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。 dw7h@9\y
插入排序: 6<UI%X
EtcXzq>w
package org.rut.util.algorithm.support; v2mqM5Z
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import org.rut.util.algorithm.SortUtil; L/O:V^1
/** 1:"ZS ]i
* @author treeroot
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* @since 2006-2-2 4_\]zhS
* @version 1.0 vpk~,D07yR
*/ 1{wOjq(4
public class InsertSort implements SortUtil.Sort{ bvo
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/* (non-Javadoc) M]e _@:!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l,Ixz1S3e
*/ p*=9Ea:
public void sort(int[] data) { a#,lf9M
int temp; Js!Zk\O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pu!%sG jD
} ;'| t>'0_
} glWa? #1
} /A`Lyp#
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} \JZ'^P$Q
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冒泡排序: y#e<]5I
O[&G6+
package org.rut.util.algorithm.support; p2Fi(BW*q
71Mk!E=1
import org.rut.util.algorithm.SortUtil; 4buzx&
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/** _"[O=h:
* @author treeroot fkr;
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* @since 2006-2-2 <1E*wPm8
* @version 1.0 Gt?ckMB
*/ mg4:N
public class BubbleSort implements SortUtil.Sort{ zMN4cBL9m
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/* (non-Javadoc) )TgjaR9G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZlYb8+rW
*/ iI%"]- 0@1
public void sort(int[] data) { wB0ONH[
int temp; ed7Hz#Qc
for(int i=0;i for(int j=data.length-1;j>i;j--){ qL68/7:A
if(data[j] SortUtil.swap(data,j,j-1); tPho4,x$
} 9Dy/-%Ut9
} imf_@_
} XAc#ywophi
} gUxJ>~
[a1}r=6~
} YPsuG -is
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选择排序: Nv_"?er+y
<rF Y$
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package org.rut.util.algorithm.support; 2qUC@d<K
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import org.rut.util.algorithm.SortUtil; g\
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/** X2p9KC
* @author treeroot rgg3{bU/
* @since 2006-2-2 'm+)n08[
* @version 1.0 *1;}c
z
*/ [.`#N1-@M
public class SelectionSort implements SortUtil.Sort { nA^UF_rD-
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/* \)vxZ!
* (non-Javadoc) w`Js"_\
* 9:l>FoXS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QK%6Ncv
*/ <CUe"WbE)
public void sort(int[] data) { #x|h@(y|
int temp; NEh5
for (int i = 0; i < data.length; i++) { u4[3JI>
int lowIndex = i; i<nUp1r(
for (int j = data.length - 1; j > i; j--) { &U8W(NxN
if (data[j] < data[lowIndex]) { W.AN0N
lowIndex = j; g&"__~dS-F
} 38T2IN
} cB9`U4<
SortUtil.swap(data,i,lowIndex); YkLEK|d
} O)!MWmr
} Ym*Ed[S
u%=M4|7
} M&iA^Wrs
T!N,1"r
Shell排序: nAJ<@a
<w d+cPZQr
package org.rut.util.algorithm.support; kiFTx
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sX,oJIt
import org.rut.util.algorithm.SortUtil; QeVM9br)m
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/** v='h
* @author treeroot 4#m"t?6!
* @since 2006-2-2 vxzOG?Xc:
* @version 1.0 skn`Q>a
*/ 3yu{Q z5y,
public class ShellSort implements SortUtil.Sort{ S:GX!6>
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/* (non-Javadoc) =?f\o*J)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ',yY
*/ tc'`4O]c8
public void sort(int[] data) { L
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for(int i=data.length/2;i>2;i/=2){ rSVU|O3m;
for(int j=0;j insertSort(data,j,i); 9+\3E4K
} gs_nUgcA
} }*4K]3et$
insertSort(data,0,1); X,<n|zp
} \P_1@sH=
H}QOoXWkg
/** #eT{?_wM
* @param data 'o2x7~C@
* @param j Yl+r>+^
* @param i 6XO%l0dC.
*/ ?2;r#)
private void insertSort(int[] data, int start, int inc) { 3cNF^?\=
int temp; SPxgIP;IR
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AoEG%nT
} x62b=k}
} I"^ `!8<q
} m1X0stFRs"
?+S& `%?
} |:s4#3
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快速排序: mB.kV Ve0
+1H.5|
package org.rut.util.algorithm.support; >`a)gky%~
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import org.rut.util.algorithm.SortUtil; G l=dL<F
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/** h:3`e`J<h
* @author treeroot XX5 ):1
* @since 2006-2-2 N?H;fK4v
* @version 1.0 EnJAHgRV;e
*/ jZcjiOX
public class QuickSort implements SortUtil.Sort{ g_}r)CgG|
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/* (non-Javadoc) W
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cy)gN
g
*/ 93yJAao9
public void sort(int[] data) { +.Kmpw4
quickSort(data,0,data.length-1); %Ysu613mz
} +pJ;}+
private void quickSort(int[] data,int i,int j){ 9~DoF]TM
int pivotIndex=(i+j)/2; _gK@),de
file://swap )p>BN|L
SortUtil.swap(data,pivotIndex,j); 7'_zJI^
AG2iLictv
int k=partition(data,i-1,j,data[j]); MPMJkL$F^
SortUtil.swap(data,k,j); .9WJ/RKZ\D
if((k-i)>1) quickSort(data,i,k-1); UK2Y<\vD
if((j-k)>1) quickSort(data,k+1,j); x"~F=jT
DNdwMSwp
} C:g2E[#
/** P$Y<
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* @param data [6Uc?Bi
* @param i FS r`Y
* @param j ^9o;=!D!9
* @return K3&v6 #]
*/ VY$hg
private int partition(int[] data, int l, int r,int pivot) { ;8;nY6Ie
do{ g6$X {
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *plsZ*Q8
SortUtil.swap(data,l,r); BclZsU=xn
} E27wxMU
while(l SortUtil.swap(data,l,r); N\Byg jw|
return l; ehI*cf({
} Qw.""MLmN8
dRyK'Xr
} t<9oEjk["
X&h4A4#P
改进后的快速排序: w*r.QzCu,5
X~Uvh8O
package org.rut.util.algorithm.support; w-R>gdm
GwV2`2
import org.rut.util.algorithm.SortUtil; l}%!&V0
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/** EXg\a#4['
* @author treeroot s,N%sO;
* @since 2006-2-2 to^ &:
* @version 1.0 3@?#4]D{'
*/ Ob?>zsx
public class ImprovedQuickSort implements SortUtil.Sort { "[(_C&Ot4
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private static int MAX_STACK_SIZE=4096; zTBr<:
private static int THRESHOLD=10; <DiD8")4
/* (non-Javadoc) <wxI>T }b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @D-l_[
*/ &h-d\gMJ
public void sort(int[] data) { *'vX:n&t
int[] stack=new int[MAX_STACK_SIZE]; 7am ._K
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int top=-1; s2iR }<
int pivot; D,d mlv
int pivotIndex,l,r; s
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kg7oH.0E
stack[++top]=0; PkQu N;a
stack[++top]=data.length-1; s"p}>BjMIC
Gk*Mx6|N
while(top>0){ {QTfD~z^K
int j=stack[top--]; ^Qrdh0j
int i=stack[top--]; *nluK
x
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pivotIndex=(i+j)/2; eP|:b &
pivot=data[pivotIndex]; FD*`$.e3\
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SortUtil.swap(data,pivotIndex,j); MFaK=1
+?[TH?2c+
file://partition xaX3<V@S
l=i-1;
$.(%7[
r=j; }]N7CWy
do{ iDlIx8PI
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); QKYIBX
SortUtil.swap(data,l,r); V"*|`z)
} -7*,}xV
while(l SortUtil.swap(data,l,r); nZ hL
SortUtil.swap(data,l,j); GptJQ=pV
[#kfl
if((l-i)>THRESHOLD){ #QQ\xj
stack[++top]=i; BHOxwW{
stack[++top]=l-1; >5#`j+8=q
} Il%LI
if((j-l)>THRESHOLD){ NwoBM6 #
stack[++top]=l+1; ++F #Z(p
stack[++top]=j; 7m{ 'V`F
} gfw,S;
dY68wW>d|
} "3LOL/7f
file://new InsertSort().sort(data); Xz4!#,z/
insertSort(data); W*e6F?G
} ooreforr
/** U")~bU
* @param data N?U;G*G
*/ 4~hd{8
private void insertSort(int[] data) { D)8&v`LS
int temp; a9mLPP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I1BVqIt1i
} *L%HH@] %_
} F(^vD_G
} oqB(l[%z2
JGX E{FT
} $`.7XD}
DbP!wU lqR
归并排序: mEv<r6qDT
VmHok
package org.rut.util.algorithm.support; m,,-rC
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import org.rut.util.algorithm.SortUtil;
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/** b/5?)!I
* @author treeroot j1*'yvGM
* @since 2006-2-2 AcyiP
* @version 1.0 6A;V[3
*/ HsGXb\
public class MergeSort implements SortUtil.Sort{ HhhN8t
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/* (non-Javadoc) hU3c;6]3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L&MR%5
*/ WW\u}z.QJ
public void sort(int[] data) { =LDzZ:' X
int[] temp=new int[data.length]; @
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mergeSort(data,temp,0,data.length-1); G`9Ud
} *?Nrx=O*
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private void mergeSort(int[] data,int[] temp,int l,int r){ aB0L]i
int mid=(l+r)/2; w&hgJ
if(l==r) return ; VUxuX5B3M
mergeSort(data,temp,l,mid); ZZ?0%9
mergeSort(data,temp,mid+1,r); E?z3 D*U
for(int i=l;i<=r;i++){ [-_3Zr
temp=data; IP7j)SM!
} qc2j}D0
int i1=l; q,F\8M\$
int i2=mid+1; vm"LPwSk>
for(int cur=l;cur<=r;cur++){ c [sydl
if(i1==mid+1) UBzX%:A
data[cur]=temp[i2++]; Z,)4(#b =
else if(i2>r) ^=.R#zrc
data[cur]=temp[i1++]; \ ,ARYwd
else if(temp[i1] data[cur]=temp[i1++]; i#Io;
else m~'!
data[cur]=temp[i2++]; Yrs7F.Y"
} aY}:9qBice
} )=;GQ*<8Zs
Wf/r@/q
} f_Ma~'3
dKTyh:_{
改进后的归并排序: 3p6QJuSB
E;/WP!/.
package org.rut.util.algorithm.support; H?*EQK`7?0
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import org.rut.util.algorithm.SortUtil; B(7oHj.i2
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/** "3.v(GVr
* @author treeroot kd)Q$RA(
* @since 2006-2-2 >lQ@" U
* @version 1.0 c[J?`8
*/ gI "ZhYI
public class ImprovedMergeSort implements SortUtil.Sort { 4l7TrCB
bc=,$
private static final int THRESHOLD = 10; g5M=$y/H
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/* r*HbglB
* (non-Javadoc) #%N v\g;
* p4GhT~)l:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z^E>)!t
*/ #V&98 F
public void sort(int[] data) { 3.@"GS#"[
int[] temp=new int[data.length]; m0QE
S
mergeSort(data,temp,0,data.length-1); 6!zBLIYFI
} )12.W=p
q;Tdqv!Ju
private void mergeSort(int[] data, int[] temp, int l, int r) { WD#
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int i, j, k; + Ac.@!X}%
int mid = (l + r) / 2; ~k\Dde
if (l == r) }A jE- K{
return; vz5x{W
if ((mid - l) >= THRESHOLD) vF@hg)A
mergeSort(data, temp, l, mid); Wip@MGtJ
else E! d?@Xr@
insertSort(data, l, mid - l + 1); q\s"B.(G"
if ((r - mid) > THRESHOLD) 2 j.6
mergeSort(data, temp, mid + 1, r); :No`+X[Kq
else %jk7JDvl
insertSort(data, mid + 1, r - mid); ~hD!{([
n2}(Pt.
for (i = l; i <= mid; i++) { Z,zkm{9*
temp = data; }py)EI,U
} B-^r0/y;
for (j = 1; j <= r - mid; j++) { Zc 9@G-
temp[r - j + 1] = data[j + mid]; Ak3cE_*Y/
} %O6r
int a = temp[l]; ! yqez
int b = temp[r]; "Vh3hnS~
for (i = l, j = r, k = l; k <= r; k++) { \]C_ul'
if (a < b) { "uCO?hv0
data[k] = temp[i++]; -Vg(aD
a = temp; B@cC'F#G
} else { R!i\-C1 S
data[k] = temp[j--]; Hb}O/G$a*
b = temp[j]; fF6bEJl3
} /]j^a:#"6t
} !Gob `# r
} YP
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/** 4>^LEp
* @param data Zt_~Zxn3
* @param l lXtsnQOOK
* @param i :o~]FVf
*/ aVB/CoM9
private void insertSort(int[] data, int start, int len) { $ UNC0(4
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mtU{d^B
} {zX]41T
} Fn>KdoByN
} ^'9.VVyz
} w*?SGW
%xt;&HE
堆排序: Q,nJz*AJ
+3uPHpMB-
package org.rut.util.algorithm.support; T@wgWE<0y_
5{/uHscwLa
import org.rut.util.algorithm.SortUtil; Q
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ai%*s&0/Y
/** . ;rE4B
* @author treeroot 6am
g*=]
* @since 2006-2-2 _'8P8T&
* @version 1.0 J':X$>E|
*/ r[?GO"ej5
public class HeapSort implements SortUtil.Sort{ $RH.
GP>\3@>
/* (non-Javadoc) ;b{yu|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kEgpF{"%n
*/ clG@]<a`_
public void sort(int[] data) { 7|5X> yt
MaxHeap h=new MaxHeap(); Ii9[[I
h.init(data); Ff{,zfN+3
for(int i=0;i h.remove(); BLN|QaZ
System.arraycopy(h.queue,1,data,0,data.length); +m9ouF
} }!Y=SP1e
N5[^W`Qf
private static class MaxHeap{ HQvJ*U4++
pMHF u/|Pr
void init(int[] data){ z$gtGrU
this.queue=new int[data.length+1]; kmUL^vF
for(int i=0;i queue[++size]=data; l+#J oc<8
fixUp(size); 0iYo&q'n
} _01wRsm%2
} nb<e<>L
80zpRU"
private int size=0; #x qiGK
]_BH"ng}
private int[] queue; Q,K$)bM
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public int get() { O1D|T"@
return queue[1]; rFUR9O.{E
} G9^xv
vgE
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public void remove() { )I#{\^
SortUtil.swap(queue,1,size--); mC0_rN^Aj
fixDown(1); - "NK"nb
} #c!rx%8I
file://fixdown Lqdapx"Z_
private void fixDown(int k) { }DQTy.d;P
int j; qJ sH
while ((j = k << 1) <= size) { -Bl]RpHCe
if (j < size %26amp;%26amp; queue[j] j++; lA%FS]vh
if (queue[k]>queue[j]) file://不用交换 |
C^.[)
break; Jd^Lnp6?
SortUtil.swap(queue,j,k); T|8:_4/l
k = j; @@j:z;^|
} "OwK-
} ]5K+W
private void fixUp(int k) { s+~GQcj<T
while (k > 1) { )=#e*1!b
int j = k >> 1; Esu{c9,
if (queue[j]>queue[k]) j]FK.G'
break; "fr{:'HX
SortUtil.swap(queue,j,k); =z;]FauR!
k = j; RL:B.Lv/W
} O6/:J#X%
} ;yajt\a
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} DK
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iO&*WIbg
} #i.,+Q
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SortUtil: IU<lF) PF$
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package org.rut.util.algorithm; 8v z h5,U
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import org.rut.util.algorithm.support.BubbleSort; k 3H0$1
import org.rut.util.algorithm.support.HeapSort; d<+hQ\BF,
import org.rut.util.algorithm.support.ImprovedMergeSort; w
>2sr^!y
import org.rut.util.algorithm.support.ImprovedQuickSort; |.,]0CRg
import org.rut.util.algorithm.support.InsertSort; pHuR_U5*?
import org.rut.util.algorithm.support.MergeSort; ^B0Qk:%P^N
import org.rut.util.algorithm.support.QuickSort; t7l{^d_L
import org.rut.util.algorithm.support.SelectionSort; 5F+G8
import org.rut.util.algorithm.support.ShellSort; T60pw
jz`3xFy *]
/** 7Q]c=i cg
* @author treeroot `LNhamp
* @since 2006-2-2 "w$,`M?2
* @version 1.0 ]=VRct
"
*/ ^*i0~_
public class SortUtil { e'>q( B
public final static int INSERT = 1; :_y!p
public final static int BUBBLE = 2; N2k<W?wQ
public final static int SELECTION = 3; ^D5Jqh)
public final static int SHELL = 4; pmUf*u-
public final static int QUICK = 5; =Q{?!
public final static int IMPROVED_QUICK = 6; q\}+]|nGs
public final static int MERGE = 7; {g#4E0.A!
public final static int IMPROVED_MERGE = 8; H0#=oJr$)W
public final static int HEAP = 9; ]iGeqwT
;1[Z&Uv8
public static void sort(int[] data) { 3rB0H
sort(data, IMPROVED_QUICK); ,,BP}f+l$
} =/_u k{
private static String[] name={ l 9
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yhYF "~CM
}; ,[IDC3.4^R
FLs$
private static Sort[] impl=new Sort[]{ e*qGrg (E
new InsertSort(), M,S'4Szuk
new BubbleSort(), $%q=tn'EX
new SelectionSort(), nX 9]dz
new ShellSort(), (5 @H
new QuickSort(), ;xe.0j0h
new ImprovedQuickSort(), BO#tn{(#
new MergeSort(), c\2rKqFD8
new ImprovedMergeSort(), (T0MWp 0
new HeapSort() PBnH#zm
}; /ZD 6pF
2?GMKd)
public static String toString(int algorithm){
}mXYS|{
return name[algorithm-1]; GkX Se)#p
} ('SId@
Qw:!Rw,x
public static void sort(int[] data, int algorithm) { E0R6qS:'
impl[algorithm-1].sort(data); >>
"gb/x,
} \?>M?6D
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public static interface Sort { i4,p\rE0
public void sort(int[] data); BH1h2OEe#
} w^ut,`yWR
oR&z,%0wMK
public static void swap(int[] data, int i, int j) { sa4w.9O1GS
int temp = data; J6n>{iE
data = data[j]; T"[]'|'
data[j] = temp; $GFR7YC 7
} fE+zA)KX
} ;5bd<N