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。 l(#)WWr+
插入排序: ~JH:EB:
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package org.rut.util.algorithm.support; Tq4-wE+
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import org.rut.util.algorithm.SortUtil; U,.![TP
/** z+>}RT]
* @author treeroot WH\))y-
* @since 2006-2-2 VzKW:St
* @version 1.0 10U9ZC
*/ Qg<(u?7N
public class InsertSort implements SortUtil.Sort{ Pp5^@A
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/* (non-Javadoc) %p0xM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {qa Aq%'
*/ @#-q^}3
public void sort(int[] data) { <(-hx+^
int temp; /n8B,-Z5s5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '3 ^+{=q
} :]1TGfS
} c7FRI0X
} eh5gjSqx
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冒泡排序: 6efnxxY}sa
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package org.rut.util.algorithm.support; go<W( ,O
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import org.rut.util.algorithm.SortUtil; 9,r rQQD_
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/** `WH"%V:"Q
* @author treeroot <z!CDg4
* @since 2006-2-2 4BKI-;v$
* @version 1.0 n;T7= 1_"
*/ 6<ZkJ:=
public class BubbleSort implements SortUtil.Sort{ y7i*s^ys{
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/* (non-Javadoc) Z7?~S2{c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6 jn3`D
*/ LmnymcH
public void sort(int[] data) { V:c;-)(
int temp; 9BuSN*4
for(int i=0;i for(int j=data.length-1;j>i;j--){ /x1![$oC0
if(data[j] SortUtil.swap(data,j,j-1); z21|Dhiw&
} L');!/:
} qCnZhJ
} ]&pds\
} 3^6
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} I]EbodAyZ,
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选择排序: @0u~?!g@
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package org.rut.util.algorithm.support; `.Qi?* ^
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import org.rut.util.algorithm.SortUtil; Q{5kxw1ZF
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/** f__cn^1
* @author treeroot %s(k_|G+4
* @since 2006-2-2 "pRtczxOgR
* @version 1.0 ~,B5Hc 2
*/ K$E3QVa
public class SelectionSort implements SortUtil.Sort { S_IUV)
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/* 4QIX19{"
* (non-Javadoc) 4k@5/5zsM
* mh{1*T$fP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -K3^BZHI
*/ ^>hW y D
public void sort(int[] data) { ='Y!+
int temp; )j0TeE1R
for (int i = 0; i < data.length; i++) { In<n&ib
int lowIndex = i; m~-K[+ya`D
for (int j = data.length - 1; j > i; j--) { m1Mt#@,$
if (data[j] < data[lowIndex]) { 1R1z
lowIndex = j; vbC\?\_
} VYk!k3qS
} jGpN,/VQa
SortUtil.swap(data,i,lowIndex); Tw;3_Lj
} ([m
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} Lja>8m
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} ;CPr]avY
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Shell排序: io-![^{
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package org.rut.util.algorithm.support; )]H-BIuGm
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import org.rut.util.algorithm.SortUtil; G#u6Am)T
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/** P>NF.BCq
* @author treeroot g9Xu@N;bL
* @since 2006-2-2 K+3IWZ&+dG
* @version 1.0 9{5&^RbCp
*/ }n3/vlW9
public class ShellSort implements SortUtil.Sort{ <4g{ fT0
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/* (non-Javadoc) bj>v|#r^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xQ^E"Q,1
*/ YW( Qmo7
public void sort(int[] data) { pH"#8O&
for(int i=data.length/2;i>2;i/=2){ ECrex>zr%
for(int j=0;j insertSort(data,j,i); UJCYs`y
} IpcNuZo9&
} lE&&_INHQ
insertSort(data,0,1); AK*LyR?
} t>`asL
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/** ,0~n3G
* @param data }}\vV} s
* @param j C8 xZ;V]
* @param i pu
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*/ 0;AA/
private void insertSort(int[] data, int start, int inc) { ?&63#B,iZ
int temp; /tf5Bv'<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LXC9I/j/
} 7|$:=4
} ~,oMz<iMV
} 3c]b)n~Y
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} VFURAYS
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快速排序: FtfKe"qw
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package org.rut.util.algorithm.support; %t" CX5n
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import org.rut.util.algorithm.SortUtil; ~M7y*'oY
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/** +wN^c#~7
* @author treeroot ,y
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* @since 2006-2-2 7BK0}sxO
* @version 1.0 jY%na
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*/ K1\a#w
public class QuickSort implements SortUtil.Sort{ @Z\,q's
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/* (non-Javadoc) JGsx_V1t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :UF%K>k2
*/ lyy W
public void sort(int[] data) { QgU8s'e
quickSort(data,0,data.length-1); \eT5flC
} bzuEfFaL
private void quickSort(int[] data,int i,int j){ r^3acXl
int pivotIndex=(i+j)/2; -EkWs/'h
file://swap 'B 43_
SortUtil.swap(data,pivotIndex,j); GVYBa_gx
\]2]/=2tLd
int k=partition(data,i-1,j,data[j]); \Zqng
SortUtil.swap(data,k,j); naYrpK,.
if((k-i)>1) quickSort(data,i,k-1); [z`31F
if((j-k)>1) quickSort(data,k+1,j); MGR!Z@1y
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} )FF>IFHG
/** XWS%zLaK
* @param data j/r]wd"aUS
* @param i r? NznNVU
* @param j =|3ek
* @return
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*/ GqaDL3Niqs
private int partition(int[] data, int l, int r,int pivot) { 7=TF.TW)
do{ v/68*,z[
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j53*E
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SortUtil.swap(data,l,r); h_:C+)13`x
} vq^f}id
while(l SortUtil.swap(data,l,r); +e yc`J
return l; s:/8[(A
} 0=* 8
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} [E!oQVY
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改进后的快速排序: m#PY,y
Y^8C)p9r
package org.rut.util.algorithm.support; K?B{rE Lp
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import org.rut.util.algorithm.SortUtil; )vjh~ybZ
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/** }XV+gyG=@
* @author treeroot #(#Wv?r6
* @since 2006-2-2 4e~A1-
* @version 1.0 #A1Z'y0
*/ %Y<| ;0v
public class ImprovedQuickSort implements SortUtil.Sort { 0-HqPdjR
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private static int MAX_STACK_SIZE=4096; ~]pE'\D7Ad
private static int THRESHOLD=10; )uj Ex7&c
/* (non-Javadoc) OGde00
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &]e'KdXF
*/ b J=Jg~&
public void sort(int[] data) { TUV&vz{
int[] stack=new int[MAX_STACK_SIZE]; ,SynnE68
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int top=-1; KIui(n#/
int pivot; )6,de2Pb
int pivotIndex,l,r; yj;sSRT
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stack[++top]=0; Vr6@>@SC
stack[++top]=data.length-1; S1p;nK
*.sVr7=j
while(top>0){ 8jd;JPz@\
int j=stack[top--]; P
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int i=stack[top--]; %QH)' GJQ
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pivotIndex=(i+j)/2; *)ardZV${
pivot=data[pivotIndex]; 1crnmJ!C
s} UjGFP
SortUtil.swap(data,pivotIndex,j); UDL!43K
+Z7th7W/,
file://partition pk?w\A}
l=i-1; q qpgy7
r=j; PD&\LbuG
do{ u<3HQ.:;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OMWbZ>jB
SortUtil.swap(data,l,r); WG N=Y~E
} lD^]\;?
while(l SortUtil.swap(data,l,r); =yr0bGy`-
SortUtil.swap(data,l,j); P<l&0dPO8
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if((l-i)>THRESHOLD){ {5%5}[/x
stack[++top]=i; T&%ux=Jt
stack[++top]=l-1; 9xO#tu]
} $ACvV"b
if((j-l)>THRESHOLD){ iYDEI e
stack[++top]=l+1; [`{Z}q&
stack[++top]=j; ,TXTS*V?
} W3IpHV
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} o7J
file://new InsertSort().sort(data); PZE0}>z
insertSort(data); 0Fk5kGD,&K
} :*ing
/** 0y
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* @param data -BRc8 /
*/ bSfpbo4(
private void insertSort(int[] data) { 6|aKL[%6
int temp; jGXO\:sO
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ofPHmh`
} UUzYbuS>&l
} =NnNN'}
} m@"QDMHk.
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} W%T>SpFl
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归并排序: q}~3C1
?&|5=>u2}$
package org.rut.util.algorithm.support; *+j*{>E
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import org.rut.util.algorithm.SortUtil; ]bj&bk#
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/** Xe<sJ.&Wf
* @author treeroot ]$Yvj!K*Q
* @since 2006-2-2 Fs{x(_LOr
* @version 1.0 q;<h[b?
*/ _CW(PsfY
public class MergeSort implements SortUtil.Sort{ :uWw8`
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/* (non-Javadoc) ]8Q4BW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @\|_
*/ R_sr?V|"
public void sort(int[] data) { `8^TTQ
int[] temp=new int[data.length]; CjlKMbnBH
mergeSort(data,temp,0,data.length-1); h3bff#<K
} cWi}V
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private void mergeSort(int[] data,int[] temp,int l,int r){ Po ZuMF
int mid=(l+r)/2; -u2P ?~
if(l==r) return ; SS$[VV
mergeSort(data,temp,l,mid); *a58ZI@
mergeSort(data,temp,mid+1,r); k p<OJy
for(int i=l;i<=r;i++){ 3[O=xXB
temp=data; pPc TrN'
} |/09<F:L[
int i1=l; x$1]M DAGb
int i2=mid+1; fb{``,nO
for(int cur=l;cur<=r;cur++){ RLbKD>
if(i1==mid+1) m=}B,']O
data[cur]=temp[i2++]; :?/cPg'D
else if(i2>r) 8-BflejX
data[cur]=temp[i1++]; gW-V=LV (
else if(temp[i1] data[cur]=temp[i1++]; &;+-?k|
else KVD8YfF
data[cur]=temp[i2++]; QA<Jr5Ys
} D@Vt^_
} >sK!F$
f>W-
} U-IpH+E
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改进后的归并排序: N'g>MBdI
c2&q*]?l;
package org.rut.util.algorithm.support; <)u`~$n2
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import org.rut.util.algorithm.SortUtil; b]x4o#t
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/** WN01h=1J_
* @author treeroot poToeagZ~Q
* @since 2006-2-2 5\e9@1Rc
* @version 1.0 "tB;^jhRs
*/ OU8Lldt
public class ImprovedMergeSort implements SortUtil.Sort { Wzw7tLY._
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private static final int THRESHOLD = 10; 8>0e*jC
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/* f ` R/
i
* (non-Javadoc) <4P4u*/o
* B5X(ykaX~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f6p-s
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*/ &Rvm>TC=
public void sort(int[] data) { 1XD,uoxB
int[] temp=new int[data.length]; a{R%#e\n
mergeSort(data,temp,0,data.length-1); P%#<I}0C
} EJsM(iG]~M
^~3SSLS4"
private void mergeSort(int[] data, int[] temp, int l, int r) { a>GyO&+Dkg
int i, j, k; 4|CtRF<L
int mid = (l + r) / 2; EL(nDv
if (l == r) 4scNSeW
return; mGJasn
if ((mid - l) >= THRESHOLD) i(>4wK!!
mergeSort(data, temp, l, mid); ;*:Pw?'
else R'C2o]
insertSort(data, l, mid - l + 1); prTw'~(B
if ((r - mid) > THRESHOLD) FLGk?.x$\
mergeSort(data, temp, mid + 1, r); %O! v"Xh
else ,M^ P!
insertSort(data, mid + 1, r - mid); 8C67{^`::
vSi.txV2
for (i = l; i <= mid; i++) { 5 N#3a0)
temp = data; cVv;Jn
} p$PKa.Y3
for (j = 1; j <= r - mid; j++) { X)7x<?DAy
temp[r - j + 1] = data[j + mid]; 0l-Ef1
} JV]^zW
int a = temp[l]; OH">b6>\
int b = temp[r]; ?XA2&
for (i = l, j = r, k = l; k <= r; k++) { .
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if (a < b) { +f@U6Vv
data[k] = temp[i++]; rEv$+pP
a = temp; (X?%^^e!
} else { 4}4Pyjh
data[k] = temp[j--]; A29gz:F(
b = temp[j]; |j#C|V%kV
} 1 D<_N
} J"=vE=
} _OuWB"
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/** :'~Y
* @param data f;1K5Y
* @param l
@I_8T$N=
* @param i =8; {\
*/ 9983aFam
private void insertSort(int[] data, int start, int len) { ?e,pN,4
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >hk=VyU;
} )u/yF*:n
} 6^%68N1k
} dIRm q+d^
} Qj.l:9%
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堆排序: ~%SH3$
C4~;y hz
package org.rut.util.algorithm.support; }Ub6eXf(2
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import org.rut.util.algorithm.SortUtil; gG-BVl"59
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/** dt`{!lts'
* @author treeroot @+ BrgZv`
* @since 2006-2-2 ?q;Fp
* @version 1.0 SRrw0&ts
*/ @@8J6*y
public class HeapSort implements SortUtil.Sort{ #m{UrTC
z#]Jv!~EPE
/* (non-Javadoc) ;S57w1PbVA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &:, dJ
*/ jF=gr$
public void sort(int[] data) { 1DvR[Lx%
MaxHeap h=new MaxHeap(); p' +
h.init(data); ds?v'|
for(int i=0;i h.remove(); lJE93rXU
System.arraycopy(h.queue,1,data,0,data.length); 59O?_F9
} Bc6|n :;u
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private static class MaxHeap{ S%yd5<%_
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void init(int[] data){ %=/)
this.queue=new int[data.length+1]; ~Uxsn@nLr
for(int i=0;i queue[++size]=data; uoXAQ6k
fixUp(size); L7VG`h;
} \>7^f
3m
} {|1Y:&M?
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private int size=0; F@<CsgKB-
ad:&$
private int[] queue; 49w=XJ
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public int get() { _c,'>aH=
return queue[1]; +=.W<b
} `.x
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public void remove() { 4Qo]nre!
SortUtil.swap(queue,1,size--); XI9js{p
fixDown(1); uwjGDw
} `kU/NKq
file://fixdown \U[{z&]~
private void fixDown(int k) { =9"W@n[>W
int j; T)Y=zIQ1]7
while ((j = k << 1) <= size) { sfOHarww
if (j < size %26amp;%26amp; queue[j] j++; D;_ MPN[
if (queue[k]>queue[j]) file://不用交换 G=A,9@+c
break; T`Mf]s)*
SortUtil.swap(queue,j,k); JXu$ew>q
k = j; ;~\MZYs3m
} SL;9Q[
} DBCK2PlJ
private void fixUp(int k) { Sp^9&^
while (k > 1) { "V$Bnz\n
int j = k >> 1; w*|7!iM
if (queue[j]>queue[k]) {WPobP"
break; l?Fb ='#
SortUtil.swap(queue,j,k); @)-$kk*
k = j; y^}6!>Ou:
} 5<ux6,E1{
} j'BMAn ?
##EYH1P]
} 7
<Q5;J&;
)I$q 5%q8
} w);6K[+;
]- 4QNc=
SortUtil:
NsJ(`zk:
Ldl5zc
package org.rut.util.algorithm; y!!E\b=
E
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