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。 z1!6%W_.
插入排序: 3[XQR8o
pAu72O?
package org.rut.util.algorithm.support; M-
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import org.rut.util.algorithm.SortUtil; &-1./?
/** K{l5m{:%
* @author treeroot S
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* @since 2006-2-2 cMzkL%
* @version 1.0 M/*NM= -a
*/ `E\imL
public class InsertSort implements SortUtil.Sort{ w^1Fi8+
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/* (non-Javadoc) = zl=SLe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?R5'#|EyX
*/ )n=ARDd^e
public void sort(int[] data) { ?_`0G/xl
int temp; 111D3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kHJ96G
} M"_FrIO
} jFerYv&K~
} )nu~9km3
<TNk?df7
} ^\:2}4Uj_
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冒泡排序: Z7jX9e"L
gNx+>h`AF
package org.rut.util.algorithm.support; uvA(Rn
_B,_4}
import org.rut.util.algorithm.SortUtil; [^~7]2 i
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/** Bfd-:`Jk
* @author treeroot j|e[s ?d
* @since 2006-2-2 X-B8MoG|
* @version 1.0 nB5Am^bP
*/ H0*5_OJ!i
public class BubbleSort implements SortUtil.Sort{ x"(9II*
CDp8)=WJFF
/* (non-Javadoc) ^t[HoFRa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +dkS/b
*/ k:#6^!b1
public void sort(int[] data) { l
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int temp; Gowp
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for(int i=0;i for(int j=data.length-1;j>i;j--){ PG,U6c #
if(data[j] SortUtil.swap(data,j,j-1); D{'#er
} &HM-g7|C0E
} 4%*hGh=
} v.W{x?5
} &14W vAU
v&3O&y/1v
} }iIbcA
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选择排序: g$j6n{Yl
)'q%2%Ak
package org.rut.util.algorithm.support; KIL18$3J
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import org.rut.util.algorithm.SortUtil; GLKO]y
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/** zL s^,x
* @author treeroot j.3o W
* @since 2006-2-2 ,2 WH/"
* @version 1.0 m%QqmTH
*/ |ia@,*KD
public class SelectionSort implements SortUtil.Sort { ykq'g|
iilyw_$H
/* ;Mj002.\G
* (non-Javadoc) yZSvn[f
* oTOfK}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6T^lS^
*/ v5T9Y-{`
public void sort(int[] data) { J-J3=JG
int temp; T{*^_
for (int i = 0; i < data.length; i++) { WfGH|u
int lowIndex = i; lv:U%+A
for (int j = data.length - 1; j > i; j--) { #Y[H8TW
if (data[j] < data[lowIndex]) { J"[3~&em
lowIndex = j; =8{*@>CX
} 8.I9}_
}
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SortUtil.swap(data,i,lowIndex); F>:%Cyo0!
} ID8k/t!
} B[NJ^b|
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} 2
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Shell排序: kqB\xlS7k
Ku3!*n_\
package org.rut.util.algorithm.support; Kj*m r%IaU
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import org.rut.util.algorithm.SortUtil; Rlw9$/D!Z
~4s-S3YzaM
/** v`{:~q*
* @author treeroot ;]&-MFv#
* @since 2006-2-2 j%M @#
* @version 1.0 L+Pc<U)T+
*/ o`%I{?UCDJ
public class ShellSort implements SortUtil.Sort{ MM_py!=>7
*d
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/* (non-Javadoc) I=YCQ VvA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "d?f:x3v^
*/ 7b.U!Ju
public void sort(int[] data) { |t\KsW
for(int i=data.length/2;i>2;i/=2){ e?)yb^7K
for(int j=0;j insertSort(data,j,i);
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} F7uhuqA]N
} +)-d_K.(k
insertSort(data,0,1); LrM}?9'
} Y}/jR6hK
< EXWWrm
/** ",ad7Y7i
* @param data yQS04Bl]
* @param j 5c~'!: 7
* @param i Ck(.N
*/ v,\93mNp[
private void insertSort(int[] data, int start, int inc) { ^"`Z1)V
int temp; (^S5Sc=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `9EVB;
} ,iOZ|
} 'aPCb`^;w
} wU0K3qZL
Ak|b0l>^
} &9h
n49s3|#)G
快速排序: f)tc 4iV
t/LgHb:)
package org.rut.util.algorithm.support; Fhi5LhWe+.
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import org.rut.util.algorithm.SortUtil; 7S2c|U4IM
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/** [Ye5Y?
* @author treeroot E<a.LW@
* @since 2006-2-2 (qk5f`O
* @version 1.0 F25<+1kr
*/ |
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public class QuickSort implements SortUtil.Sort{ i -V0Lm/
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/* (non-Javadoc) aZ/yCS7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *C/KM;&
*/ fSC.+,qk
public void sort(int[] data) { `g8tq
quickSort(data,0,data.length-1); </hR!Sb]
} O &\<F T5
private void quickSort(int[] data,int i,int j){ jQIV2TY[
int pivotIndex=(i+j)/2; [5pn@o
file://swap 4`G=q^GL,
SortUtil.swap(data,pivotIndex,j); L3>4t: 8
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int k=partition(data,i-1,j,data[j]); z{V8@q/
SortUtil.swap(data,k,j); T;%+ ]:w<
if((k-i)>1) quickSort(data,i,k-1); %rFllb7
if((j-k)>1) quickSort(data,k+1,j); E$&;]a
.)nCOwR6p
} HqDa2q4
/** (T2<!&0 @
* @param data 1Y2a*J
* @param i "
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* @param j 4=
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* @return tpz=}q
*/ ^X(_zinN"
private int partition(int[] data, int l, int r,int pivot) { C0f[eA
do{ TQ2i{e
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gTyW#verh$
SortUtil.swap(data,l,r); sK[Nti0
} (T;1q^j
while(l SortUtil.swap(data,l,r); ?bCTLt7k
return l; ]N_140N~
} ?xf~!D
aH9L|BN*
} )rS^F<C
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改进后的快速排序: B4 <_"0
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package org.rut.util.algorithm.support; ~CJYQFt
R=QM;
import org.rut.util.algorithm.SortUtil; H;X~<WN&AW
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/** p\)h",RkA
* @author treeroot @nW'(x(
* @since 2006-2-2 5Wj5IS/
* @version 1.0 }cyq'mi
*/ g;ct!f=U
public class ImprovedQuickSort implements SortUtil.Sort { gFgcxe6
H.f9d.<W%
private static int MAX_STACK_SIZE=4096; g')?J<z
private static int THRESHOLD=10; 1w6.
/* (non-Javadoc) 1gL8$.B?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vatx+)
*/ )/i4YLO
public void sort(int[] data) { FJ nG<5Rh
int[] stack=new int[MAX_STACK_SIZE]; MEDskvBG
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int top=-1; /}[zA@
int pivot; o(BYT9|.kw
int pivotIndex,l,r; p$&_fzb
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stack[++top]=0; ;9
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stack[++top]=data.length-1; Rf&^th}TH
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while(top>0){ N n:m+ZDo^
int j=stack[top--]; mT}Aje-L
int i=stack[top--]; Pm'.,?"
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pivotIndex=(i+j)/2; ]q@rGD85K
pivot=data[pivotIndex]; 7?)m(CFy
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SortUtil.swap(data,pivotIndex,j); if\k[O 1T6
&Qz"nCvJ
file://partition _dz:\v
l=i-1; ok8JnQC
r=j; (}~ 1{C@
do{ t^dakL
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &fh.w]\
SortUtil.swap(data,l,r); K1CMLX]m
} ^?JEyY
while(l SortUtil.swap(data,l,r); \=TWYj_Ah
SortUtil.swap(data,l,j); oo"JMD)
us(sZG
if((l-i)>THRESHOLD){ ke mr@_
stack[++top]=i; ZzSJm+&'
stack[++top]=l-1; `1DU b7<
} c|8KT
if((j-l)>THRESHOLD){ C%qtCk_cN
stack[++top]=l+1; ~0:$G?fz
stack[++top]=j; *NKC\aV`0
} =rE`ib
0`zm>fh}
} jCdZ}M($
file://new InsertSort().sort(data);
9QO!vx
insertSort(data); 1WZKQeOo
} mk$Yoz
/** \L&qfMjW"Z
* @param data ZfF`kD\
*/ ;L MEU_
private void insertSort(int[] data) { "dFdOb"O-
int temp; .T[!!z#^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u&Ie%@:h9R
} Vz+=ZK r5
} Q|zE@nLS
} C]{V%jU
5[0l08'D
} `3H?*\<(
_,Io(QS
归并排序: gb ^UFD L
!'c6 Hs
package org.rut.util.algorithm.support; %t(, *;
H znI R
import org.rut.util.algorithm.SortUtil; qugPs(uQ
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/** oC;l5v<
* @author treeroot ^[SbV^DOL
* @since 2006-2-2 X_EC:GU
* @version 1.0 =[43y%
*/ ahz@HX
public class MergeSort implements SortUtil.Sort{ "fX8xZdS
:ok!,QN
/* (non-Javadoc) Z\oAE<$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %K/G+
*/ bE%mgaOh
public void sort(int[] data) { I NFzX
int[] temp=new int[data.length]; V9);kD
mergeSort(data,temp,0,data.length-1); "J0Oa?
} B_6v'=7]
kKI!B`j=
private void mergeSort(int[] data,int[] temp,int l,int r){ 6='_+{
int mid=(l+r)/2; z;Gbqr?{{
if(l==r) return ; 7m@^=w
mergeSort(data,temp,l,mid); zrWq!F*-V\
mergeSort(data,temp,mid+1,r); K{7S
for(int i=l;i<=r;i++){ .LhbhUEfn
temp=data; "m\UqQGX
} lMI
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int i1=l; cC(ubUR
int i2=mid+1; B "s8i{Vm
for(int cur=l;cur<=r;cur++){ @[Jt~v
if(i1==mid+1) Xk7$?8r4&
data[cur]=temp[i2++]; 1&>nL`E[3
else if(i2>r) faKrSmE!
data[cur]=temp[i1++]; _mq*j^u,j
else if(temp[i1] data[cur]=temp[i1++]; jwtXI\@MS
else WhVmycdv
data[cur]=temp[i2++]; a)yNXn8E_
} OD2ai]!v+
} 1\7"I-
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/
} &oEq&
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改进后的归并排序: ?lw[
JSZj0_B
package org.rut.util.algorithm.support; 5FR#_}k]_F
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import org.rut.util.algorithm.SortUtil; igbb=@QBJ
p<nBS"/
/** .j4ziRa-
* @author treeroot ]j#$. $q
* @since 2006-2-2 Z
5YW L4s
* @version 1.0 8`*9jr
*/ %D6Wlf+^n
public class ImprovedMergeSort implements SortUtil.Sort { 9P>S[=
OL9C#er
private static final int THRESHOLD = 10; =$z$VbBv
s&_O2(l
/* wyhf:!-I
* (non-Javadoc) S2GBX1
* ?g*T3S"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u9^;~i,
*/ 4uVmhjT:X
public void sort(int[] data) { jW0z|jr
int[] temp=new int[data.length]; =}o>_+"
mergeSort(data,temp,0,data.length-1); XGl13@=O
} 8'\,&f`Y
J?ZVzKTb>}
private void mergeSort(int[] data, int[] temp, int l, int r) { Pds*M?&F
int i, j, k; 4qXUk:C@m
int mid = (l + r) / 2; 8ch~UBq/
if (l == r) 9: |K]y
return; $YQ&\[pDA
if ((mid - l) >= THRESHOLD) O]LuL&=s y
mergeSort(data, temp, l, mid); S<9d^= a
else l@F
e(^5E
insertSort(data, l, mid - l + 1); 78BuD[<X-
if ((r - mid) > THRESHOLD) 2o5<nGn
mergeSort(data, temp, mid + 1, r); ?4?jG3p
else Mz.&d:
insertSort(data, mid + 1, r - mid);
bQQ/7KM
>!p K94
for (i = l; i <= mid; i++) { &!~n=]*sz
temp = data; `.-k%2?/
} [hj'Yg 8{
for (j = 1; j <= r - mid; j++) { Bw7:ry
temp[r - j + 1] = data[j + mid]; @Lv_\^2/}
} @I.OT
int a = temp[l]; aJ_Eh(cF
int b = temp[r]; M<m64{m1
for (i = l, j = r, k = l; k <= r; k++) { F+9`G[
if (a < b) { [bVP2j
data[k] = temp[i++]; M!DoR6
a = temp; nhhJUN?8
} else { ?vNS!rY2&
data[k] = temp[j--]; 0A4|
b = temp[j]; ~{!!=@6
} M#2U'jy
} uM<+2S
} jCv+m7Z
&WU*cfJn)A
/** _1%^ibn
* @param data R~(.uV`#j
* @param l IHmNi>E&/
* @param i "?.Wb L
*/ g%P4$|C9i
private void insertSort(int[] data, int start, int len) { @Od u.F1e
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W>IKy#
} Ri0+nJ6
} *4VP5]!
} rz7b%WY
} 1T?%i
Wf w9cxGkf
堆排序: "G)?
E|
e(5R8ud
package org.rut.util.algorithm.support; Bq8<FZr#!
% 7:
import org.rut.util.algorithm.SortUtil; |
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/** ZSb+92g{L$
* @author treeroot !_#js
* @since 2006-2-2 ;9sVWJJCw
* @version 1.0 )pH{b]t
*/ >n\Q[W
public class HeapSort implements SortUtil.Sort{ TI&J>/z;$
u)MA#p {
/* (non-Javadoc) .lS6KBf@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0zNS;wvv&
*/ 4Lb<#e13R?
public void sort(int[] data) { >R-$JrU.=
MaxHeap h=new MaxHeap(); t!N>0]:mo
h.init(data); \hc9Rk
for(int i=0;i h.remove(); Wm_-T]#_
System.arraycopy(h.queue,1,data,0,data.length); ^O"`.2O1
} 2yc\A3ft#
4D$E
private static class MaxHeap{ Q+N @j]'
<(%uOo$
void init(int[] data){ :9qB{rLi}
this.queue=new int[data.length+1]; v1rGq
for(int i=0;i queue[++size]=data; k/Q]Ke
fixUp(size); >s~`K^zS
} h {btT
} PrxXL/6
0CYI,V
private int size=0; $OuA<-
$a1.c;NE'
private int[] queue; 4B(qVf&M
BpE[9N
public int get() { ?2c:|FD
return queue[1]; YJ`>&AJ
} |Dli6KN
LYv2ll`XP
public void remove() { kXRD_B5&
SortUtil.swap(queue,1,size--); *i90[3l
fixDown(1); ~C+T|
} #2iA-5
file://fixdown m0YDO0
private void fixDown(int k) { sS|5x
int j; $^F2
while ((j = k << 1) <= size) { SOJHw6
if (j < size %26amp;%26amp; queue[j] j++; L;<]wKs
if (queue[k]>queue[j]) file://不用交换 [rem,i+
break; =*N(8j>y
SortUtil.swap(queue,j,k); <#i'3TUR
k = j; F"I@=R-n
} sj2+|>
} r v>6k:(
private void fixUp(int k) { :PJjy6,1
while (k > 1) { Fx 2&ji6u
int j = k >> 1; 3f
x!\
if (queue[j]>queue[k]) 6A<aelE*i
break; ~C3-E %h@Z
SortUtil.swap(queue,j,k); K[Kc'6G
k = j; MI 3_<[
}
|H49FL
} &40dJ~SQ
i=rW{0c%
} bcg)K`'N
4}`MV .
} ?e*vvu33!
eyOAG4QTV
SortUtil: f}A^rWO
Px`yD3
package org.rut.util.algorithm; GfV9Ox
LE"xZxe
import org.rut.util.algorithm.support.BubbleSort; w@R-@
G
import org.rut.util.algorithm.support.HeapSort; W%x#ps5%
import org.rut.util.algorithm.support.ImprovedMergeSort; ZO}*^
import org.rut.util.algorithm.support.ImprovedQuickSort; 5NK:94&JE
import org.rut.util.algorithm.support.InsertSort; z
Ey&%Ok
import org.rut.util.algorithm.support.MergeSort; 9i@*\Ada
import org.rut.util.algorithm.support.QuickSort; |tkmO:
import org.rut.util.algorithm.support.SelectionSort; ,;g:qe3D$
import org.rut.util.algorithm.support.ShellSort; l\)Q3.w
a+d|9y/k
/** Uz6B\-(0p
* @author treeroot ]|oqJ2P
* @since 2006-2-2 u Wtp2]A
* @version 1.0 C" {j0X`
*/ u]"RAH
public class SortUtil { n=~?BxB
public final static int INSERT = 1; l}{O
public final static int BUBBLE = 2; ]d0Dd")n
public final static int SELECTION = 3; N|; cG[W
public final static int SHELL = 4; r iz({
public final static int QUICK = 5; IdM;N
public final static int IMPROVED_QUICK = 6; ZWv$K0agu
public final static int MERGE = 7; 1=>$c
public final static int IMPROVED_MERGE = 8; UA^E^$f:
public final static int HEAP = 9; ?hO*~w;UU|
E^s>S,U[y
public static void sort(int[] data) { b/)UN*~
sort(data, IMPROVED_QUICK); *Z(qk`e.b
} ^gy(~u
private static String[] name={ fw5AZvE6$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s<{c?4T
}; &,+ZNA`P
)+J?(&6
private static Sort[] impl=new Sort[]{ mcvTz, ;=
new InsertSort(), 6%? NNEM
new BubbleSort(), Nt)9-\T
new SelectionSort(), D6D*RTi4
new ShellSort(), a v/=x
new QuickSort(), ie)Qsw@
new ImprovedQuickSort(), 1FuChd
new MergeSort(), hd900LA}
new ImprovedMergeSort(), p"ZPv~("V
new HeapSort() {.ph)8
}; DwI)?a_+
6*%lnd+_
public static String toString(int algorithm){ qsLsyi |zG
return name[algorithm-1]; WH!<Z=#c}
} DZvpt%q
dg-pwWqN
public static void sort(int[] data, int algorithm) { zx^)Qb/EL6
impl[algorithm-1].sort(data); IQ\`n|
} {Su]P {oJ
$iV3>>;eh
public static interface Sort { jRGG5w}
public void sort(int[] data); 'Mg%G(3
} )K}b,X`($
cWm.']
public static void swap(int[] data, int i, int j) { ]uP{Sj
int temp = data; R1U\ /
data = data[j]; iS{)Tll}&
data[j] = temp; H_x35|"
} bF3j* bpO"
} uzsR*x%s-