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。 )r`F}_CEL
插入排序: {+N7o7
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package org.rut.util.algorithm.support; )d =8)9B
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import org.rut.util.algorithm.SortUtil; D"vl$BX
/** <ZXK}5SZ#
* @author treeroot TJ`Jqnh
* @since 2006-2-2 {~0r3N4Zl
* @version 1.0 ":Uv
u[-
*/ L
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public class InsertSort implements SortUtil.Sort{ D6NgdE7b
#bZT&YE^
/* (non-Javadoc) bL9XQ:$C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4RDdfY\%u
*/ U:+wt}-T"
public void sort(int[] data) { EL gq#z
int temp; ~^ ^|]s3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pu `;B
} ^,sKj-
} '(-SuaH49
} )W0z
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} S
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冒泡排序: --BS/L-
C/{%f,rU
package org.rut.util.algorithm.support; oRZ--1oR_
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import org.rut.util.algorithm.SortUtil; rI;84=v2&9
%7[Z/U=
/** d'UCPg<Y
* @author treeroot Cj3C%W
* @since 2006-2-2 >sl#2,br
* @version 1.0
.{-C*
*/ N^@aO&+A
public class BubbleSort implements SortUtil.Sort{ j3_vh<U\
/{sFrEMP\
/* (non-Javadoc) WcZck{ehd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o >?#$~XNv
*/ eUZvJTE
public void sort(int[] data) { Z+M* z;
int temp; N799@:.
for(int i=0;i for(int j=data.length-1;j>i;j--){ $^ZugD
if(data[j] SortUtil.swap(data,j,j-1); 9yWQ}h
} >j}.~$6dj_
} _I
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} gzd)7np B2
} W"&Y7("y
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} vq;_x
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选择排序: $*N)\>~X
IWs)n1D*]
package org.rut.util.algorithm.support; ;Q8LA",5d
e>~7RN
import org.rut.util.algorithm.SortUtil; Puodsd
@p$$BUb
/** uYy&<_r
* @author treeroot nAY'1!O i
* @since 2006-2-2 O$,bNu/g
* @version 1.0 rJws#^]
*/ (sN;B)
public class SelectionSort implements SortUtil.Sort { 'rSP@
JV_V2L1Ut
/* 0.kQqy~5
* (non-Javadoc) i-E/#zni
* FAbl5VW'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :W*']8 M-
*/ R0DWjN$j
public void sort(int[] data) { _=ziw|zI
int temp; w\(;>e@
for (int i = 0; i < data.length; i++) { $CP_oEb
int lowIndex = i; ,HHCgN
for (int j = data.length - 1; j > i; j--) { KXvBJA$
if (data[j] < data[lowIndex]) { u~\I
lowIndex = j; s$PPJJT{b
} XPd@>2
} r.#"he_6!.
SortUtil.swap(data,i,lowIndex); \95O
} Qs1e0LwA9
} lq*{2M{[
/M@6r<2`i
} 3V)NM%Aw
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Shell排序: \Zbi`;m?
{ZR>`'^:
package org.rut.util.algorithm.support; hsE Q6
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import org.rut.util.algorithm.SortUtil; =*Ru2
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/** c$AwJhl^]
* @author treeroot 3Sh#7"K3
* @since 2006-2-2 aZBb@~Y
* @version 1.0 4b<>gpQ
*/ R^ &nBwp
public class ShellSort implements SortUtil.Sort{ f zsD
'BmLR{[2L
/* (non-Javadoc) 29~Bu5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .^aqzA=]
*/ u{d\3-]/
public void sort(int[] data) { N "Mw1R4
for(int i=data.length/2;i>2;i/=2){ T]0H&Oov
for(int j=0;j insertSort(data,j,i); A$;"9F@
} F!pgec%]'
} *!-J"h
insertSort(data,0,1); 9W+RUh^W
} F* h\ #?
9?L,DThQ
/** KVA~|j B
* @param data AttS?TZr
* @param j &m8Z3+Ea
* @param i Dg~L"
*/ Z@d(0 z
private void insertSort(int[] data, int start, int inc) { [44C`x[8M+
int temp; V9cKl[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =}^J6+TVL
} 4ht+u
}
RI</T3%~
} +q-/~G'
{j!+\neL
} qrxn%#\XP
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快速排序: n,vs(ZL:
?X5Y8n]y\h
package org.rut.util.algorithm.support; uFl19
b<1+q{0r
import org.rut.util.algorithm.SortUtil; 6l,oL'$}P1
%UnL,V9)
/** N_^s;Qj
* @author treeroot n)xLEx,
* @since 2006-2-2 p81Vt
* @version 1.0 eGr;P aG
*/ x-%4-)
public class QuickSort implements SortUtil.Sort{ TOC2[mc'
~&\} qz3
/* (non-Javadoc) /CfgxPo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U2TR>0l
*/ VsR8|Hn$
public void sort(int[] data) { L^><APlX
quickSort(data,0,data.length-1); I2G:jMPy
} 4t e QG
private void quickSort(int[] data,int i,int j){ bWEti}kW
int pivotIndex=(i+j)/2; e|2@z-Sp-
file://swap RP|/rd]-k
SortUtil.swap(data,pivotIndex,j); \#O}K
io{\+%;b~
int k=partition(data,i-1,j,data[j]); [:*Jn}
SortUtil.swap(data,k,j); 8AgKK=C=
if((k-i)>1) quickSort(data,i,k-1); 6xq/
if((j-k)>1) quickSort(data,k+1,j); jSc!"Trl]
vWpoaz/w
} e$=UA%
/** *s1^s;LR
* @param data BfUM+RC%5
* @param i .m/$ku{/J
* @param j `j)S7KN
* @return L$rMfeS
*/ jS<(Oo
private int partition(int[] data, int l, int r,int pivot) { %f'mW2
do{ E=eK(t(8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); noL&>G
SortUtil.swap(data,l,r); pN?geF~t|
} ]~!?(d!J/
while(l SortUtil.swap(data,l,r); Al-;-t#Dc
return l; PT/TQW
} s.]<r5v7
$vjl-1x&
} SSo7
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改进后的快速排序: _`- trE.
,C97|6rC
package org.rut.util.algorithm.support; Md[M}d8
jqv"8S5
import org.rut.util.algorithm.SortUtil; CaE1h9
b;k3B7<
/** R.'-jvO
* @author treeroot h}$g}f%$+
* @since 2006-2-2 4Fs5@@>X
* @version 1.0 RM|2PG1m
*/ 2uZ4$_
public class ImprovedQuickSort implements SortUtil.Sort { R q
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{Uj-x
-
private static int MAX_STACK_SIZE=4096; )F,IPAA#
private static int THRESHOLD=10; L5j%4BlK/
/* (non-Javadoc) p()#+Xy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AS?
ESDC
*/ 'JK"3m}nT
public void sort(int[] data) { ]9]o*{_+(f
int[] stack=new int[MAX_STACK_SIZE]; X"Ca
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int top=-1; 3[F9qDAy
int pivot; Vl\8*!OL%
int pivotIndex,l,r; M%(^GdI#Vf
Z`]r)z%f
stack[++top]=0; ms%RNxU4:
stack[++top]=data.length-1; tPqWe2
UYw=i4J'
while(top>0){ '
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int j=stack[top--]; ='G-wX&k
int i=stack[top--]; JG/Pc1aK
"&Rt&S
pivotIndex=(i+j)/2; 0(|Yy/Yq
pivot=data[pivotIndex]; rHaj~s 4
@^cR
SortUtil.swap(data,pivotIndex,j); ?DrA@;IB
oT0TbZu%
file://partition Cno+rmsfT
l=i-1; SPN5H;{[]K
r=j;
kJ[r.)HU
do{ @
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }5]2tH${
SortUtil.swap(data,l,r); uEui{_2$
} AC&)FY
while(l SortUtil.swap(data,l,r); %iR"eEE
SortUtil.swap(data,l,j); fK{m7?V
^gSZzJ5
if((l-i)>THRESHOLD){ $+
stack[++top]=i; N> jQe
stack[++top]=l-1; C116c"
} Q5xQ5Le
if((j-l)>THRESHOLD){ Ek6z[G`
O
stack[++top]=l+1; z; Jz^m-
stack[++top]=j; 9y+0Zj+.
} G nPrwDB
m"/ o4
} Ygq;jX
file://new InsertSort().sort(data); s
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insertSort(data); lx\9 Y 8
} q5xF~SQGw2
/** LE}V{%)xD
* @param data ko{7^]gR
*/ U[EZ,7n8
private void insertSort(int[] data) { 6m%#cP
(6K
int temp; YN}vAFR`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |}><)}
} Zk ] /m
} :i9=Wj
} !rsGCw!Pg
pv]2"|]V)
} 'W*:9wah
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归并排序: J!\oH%FJp
pf$gvL
package org.rut.util.algorithm.support; B",;z)(%
z_8lf_N
import org.rut.util.algorithm.SortUtil; rU9z? (
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/** LU $=j
* @author treeroot b.j$Gna>Q
* @since 2006-2-2 alH6~
* @version 1.0 }0V aZ<j
*/ 4w5);x.
public class MergeSort implements SortUtil.Sort{ #w@V!o
FDal;T
/* (non-Javadoc) Ggk#>O G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `0, G'F
*/ =}g-N)^
public void sort(int[] data) { mg]t)+ PQ
int[] temp=new int[data.length]; FrC)2wX
mergeSort(data,temp,0,data.length-1); `gAW5 i-z5
} oy-y QYX
,@kLH"a0
private void mergeSort(int[] data,int[] temp,int l,int r){ > JC"YB
int mid=(l+r)/2; l;d4Le
if(l==r) return ; hVIv->
mergeSort(data,temp,l,mid); =m;,?("7t3
mergeSort(data,temp,mid+1,r); *#9?9SYSk
for(int i=l;i<=r;i++){ [Ob09#B%:5
temp=data; ^r~O*
} =P%?{7
int i1=l; ;pj,U!{%s\
int i2=mid+1; GTM@9^
for(int cur=l;cur<=r;cur++){ 0`V;;w8
if(i1==mid+1) xzHb+1+p
data[cur]=temp[i2++]; )FN\jo!!.
else if(i2>r) z HT#bP:o
data[cur]=temp[i1++]; 2<9&OL
else if(temp[i1] data[cur]=temp[i1++]; Z!-V&H.
else lK_T%1Gz
data[cur]=temp[i2++]; y*
:C~
} U@9v(TfV
} 3rBID
<JIqkGeAi
} $R%tD.d3
D-FT3Culw
改进后的归并排序: {53|X=D64
`S+n,,l
package org.rut.util.algorithm.support; iJH?Z,Tjf
(mplo|>
import org.rut.util.algorithm.SortUtil; ~O~iP8T
:{
iK 5
/** zZ,"HY=jN
* @author treeroot _Q 'f^Kj
* @since 2006-2-2 0avtfQ +f
* @version 1.0 zs6rd83#
*/ PeIKx$$Kl{
public class ImprovedMergeSort implements SortUtil.Sort { IrUoAQ2xpG
ZUD{V
private static final int THRESHOLD = 10; fA"c9(>m%]
7K ~)7U
/* Hy5 6@jW+E
* (non-Javadoc) 6L rI,d
* *R}p9;dpO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 31\mF\{V
*/ Z;S)GUG^
public void sort(int[] data) { G5%k.IRz
int[] temp=new int[data.length]; _0BQnzC=
mergeSort(data,temp,0,data.length-1); jn`5{ ]D
} #"8'y
z%BX^b$Hj
private void mergeSort(int[] data, int[] temp, int l, int r) { EeHghq
int i, j, k; Cn0s?3Fm
int mid = (l + r) / 2; HQ wrb HS
if (l == r)
`n@;%*6/
return; hXvC>ie(i
if ((mid - l) >= THRESHOLD) ;66{S'*[
mergeSort(data, temp, l, mid); m#ig.z|A
else [)?9|yY"`
insertSort(data, l, mid - l + 1); e,Z[Nox
if ((r - mid) > THRESHOLD) zJ$U5r/u
mergeSort(data, temp, mid + 1, r); <,Pl31g^
else l[i1,4
insertSort(data, mid + 1, r - mid); [+8*}03
_DAqL@5n
for (i = l; i <= mid; i++) { &*bpEdkZ
temp = data; v_WF.sb~
} 8H1&=)M=
for (j = 1; j <= r - mid; j++) { ~!M"
temp[r - j + 1] = data[j + mid]; );h
} XD"
4t4~>
int a = temp[l]; "&{.g1i9
int b = temp[r]; 6J_$dzw
for (i = l, j = r, k = l; k <= r; k++) { ZuZCIqN
if (a < b) { D^a(|L3;
data[k] = temp[i++]; p"7[heExw
a = temp; HYG1BfEaW
} else { bc:3 5.
data[k] = temp[j--]; /EJy?TON*
b = temp[j]; ]q"y P0
} wz{c;v\J^
} *CbV/j"P?
} r i)`e
Ms5R7<O.7
/** _2)QL
* @param data ?o`:V|<v
* @param l \%9QE
* @param i +=d=
*/ ]omBq<ox'Y
private void insertSort(int[] data, int start, int len) { 'vYt_T
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !]5V{3
} fQwLx
} \/C5L:|p_
} wCV~9JTJ!
} u?rX:KkS
bvHQ #:}H
堆排序: bR1Q77<G\
7F_N{avr
package org.rut.util.algorithm.support; kZ]pV=\Y*
ur7S
K(#
import org.rut.util.algorithm.SortUtil; (Q&O'ng1
@6%7X7m
/** }$sTnea
* @author treeroot mi7~(V>
* @since 2006-2-2 KfYT
* @version 1.0 v T
@25
*/ W`P>vK@=
public class HeapSort implements SortUtil.Sort{ :."6 g)T
I[?bM-
/* (non-Javadoc) sl(go^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uHRxV"@}[1
*/ "c?31$6
public void sort(int[] data) { xn@oNKD0
MaxHeap h=new MaxHeap(); g>#}(u!PH
h.init(data); (9=E5n6o
for(int i=0;i h.remove(); vP+qwvpGr
System.arraycopy(h.queue,1,data,0,data.length); HV7f%U
} G'';VoW=
0P{8s
private static class MaxHeap{ "!fwIEG
;g;1<?
[
void init(int[] data){ LU8:]zOY
this.queue=new int[data.length+1]; ^QG<_Dm]
for(int i=0;i queue[++size]=data; aR'~=t&;z1
fixUp(size); ori[[~OyB
} FQE(qltf,
} Vg :''!4t2
P}>>$$b\Yi
private int size=0; Ab:ah7!
,rF!o_7
private int[] queue; G:wO1f6
3OY(L`
public int get() { &}|`h8JA]K
return queue[1]; J\p-5[E
} B/^o$i
H0yM`7[y
public void remove() { e
'F:LMX
SortUtil.swap(queue,1,size--); vlipB}
fixDown(1); c/:k|x
}
ZG{#CC =
file://fixdown d2)]6)z6
private void fixDown(int k) { U.b|3E/^
int j; (<@`MPI\@
while ((j = k << 1) <= size) { i el@"E 4
if (j < size %26amp;%26amp; queue[j] j++; rz2,42H]
if (queue[k]>queue[j]) file://不用交换 jGo\_O<of
break; qn,fx6v4
SortUtil.swap(queue,j,k); +x/vZXtOK
k = j; :#{0yno)H
} Iz;^D!
} Q`Q"p
private void fixUp(int k) { yF_/.m I
while (k > 1) { _34%St!lg
int j = k >> 1; @v!#_%J
if (queue[j]>queue[k]) {x[C\vZsi]
break; }_mMQg2>=
SortUtil.swap(queue,j,k); o>T+fBHE
k = j; y\[* mgl:
} fF=tT C
} ]{#Xcqx
Y=O-^fL
} 1CM8P3
NR-<2
e3
} B[
D
s?:
Bn=YGEvz
SortUtil: g[~J107%A
h0$ \JXk
package org.rut.util.algorithm; \OWxf[
Lxv_{~I*
import org.rut.util.algorithm.support.BubbleSort; 1,U)rx$H
import org.rut.util.algorithm.support.HeapSort; 0]$-}AYM
import org.rut.util.algorithm.support.ImprovedMergeSort; ,S@B[+VZ
import org.rut.util.algorithm.support.ImprovedQuickSort; V?`|Ha}
import org.rut.util.algorithm.support.InsertSort; zy8+~\a+Y&
import org.rut.util.algorithm.support.MergeSort; SJ:Teab
import org.rut.util.algorithm.support.QuickSort; fA[T5<66
import org.rut.util.algorithm.support.SelectionSort; o]&P0 b
import org.rut.util.algorithm.support.ShellSort; &%k_BdlkQ
~ahu{A4Bw
/** Cy B4apJ
* @author treeroot <1:I[b
* @since 2006-2-2 L'"c;FF02i
* @version 1.0 x&m(h1h
*/ $(08!U
public class SortUtil { mv`b3 $
public final static int INSERT = 1; nPl,qcyY
public final static int BUBBLE = 2; ?P#\CW
public final static int SELECTION = 3; %|f@WxNrU
public final static int SHELL = 4; ~x@V"rxGw
public final static int QUICK = 5; F[F
NtZ
public final static int IMPROVED_QUICK = 6; 0;*[}M]Z
public final static int MERGE = 7; /q7$"wP
public final static int IMPROVED_MERGE = 8; xo n^=Wo;
public final static int HEAP = 9; JS<w43/j
Ad>@8^
public static void sort(int[] data) { $?VYHkX
sort(data, IMPROVED_QUICK); qLKL*m
} #SjCKQ~
private static String[] name={ De>,i%`Q,D
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -lq`EB+
}; -~H
"zu`
ymnK `/J!Q
private static Sort[] impl=new Sort[]{ FP0GE
new InsertSort(), g:p`.KuB
new BubbleSort(), +JXn
new SelectionSort(), A_2lG!!
6
new ShellSort(), v;}MHl
new QuickSort(), CP$,fj
new ImprovedQuickSort(), ~3-+~y=o~
new MergeSort(), ?[WUix;
new ImprovedMergeSort(), -yu$Mm
new HeapSort() s&wm^R
}; hAP2DeT$
6{g&9~V
public static String toString(int algorithm){ D4$"02"
return name[algorithm-1]; WU.eeiX
} l <Z7bo
r&:yZN
public static void sort(int[] data, int algorithm) { :6m"}8*q8
impl[algorithm-1].sort(data); AI,E9
} 300[2}Y]
9+.3GRt7
public static interface Sort { I).eQ8:
public void sort(int[] data); L}_VT
J
} { Q!Xxe>6
+apn3\_
public static void swap(int[] data, int i, int j) { 1}p:]/;
int temp = data; 5>=4$!`
data = data[j]; f3h]t0M
data[j] = temp; 2n#H%&^?a
} }/IP\1bG
} (hRg0Z=