algorithm-1]; \vRd}
} GSi>l,y'
$=)gpPT
public static void sort(int[] data, int algorithm) { Z.1>
kZ
impl[algorithm-1].sort(data); 6@V~0DG
} v7,$7@$:\
6~xBi(m`
public static interface Sort { Ls}7VKl'
public void sort(int[] data); 0
ipN8Pg+
} Hr^3`@}#1
g9~]s9
public static void swap(int[] data, int i, int j) { pDl3!m
int temp = data; D=+NxR[
data = data[j]; ,eRQu.
data[j] = temp; ]{GDS! )
} #+k*1Jg
} ~TqT}:,H