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。 y]4`d
插入排序: 32P ]0&_O
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package org.rut.util.algorithm.support; 5w{pX1z1
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import org.rut.util.algorithm.SortUtil; s;WCz
/** iX6jvnJ:/
* @author treeroot k\%v;3nBK
* @since 2006-2-2 <u wCP4E
* @version 1.0 O9)}:++T
*/ I'b]s~u
public class InsertSort implements SortUtil.Sort{ ymX,k|lh
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/* (non-Javadoc) Z`c{LYP,y"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vnC&1
*/ -Ep6.v
public void sort(int[] data) { aW$nNUVD
int temp; Z x%@wH~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4yv31QG$
} RcP5].^T
} q#3X*!)
} ^(vd8 &71
beZ| i 1:
} ]sAD5<;
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冒泡排序: T["(YFCByg
P[ 8N58#
package org.rut.util.algorithm.support; Hvo27THLo
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import org.rut.util.algorithm.SortUtil; ++"PPbOe&D
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/** >{Z=cv/6o
* @author treeroot ZhaOH5{9
* @since 2006-2-2 hO@3-SRa,k
* @version 1.0 yv4PK*
*/ Asu"#sd
public class BubbleSort implements SortUtil.Sort{ J3+8s[oJ>
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/* (non-Javadoc) ~"Ki2'j)^]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uwA3!5
*/ L(8dK
public void sort(int[] data) { uI&M|u:nT
int temp; rapca'
for(int i=0;i for(int j=data.length-1;j>i;j--){ !I_4GE,
if(data[j] SortUtil.swap(data,j,j-1); @{lnfOESl
} uZI a-b
} N&`ay{&`:
} ;g]+MLV9
} 4HE4e
+'.Q-
} !;Nh7vG
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选择排序: 'Sh5W%NM
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package org.rut.util.algorithm.support; G3?z.5,Q
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import org.rut.util.algorithm.SortUtil; -#x\ E%v.F
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/** =>*N W9c
* @author treeroot rSn7(3e4^
* @since 2006-2-2 K_n%`5
* @version 1.0
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*/ P$I\)Q H
public class SelectionSort implements SortUtil.Sort { Y&:i^k
5K{h)* *5
/* oD\+ 5[x
* (non-Javadoc) O_^h 7
* >O~5s.1u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
?~IZ{!
*/ 3IFU{0a`
public void sort(int[] data) { UI;{3Bn
int temp; =YIQ
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for (int i = 0; i < data.length; i++) { Hp!F?J7sx
int lowIndex = i; E: k?*l
for (int j = data.length - 1; j > i; j--) { 063;D+
if (data[j] < data[lowIndex]) { (Ln h> '2
lowIndex = j; cC.DBYV+-
} R0}%
} 1[^d8!U
SortUtil.swap(data,i,lowIndex); dZmq
} ^ BKr0~4A
} :TI1tJS~*
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} <bI,y_<K
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Shell排序: =w-H )
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package org.rut.util.algorithm.support; ;zDc0qpw
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import org.rut.util.algorithm.SortUtil; mGvP9E"&
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/** ( Iew%U
* @author treeroot 2l?J9c}Wo
* @since 2006-2-2 7ow1=%Q
* @version 1.0 f6nltZ
*/ 6! 'Xo:p
public class ShellSort implements SortUtil.Sort{ ez{&Y>n
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/* (non-Javadoc) LKcrr;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UhK,H
*/ GWKefH
public void sort(int[] data) { 3yN1cd"#?
for(int i=data.length/2;i>2;i/=2){ BL67sva;
for(int j=0;j insertSort(data,j,i); 51x,[y+Xe
} x{$NstGB
} if>] )g2lr
insertSort(data,0,1); #Gx@\BE{
} X;h~s:LM
2uVm?nm
/** \`C3;}o:"P
* @param data Ek3O{<
* @param j k1J}9HNYR
* @param i /
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*/ mLE`IKgd]
private void insertSort(int[] data, int start, int inc) { ] ?(=rm9u
int temp; 7[LC*nrr
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rtm28|0H'
} u2QJDLMJv
} J++D\x#@
} )Pq.kn{Sp
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} X*KT=q^?n
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快速排序: }_ E
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package org.rut.util.algorithm.support; A\`Uu&
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import org.rut.util.algorithm.SortUtil; dkjL;1
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/** _wBPn6gg`
* @author treeroot ,P^"X5$
* @since 2006-2-2 6k2~j j1d
* @version 1.0 Y2Bu,/9^
*/ *RPI$0
public class QuickSort implements SortUtil.Sort{ zw?6E8$h
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^ Uw
/* (non-Javadoc) ;XT$rtuX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d9s"y?8
*/ _
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public void sort(int[] data) { Y%3j>_\;
quickSort(data,0,data.length-1); D%zIm,bf
} *d(Dk*(
private void quickSort(int[] data,int i,int j){ ScEM#9T |
int pivotIndex=(i+j)/2; Z_%>yqDC
file://swap Wxjpe4
SortUtil.swap(data,pivotIndex,j); ]P.S5s'
Ch3##-
int k=partition(data,i-1,j,data[j]); U/>5C:
SortUtil.swap(data,k,j); +xMDm_TGLA
if((k-i)>1) quickSort(data,i,k-1); \ CYu;
if((j-k)>1) quickSort(data,k+1,j); 4"{q|~&=:$
Ap/WgVw;
} D+OkD-8q
/** FwyPmtBj
* @param data ]l`DR4
=
* @param i |c)#zSv
* @param j ec|IT0;
* @return %Xn)$Ti~<
*/ N}\i!YUD
private int partition(int[] data, int l, int r,int pivot) { % uKDcj
do{ =$MV3]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }U9e#>ex
SortUtil.swap(data,l,r); d<]/,BY'
} )j](_kvK
while(l SortUtil.swap(data,l,r); rie1F,
return l; I8m(p+Z=
}
m{~r6@
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} >QYxX<W
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改进后的快速排序: bkb}M)C
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package org.rut.util.algorithm.support; 2l9_$evK~
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import org.rut.util.algorithm.SortUtil; I)clGMS,
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/** l1@:&j3h
* @author treeroot "YivjHa7H
* @since 2006-2-2 K.z@Vx.
* @version 1.0 %lujme
*/ H]cCyuCdH
public class ImprovedQuickSort implements SortUtil.Sort { ak%8|'}
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private static int MAX_STACK_SIZE=4096; k
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private static int THRESHOLD=10; akR*|iK#b
/* (non-Javadoc) 1Z`zdZs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !$j'F? 2>
*/ 3 Tt8#B
public void sort(int[] data) { k7j;'6
int[] stack=new int[MAX_STACK_SIZE]; 56fcifXz@
>d=k-d
int top=-1; !+i
int pivot; {9(N?\S1`a
int pivotIndex,l,r; o^Ms(?K%t
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stack[++top]=0; m$]?Jq
stack[++top]=data.length-1; tYnNOK*|
xSw ^v6!2
while(top>0){ Ax&+UxQ0|
int j=stack[top--]; ~#wq sm
int i=stack[top--]; $N~8^6
~GZ(Ou-&
pivotIndex=(i+j)/2; Jg@PhN<9
pivot=data[pivotIndex]; OfPWqNpO
%N 2=: ;f
SortUtil.swap(data,pivotIndex,j); Hg<]5
}nkX-PG9
file://partition \MnlRBUM,
l=i-1; ^27r-0|l^
r=j; ^hU7QxW
do{ hW(Mf
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m!g
f!
SortUtil.swap(data,l,r); vFQ'sd]C
} b?y3m +V`
while(l SortUtil.swap(data,l,r); +g(QF
SortUtil.swap(data,l,j); YI|7a#*F
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if((l-i)>THRESHOLD){ 1%H]2@
stack[++top]=i; 8!1vsEqv
stack[++top]=l-1; 4jvgyi9
} M5wj79'l"
if((j-l)>THRESHOLD){ `C,47 9~J
stack[++top]=l+1; SwLul4V
stack[++top]=j; h&&ufF]D
} $Die~rPU
4~D?F'o
} d&F8nBIM5
file://new InsertSort().sort(data); ^ [2A<
g
insertSort(data); k5(@n>p
} I
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/** Po% V%~
* @param data _L9`bzZj
*/ Or0=:?4`
private void insertSort(int[] data) {
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int temp; Ye T[KjX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); phd,Jg[
} fs\l*nBig
} g$~ktr+%
} LyH{{+V
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} SO9j/
2ACN5lyUS
归并排序: L'.7V ~b{
525W;
mu{
package org.rut.util.algorithm.support; Jc/*w
}! x\qpA
import org.rut.util.algorithm.SortUtil; YuFJJAJ
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/** 4Z,MqG>
* @author treeroot 3 cu`U`
* @since 2006-2-2 >k5nU^|B1
* @version 1.0 Ab/gY$l
*/ J;HkR9<C
public class MergeSort implements SortUtil.Sort{ eVS6#R]'m
5?{a=r9
/* (non-Javadoc) 2/3,%5j_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hIE$u t +
*/ oIN!3
public void sort(int[] data) { 82{Lx7pI
int[] temp=new int[data.length]; ,dP-sD;<
mergeSort(data,temp,0,data.length-1); #3leMZ6
} Z+x,Awq
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private void mergeSort(int[] data,int[] temp,int l,int r){ !ffdeWHR
int mid=(l+r)/2; {%*,KB>b
if(l==r) return ; ,E<(K8
mergeSort(data,temp,l,mid); R_`i=>Z-
mergeSort(data,temp,mid+1,r); :2vk
vLM
for(int i=l;i<=r;i++){ vvwNJyU-
temp=data; )%I2#Q"Nt-
} 1^jGSB.%A
int i1=l; yHsmX2s
int i2=mid+1; ,3 =|a|p
for(int cur=l;cur<=r;cur++){ INZsDM 9
if(i1==mid+1) A\X?Aq-^'
data[cur]=temp[i2++]; ~dg7c{o5
else if(i2>r) D6fry\
data[cur]=temp[i1++]; OrNi<TY>
else if(temp[i1] data[cur]=temp[i1++]; ~bC{R&p
else Yi1lvB?m
data[cur]=temp[i2++]; kaqH.e(
} jvv3;lWDL.
} dI};l
V.?N29CA|
} ~.;+uH<i
YMb\v4
改进后的归并排序: qbrY5;U
5)bf$?d
package org.rut.util.algorithm.support; ZCVwQ#Xe+
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import org.rut.util.algorithm.SortUtil; %5Q5xw]w3
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/** =:Ahg
9
* @author treeroot d^p af
* @since 2006-2-2 %&w 8E[
* @version 1.0 84 5a%A$
*/ w/&)mm{
public class ImprovedMergeSort implements SortUtil.Sort { :p%G+q2
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private static final int THRESHOLD = 10; 8`~M$5!
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/* P@lDhzd
* (non-Javadoc) u_ou,RF
* )IQ5Qu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bS7rG$n [
*/ >ka*-8?
public void sort(int[] data) { b|jdYJbol&
int[] temp=new int[data.length]; qRi;[`
mergeSort(data,temp,0,data.length-1); J8IdQ:4^l
} P5-1z&9O
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private void mergeSort(int[] data, int[] temp, int l, int r) { #y;TSHx/
int i, j, k; DD5S
R
int mid = (l + r) / 2; X)6}<A
if (l == r) '9d<vWg
return; [Ume^
if ((mid - l) >= THRESHOLD) ML eo3
mergeSort(data, temp, l, mid); g2)jd[GM
else vz$-KT4e^
insertSort(data, l, mid - l + 1); YvA@I|..~
if ((r - mid) > THRESHOLD) k%2woHSu&
mergeSort(data, temp, mid + 1, r); l}w9c`f
else RgTm^?Ex
insertSort(data, mid + 1, r - mid); Q5Yy
\M
ygI81\D
for (i = l; i <= mid; i++) { rF n%e
temp = data; Z8mSm[w
} DNTkv_S
for (j = 1; j <= r - mid; j++) { pAK7V;sJ
temp[r - j + 1] = data[j + mid]; $U. >]i
} 9rD6."G
int a = temp[l]; 3X|7 R
int b = temp[r]; XL=Y~7b
for (i = l, j = r, k = l; k <= r; k++) { f[r?J/;P9
if (a < b) { F/8="dM
data[k] = temp[i++]; I'sq0^
a = temp; `eZ
+Pf".
} else { -!_\4
data[k] = temp[j--]; 1=o|[7
b = temp[j]; m 0jm$>:Z
} ''.P=
} Q#gzk%jL@
} CB!5>k+mC
Q5K<ECoPk
/** AlPk o($E*
* @param data MZPXI{G
* @param l ?so=k&I-M
* @param i l rRRRR
*/ g<b(q|
private void insertSort(int[] data, int start, int len) { [- Xz:
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Uw`YlUT\
} J)kH$!csi
} yLFZo"r
} $RASpM
} Nj5V" c
X6h@K</c^:
堆排序: s*XE
UYw_k\
package org.rut.util.algorithm.support; $~^Y4 }
m
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import org.rut.util.algorithm.SortUtil; k 'CM^,F&
P
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/** fC4#b?Q
* @author treeroot }^b7x;O|
* @since 2006-2-2 h
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* @version 1.0 |M;tAG$,"y
*/ 6x]x>:8
public class HeapSort implements SortUtil.Sort{ An.Qi =Cv
V?[dg^*0
/* (non-Javadoc) r:.ydr@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EdH;P\c
*/ PQ0l <]Y
public void sort(int[] data) { ,V`zW<8
MaxHeap h=new MaxHeap(); [<0\v<{`L
h.init(data); \N|ma P
for(int i=0;i h.remove(); #.j[iN
:+
System.arraycopy(h.queue,1,data,0,data.length); JXhHitUD
} (7zdbJX
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private static class MaxHeap{ ^Fop/\E
o)B`K."
void init(int[] data){
v,eTDgw
this.queue=new int[data.length+1]; jsp)e=
for(int i=0;i queue[++size]=data; 7RpAsLH=
fixUp(size); 'B"A*!"b
} &x
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} AiDV4lHr
=cP7"\
private int size=0; BH;7CK=7R
~ZxFL$<'3
private int[] queue; )8,) &F
vG2&qjY1
public int get() { :c?}~a~JO(
return queue[1]; ^7p>p8
} g!![%*'
b
S.)+C2g,@
public void remove() { =Rw-@*#l
SortUtil.swap(queue,1,size--); s/+k[9l2
fixDown(1); PV(TDb:0
} q@+#CUa&n
file://fixdown $~G=Hcl9
private void fixDown(int k) { _yH=w'8.
int j; rzk-_AFR
while ((j = k << 1) <= size) { {y\5 9
if (j < size %26amp;%26amp; queue[j] j++; _=g;K+%fb
if (queue[k]>queue[j]) file://不用交换 yG/_k!{9
break; =QG0:z)K<v
SortUtil.swap(queue,j,k); {=Y3[
k = j; 'P`L?/_3
} wI{ED
} KD(}-zUs
private void fixUp(int k) { <\6<-x(H5
while (k > 1) { .29y3}[PO
int j = k >> 1; tR{@NFUcu
if (queue[j]>queue[k]) =7l'3z8
break; {E3329t|'
SortUtil.swap(queue,j,k); lYq/
n&@_1
k = j; lk[BS*
} %uUQBZ4
} s9 \HjK*+
jb'AOs
} No(p:Snbo
q33Z.3R
} $Y3mO~
#ouE,<
SortUtil: cy%S5Rz
}b$W+/M\
package org.rut.util.algorithm; nyRQ/.3
2c u?2_,
import org.rut.util.algorithm.support.BubbleSort; H}f}Y8J{
import org.rut.util.algorithm.support.HeapSort; kCVO!@yZz
import org.rut.util.algorithm.support.ImprovedMergeSort; I<}<!.Bc!
import org.rut.util.algorithm.support.ImprovedQuickSort; ?E2$
import org.rut.util.algorithm.support.InsertSort; h+"UK=
import org.rut.util.algorithm.support.MergeSort; c&]nAn(
import org.rut.util.algorithm.support.QuickSort; &}."sGK
import org.rut.util.algorithm.support.SelectionSort; EZw<)Q
import org.rut.util.algorithm.support.ShellSort; [(d))(M$|
PSR21;
/** B{dR/q3;@
* @author treeroot fEgwQ-]
* @since 2006-2-2 c:OFBVZ
* @version 1.0 cZFG~n/
*/ s<hl>vY_'
public class SortUtil { =VFPZ
public final static int INSERT = 1; ~MZEAY9
public final static int BUBBLE = 2; *$6dN x
public final static int SELECTION = 3; wBaIN]Y,
public final static int SHELL = 4; D>>?8a
public final static int QUICK = 5; rd\:.
public final static int IMPROVED_QUICK = 6; ji] H|
public final static int MERGE = 7; &X`zk
public final static int IMPROVED_MERGE = 8; [>#@?@x`P
public final static int HEAP = 9; rq]zt2
#l<un<
public static void sort(int[] data) { 9irT}e
sort(data, IMPROVED_QUICK); %j7HIxZh
} jVxX! V
private static String[] name={ 9% wVE]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NKX62 ZC
}; *l9Wj$vja
ZPO+ #,
private static Sort[] impl=new Sort[]{ $eQf 5)5
new InsertSort(), ynQ+yW74Z
new BubbleSort(), 83[gV@LW0m
new SelectionSort(), :@=;WB*0
new ShellSort(), ijuIf9!
new QuickSort(), u}~j NV
new ImprovedQuickSort(), |9&bkojo
new MergeSort(), ]A%S&q
new ImprovedMergeSort(), +"8-)'
new HeapSort() OMM5p=2Q
}; >$ok3-tuU
a* GiLq
public static String toString(int algorithm){ ) h>H}wDs
return name[algorithm-1]; ~;ZT<eCIA
} QswbIP/>:'
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public static void sort(int[] data, int algorithm) { iFBH;O_~
impl[algorithm-1].sort(data); /'<Qk'
} S9@2-Oc
6vL+qOd x
public static interface Sort { !L|PDGD
public void sort(int[] data); <^v-y)%N:A
} Hp}d m93T
NBaXfWh
public static void swap(int[] data, int i, int j) { 7sglqf>
int temp = data; {S*:pG:+q
data = data[j]; X`'
@G
data[j] = temp; C(jUM!m
} 7!kbe2/]'
} t,4'\nv*