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。 xx`xDD
插入排序: p.1@4kgK&r
K}e%E&|>
package org.rut.util.algorithm.support; &eL02:[
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import org.rut.util.algorithm.SortUtil; +ML4.$lc^
/** }w{6Ua
* @author treeroot [&e|:1
* @since 2006-2-2 >?/Pl"{b
* @version 1.0 cn62:p]5
*/ m5c?A+@fZ
public class InsertSort implements SortUtil.Sort{ %~eIx=s
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/* (non-Javadoc) {O ]^8#v^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W rB:)Q(8=
*/ iI|mFc|V
public void sort(int[] data) { fhGI
int temp; TPjElBh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {z~n`ow
} AgEX,SPP
} 5L6_W-n{
} u^HC1r|%
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} |]--sUx:
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冒泡排序: -MEp0
1:!_AU?
package org.rut.util.algorithm.support; 6#[
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import org.rut.util.algorithm.SortUtil; RLy(Wz3%
V
iY -&q'
/** `1}WQS
* @author treeroot aQjs5RbP~
* @since 2006-2-2 05o)Q &`
* @version 1.0 :G3PdQb^
*/ BC: d@
public class BubbleSort implements SortUtil.Sort{ 7s8-Uwl<
{)V!wSi
/* (non-Javadoc) 8DAHaS;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <v&L90+s\;
*/ >6Y@8 )
public void sort(int[] data) { j) G<PW
int temp; lZ5LHUzP
for(int i=0;i for(int j=data.length-1;j>i;j--){ /\L-y,>X
if(data[j] SortUtil.swap(data,j,j-1); 6pJFrWe{
} }W2FF
} ;Gc,-BDFw
} /g/]Q^
} kq| r6uE
S2y_5XJ<D
} =VC"X ?N
V{jQ=<)@e
选择排序: JRti2Mu
bsuGZ
package org.rut.util.algorithm.support; z):LF<
b/[$bZD5o
import org.rut.util.algorithm.SortUtil; voX4A
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/** `O+}$wP
* @author treeroot =Msr+P9Ai
* @since 2006-2-2 6zbqv 6
* @version 1.0 h^QLvOuR
*/ 6zyxGJ(
public class SelectionSort implements SortUtil.Sort { ]A?(OA
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/* 0tz7^:|D
* (non-Javadoc) xDqJsp=]-
* M `O=rH
}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `T'[H/
*/ t=l@(%O 0_
public void sort(int[] data) { U/}("i![Dy
int temp; V ,+&.A23
for (int i = 0; i < data.length; i++) { >Hr&F
nh+
int lowIndex = i; ~ 3!yd0[k
for (int j = data.length - 1; j > i; j--) { @\*`rl]
if (data[j] < data[lowIndex]) { .ZOG,h+8
lowIndex = j; WswM5RN
} Y0z)5),[U:
} XE#a#
SortUtil.swap(data,i,lowIndex); plNoI1st
} 6o:b(v&Oo
} $?Km3N\?v
fA$2jbGW
} ahh&h1q7|
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Shell排序: wZUZ"Y}9
$.Ia;YBf
package org.rut.util.algorithm.support; G;ihm$Cad
$~3?nib"j
import org.rut.util.algorithm.SortUtil;
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FOyANN'
/** R$Rub/b6
* @author treeroot ;NoiH&
* @since 2006-2-2 + *W%4e
* @version 1.0 MZrLLnl6\
*/ y&n-8L_
public class ShellSort implements SortUtil.Sort{ */_$' /qV
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/* (non-Javadoc) ?]%ZJd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i,h)VCc
*/ xe4`D>LUo
public void sort(int[] data) { 9^?2{aP%
for(int i=data.length/2;i>2;i/=2){ ZGw6Bd_I
for(int j=0;j insertSort(data,j,i); %!\iII
} +@^FUt=tq
} {^@vCBE+
insertSort(data,0,1); 6:Hd `
} %zKTrsMZ
+xL' LCx
/** " k0gZb
* @param data Y=?Tm,z4
* @param j ]\1H=g%Ou
* @param i 2!)|B
;y
*/ [-0=ZKH?
private void insertSort(int[] data, int start, int inc) { 3^Q;On|
int temp; {_G_YL[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6fm oIK{
} F! [Gj%~I
} 8kf5u#,'
} 6Z@?W
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} mIe 5{.m#
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快速排序: .~a.mT
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package org.rut.util.algorithm.support; \ nUJ)w
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import org.rut.util.algorithm.SortUtil; WCYVon bg"
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/** <lZVEg
* @author treeroot w5+(A_
* @since 2006-2-2 Yc:>Yzj(z
* @version 1.0 Z5V_?bm$
*/ m;J'y2h =$
public class QuickSort implements SortUtil.Sort{ yRivf.wH
6{w'q&LYcE
/* (non-Javadoc) \;+TZ1i_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z817f]l
*/ N^{}Qvrr
public void sort(int[] data) { _oHxpeM
quickSort(data,0,data.length-1); b{CS1P
} %0zp`'3Y
private void quickSort(int[] data,int i,int j){ mKLWz1GZ
int pivotIndex=(i+j)/2; cte
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file://swap 12V-EG i
SortUtil.swap(data,pivotIndex,j); M_O) w^
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int k=partition(data,i-1,j,data[j]); {t*CSI
SortUtil.swap(data,k,j); $3S`A]xO
if((k-i)>1) quickSort(data,i,k-1); 9T\\hM)k
if((j-k)>1) quickSort(data,k+1,j); G b4p"3
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} ,z01*Yx
/** x21XzGLY|}
* @param data t>2EZ{N+y
* @param i mT>RQ.
* @param j ;v!Ef"E|cV
* @return gDjAnz#
*/ OYfRtfE
private int partition(int[] data, int l, int r,int pivot) { w!b;.l
do{ u}?|d8$h\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -nZDFC8y$
SortUtil.swap(data,l,r); `k7X|
} _ mgu
r
while(l SortUtil.swap(data,l,r); p@?ud%
return l; *Oq&g\K)
} [4Q;5 'Dj
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} BQ=JZ4&
t:P]G>)x|
改进后的快速排序: ,b<m],p
mYqLqezAA
package org.rut.util.algorithm.support; A>frf[fAW
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import org.rut.util.algorithm.SortUtil; U1D;O}z~
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/** v=daafO
* @author treeroot ,=[r6k<
* @since 2006-2-2 ?jsgBol
* @version 1.0 JF'<""
*/ w^ X@PpP
public class ImprovedQuickSort implements SortUtil.Sort { /vPr^Wv
^SbxClUfw!
private static int MAX_STACK_SIZE=4096; [[O4_)?el
private static int THRESHOLD=10; ;3iWV"&_A
/* (non-Javadoc) JH#p;7;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^}UFtL i
*/ I0N~>SpZ5
public void sort(int[] data) { iGBHlw;A
int[] stack=new int[MAX_STACK_SIZE]; SB:z[kfz|
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int top=-1; od^o9(.W^
int pivot; Z?qc4Cg
int pivotIndex,l,r; lpjby[S
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stack[++top]=0; :|-^et]a8
stack[++top]=data.length-1; I/zI\PP,
#@F
while(top>0){ RLO<5L
int j=stack[top--]; @o&UF-=MW(
int i=stack[top--]; Ev T"+;9/p
Pk6_ 1LV
pivotIndex=(i+j)/2; paUJq?Af
pivot=data[pivotIndex]; R8Dn
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PB#EU9
SortUtil.swap(data,pivotIndex,j); [KMS/'; ]
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file://partition Bw.?Me)mf|
l=i-1; keJ-ohv)
r=j; eI@G B
do{ P!!:p2fo
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U%K gLg#
SortUtil.swap(data,l,r); [4-u{Tu
} JmuoYl f|
while(l SortUtil.swap(data,l,r); !
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SortUtil.swap(data,l,j); L>rW S-
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if((l-i)>THRESHOLD){ uFG ;AY|
stack[++top]=i; 0xV[C4E[6
stack[++top]=l-1; LAGg(:3f3
} b~?3HY:t~K
if((j-l)>THRESHOLD){ C9j5Pd5q1L
stack[++top]=l+1; "uBr]N:
stack[++top]=j; 6Z-[-0o+g
} \wp8kSzC
} 7i}dyQv}
} k~]\kv=
file://new InsertSort().sort(data); 3=_to7]
insertSort(data); [bEm D
} lgC^32y
/** n*hRlL
* @param data 7H. HiyppW
*/ 6W'2w?qj?4
private void insertSort(int[] data) { 85](,YYz
int temp; zeuSk|O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W|6.gN]
} lAAP V
} bQwiJ`B&
} \V*E:_w*
wEEFpn_
} >+S* Wtm5
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归并排序: Ws[d. El
_m1WY7
package org.rut.util.algorithm.support; X'5+)dj
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import org.rut.util.algorithm.SortUtil; 7T?7KS
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/** EU()Nnm2
* @author treeroot ?D]T|=EZY
* @since 2006-2-2 u
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* @version 1.0 S4%MnT6Uy
*/
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public class MergeSort implements SortUtil.Sort{ e0<L^|S
leEzfbb{'.
/* (non-Javadoc) tUs{/Je
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5G#K)s(QC
*/ @TnAO8Q>XD
public void sort(int[] data) { 0>0:ls
int[] temp=new int[data.length]; `pXC= []B2
mergeSort(data,temp,0,data.length-1); I`}x 9t
} ~wd~57i@
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private void mergeSort(int[] data,int[] temp,int l,int r){ nb|"dK|
int mid=(l+r)/2; hN_,Vyf
if(l==r) return ; Zx,aj
mergeSort(data,temp,l,mid); ?Tk4Vt
mergeSort(data,temp,mid+1,r); }{e7wqS$&,
for(int i=l;i<=r;i++){ G$
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temp=data;
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} kN$L8U8f
int i1=l; ,lw<dB@7"5
int i2=mid+1; o#F0 3
for(int cur=l;cur<=r;cur++){ /J'dG%
if(i1==mid+1) A\<WnG>xjP
data[cur]=temp[i2++]; Y&DC5T]
else if(i2>r) fpvzx{2
data[cur]=temp[i1++]; E%>){Y)
else if(temp[i1] data[cur]=temp[i1++]; _:l<4u!
else J""N:X!1
data[cur]=temp[i2++]; q,eXH8 x
} ;AgXl%Q
} \J^|H@;(@
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} E- rXYNfy
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改进后的归并排序: "G!V?~;
:#p!&Fi
package org.rut.util.algorithm.support; wz]OM
L}%4YB
import org.rut.util.algorithm.SortUtil; Ci^tP~)&"
@T+pQ)0{{
/** +Pm}_"GU
* @author treeroot
+0O^!o
* @since 2006-2-2 :n<<hR0d
* @version 1.0 dNcP_l/A
*/ ;/-#oW@gQ
public class ImprovedMergeSort implements SortUtil.Sort { kzb1iBe 6m
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private static final int THRESHOLD = 10; We,~P\g
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/* gL;tyf1P
* (non-Javadoc) r` (U3EgP
* sp$W=Wu7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GPnSdGLC
*/ >P\/\xL=
public void sort(int[] data) { ZN?UkFnE
int[] temp=new int[data.length]; ,b8q$R~\
mergeSort(data,temp,0,data.length-1); tvG/oe .1'
} .% EEly
t Sf`
private void mergeSort(int[] data, int[] temp, int l, int r) { hgi9%>oUB
int i, j, k; c/E6}OWA
int mid = (l + r) / 2; VR9C< tMSi
if (l == r) i&?do{YQ)
return; &4O0}ax*Zm
if ((mid - l) >= THRESHOLD) qjp<_aw
mergeSort(data, temp, l, mid);
: V#W
y
else x?|
insertSort(data, l, mid - l + 1); p#dpDjh
if ((r - mid) > THRESHOLD) Wc)f:]7
mergeSort(data, temp, mid + 1, r); +Ss|4O}'
else W:16qbK
insertSort(data, mid + 1, r - mid); j/xL+Y(=
!(<Yc5
for (i = l; i <= mid; i++) { URD<KIN>
temp = data; -3T6ck
} K)"cwk-
for (j = 1; j <= r - mid; j++) { eqze7EY
temp[r - j + 1] = data[j + mid]; \WVrn >%xu
} UN}jpu<h
int a = temp[l]; xd H*[
int b = temp[r]; ]OOL4=b
for (i = l, j = r, k = l; k <= r; k++) { 0oi
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if (a < b) { \'40u|f
data[k] = temp[i++]; RT)*H>|
a = temp; '
cl&S:
} else { 5? s$(Lt~
data[k] = temp[j--]; V/G'{ q
b = temp[j]; ZrFC#wJb
} 8?r
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} a|im DY_-j
} DN@T4!
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/** )5j%."
* @param data dEp?jJP$;
* @param l }X3SjNd q
* @param i vO2 o/
*/ 0VB~4NNR
private void insertSort(int[] data, int start, int len) { +`x8[A)-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Osdw\NNH~M
} ?b~V uo
} [S/]Vk|4
} ]64mSB
} *_z5Pa`A
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堆排序: rnVh
]xJ
h*Y);mc$#
package org.rut.util.algorithm.support; 8vM}moper
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import org.rut.util.algorithm.SortUtil; +M6qbIO
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/** *Ki ],>_~
* @author treeroot E
VBB:*q6
* @since 2006-2-2 +]Y&las
* @version 1.0 +t
R6[%
*/ {7)D/WY5
public class HeapSort implements SortUtil.Sort{ !0~$u3[b
Fr)G
h>
/* (non-Javadoc) +QIM~tt)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) por[p\ M.
*/ ]iuM2]
public void sort(int[] data) { O=#FpPHrdw
MaxHeap h=new MaxHeap(); g`!:7|&,_
h.init(data); J8$G-~MeJ
for(int i=0;i h.remove(); DLkNL?a
System.arraycopy(h.queue,1,data,0,data.length); $@t-Oor;
} 31y=Ar""
ubIGs|p2c
private static class MaxHeap{ V,($I'&/
92GO.xAD?
void init(int[] data){ p
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this.queue=new int[data.length+1]; 5yO6szg
for(int i=0;i queue[++size]=data; j3rBEQ,R
fixUp(size); o)7gKWjujP
} s!09Pxc
} h@T}WZv
Pt?]JJxl-
private int size=0; DEaO=p|
*lg1iP{]
private int[] queue; Zg|z\VR
Z^>[{|lIA
public int get() { m u(HNj
return queue[1]; %lchz/
} W 0Q-&4
X|H%jdta
public void remove() { su(y*187A
SortUtil.swap(queue,1,size--); 0iW]#O/
fixDown(1); &eT)c<yhyK
} 'N],d&fu^^
file://fixdown Uq&ne1
private void fixDown(int k) { @YP\!#"8
int j; f8)D|
while ((j = k << 1) <= size) { b1jh2pG(V
if (j < size %26amp;%26amp; queue[j] j++; 0i9y-32-
if (queue[k]>queue[j]) file://不用交换 jNV2o
break; 'z2}qJJ)
SortUtil.swap(queue,j,k); UnZ*"%
k = j; (
=->rP
} wYhWRgP
} y>u+.z a|
private void fixUp(int k) { gy _86y@
while (k > 1) { ~-Rr[O=E
int j = k >> 1; V#|#%
8
if (queue[j]>queue[k]) R)t"`'6|
break; @?{n`K7{`
SortUtil.swap(queue,j,k); f
5_n2
k = j; L._I"g5 H9
} J
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} q,2]]K7y
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} B} gi /
nbw&+dcJ8
} x$AF0xFO
qJFBdJU (1
SortUtil: O%A:2Y79
Nc[>CgX"@
package org.rut.util.algorithm; ~o%|#-S
oDx*}[/
import org.rut.util.algorithm.support.BubbleSort; +GgWd=X.Y
import org.rut.util.algorithm.support.HeapSort; ji`N1e,l
import org.rut.util.algorithm.support.ImprovedMergeSort; BXaA#} ;e
import org.rut.util.algorithm.support.ImprovedQuickSort; ,>2ijk#
import org.rut.util.algorithm.support.InsertSort; EKk~~PhW 8
import org.rut.util.algorithm.support.MergeSort; {.z2n>1J{T
import org.rut.util.algorithm.support.QuickSort; e6k}-<W*q
import org.rut.util.algorithm.support.SelectionSort; |t|+pBB
import org.rut.util.algorithm.support.ShellSort; z['>`Kt
*4r
1g+0
/** ];^A8?
* @author treeroot RM-|?%
* @since 2006-2-2 NyJU?^f&v
* @version 1.0 Wk'KN o
*/ k _hiGg
public class SortUtil { 18Pc4~>0
public final static int INSERT = 1; IO`.]iG
public final static int BUBBLE = 2; >f19P+
public final static int SELECTION = 3; ;Mc\>i/
public final static int SHELL = 4; 75@){ :
public final static int QUICK = 5; !~m)_Q5?~
public final static int IMPROVED_QUICK = 6; BkJV{>?_+
public final static int MERGE = 7; HLAWx/c,j"
public final static int IMPROVED_MERGE = 8; 3ZU`}
public final static int HEAP = 9; \S }&QV