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。 :svKE.7{
插入排序: Md5|j0#p
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package org.rut.util.algorithm.support; [11D7L%1t
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import org.rut.util.algorithm.SortUtil; R5b!Ao
/**
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* @author treeroot j=U^+jAn
* @since 2006-2-2 6eB2mcV
* @version 1.0 S}}L&
_
*/ #
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public class InsertSort implements SortUtil.Sort{ lK2=[%,~
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/* (non-Javadoc) )?$zY5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q&?^eOI(
*/ N~)RR {$w
public void sort(int[] data) { Kt*kARN?
int temp; >U9JbkeF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "?n;dXYSi
} {k15!(:i~a
} cAQ_/>
} Vm8rQFCp74
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} W>'KE:!sp
K @h94Ni6
冒泡排序: .`TDpi9OB
mr[+\
5
package org.rut.util.algorithm.support; v"v-c!k
v~AD7k2{8
import org.rut.util.algorithm.SortUtil; kBlk^=h<:w
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/** 8iwH^+h~
* @author treeroot n5z";:p
* @since 2006-2-2 b.#0{*/G
* @version 1.0 "">{8
*/ d&owS+B{48
public class BubbleSort implements SortUtil.Sort{ /V"6Q'D
$a.,;:
/* (non-Javadoc) %s),4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Id<O/C
*/ k"pN
public void sort(int[] data) { 3jzmiS]
int temp; ClWxL#L6~
for(int i=0;i for(int j=data.length-1;j>i;j--){ gnWEsA\!
if(data[j] SortUtil.swap(data,j,j-1); G]k+0&X
} 6Z>G%yK
} `Re{j{~s
} *Me&>"N"
} HU47S
LKsK!X
} ?C`&*+
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选择排序: +d'1
4DV@-
package org.rut.util.algorithm.support; j9g0k<eg
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import org.rut.util.algorithm.SortUtil; pzFM#
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/** .qfU^AHA
* @author treeroot Zk<Y+!
* @since 2006-2-2 8k9q@FSln
* @version 1.0 4OTrMT$y
*/ D0*+7n3
public class SelectionSort implements SortUtil.Sort { &, %+rvo}
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/* (4Ha'uqz
* (non-Javadoc) .:9XpKbt
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3:?QE
*/ z`2Ais@ao
public void sort(int[] data) { rGgP9
(
int temp; HvJ-P#
for (int i = 0; i < data.length; i++) { B{2WvPX~q
int lowIndex = i; eEZZ0NNe;
for (int j = data.length - 1; j > i; j--) { ,UATT]>
if (data[j] < data[lowIndex]) { iNG =x
lowIndex = j; V:h3F7
} g..&x]aS(
} qE@H~&
SortUtil.swap(data,i,lowIndex); #``Alh8
} g=Bge)
} 1{$=N2U
)F3>
} 5XF&yYWq
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Shell排序: 9|x{z
xv9G%
package org.rut.util.algorithm.support; w1:%P36H
#m6W7_
import org.rut.util.algorithm.SortUtil; }_,={<g
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/** (yv)zg9
* @author treeroot <uXQT$@?
* @since 2006-2-2 @s8wYcW
* @version 1.0 uXm}THI
*/ q!whWA
public class ShellSort implements SortUtil.Sort{
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/* (non-Javadoc) a(IZ2Zmr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m.&"D>
\t
*/ 2bt).gGm
public void sort(int[] data) { +O?`uV
for(int i=data.length/2;i>2;i/=2){ _qU;`Q
for(int j=0;j insertSort(data,j,i); ~ea&1+Z[3
} oA`G\Xh_E
} -5u. Ix3
insertSort(data,0,1); PD`EtkUnv
} 'da$i
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/** ds:&{~7L<T
* @param data .s`7n
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* @param j 5O]eD84B
* @param i |3dIq=~1"Y
*/ k56*eEc
private void insertSort(int[] data, int start, int inc) { hO..j
int temp; tvR|!N }
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rPkPQn:
} ^.u
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} 5@yBUwMSj
} >e^8fpgSo
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} #)z7&nD
l;vA"b=]
快速排序: GEZ!z5";BQ
n{E9p3i
package org.rut.util.algorithm.support; =0_((eXwf
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import org.rut.util.algorithm.SortUtil; z18<rj
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/** !WNO!S0/j
* @author treeroot |6T"T P
* @since 2006-2-2 A}MF>.!}C
* @version 1.0 8
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*/ A"Sp7M[J
public class QuickSort implements SortUtil.Sort{ R~N'5#.*M
4$Ud4<
/* (non-Javadoc) 2,e>gP\]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !DZ4C.
*/ T~)zgu%q_
public void sort(int[] data) { yPT\9"/
quickSort(data,0,data.length-1); mJa8;X!r6
} *ez7Q
private void quickSort(int[] data,int i,int j){ Mq4>Mu
int pivotIndex=(i+j)/2; x4[
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file://swap (k24j*1e$
SortUtil.swap(data,pivotIndex,j); &n9srs
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int k=partition(data,i-1,j,data[j]); 31{)~8
SortUtil.swap(data,k,j); C)|#z/"
if((k-i)>1) quickSort(data,i,k-1); KJCi4O&
if((j-k)>1) quickSort(data,k+1,j); ?jHu,
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(^l
} ^=,N]
j
/** L,*#
* @param data Dt
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* @param i i$dF0.}Q
* @param j Rq,Fp/
* @return dZ"d`M>o6
*/ DP=\FG"}x
private int partition(int[] data, int l, int r,int pivot) { &C.m*^`^
do{ ?oulQR6:
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M<cm]
SortUtil.swap(data,l,r); w_9[y
} +YnQOh%v0s
while(l SortUtil.swap(data,l,r); J%lEyU
return l; C:{&cIFrPe
} eZ;DNZK av
HVaKy+RU
} 6d%)MEM
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改进后的快速排序: eN-lz_..7
S\W&{+3
package org.rut.util.algorithm.support; t2#zQ[~X!
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import org.rut.util.algorithm.SortUtil; 8npjQ;%4>
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/** QIu!o,B
* @author treeroot %tZ[wwt
* @since 2006-2-2 ;7bY>zc(w
* @version 1.0 /*hS0xN*
*/ 7,,#f&jP
public class ImprovedQuickSort implements SortUtil.Sort { ~_W>ND
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private static int MAX_STACK_SIZE=4096; sT+\
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private static int THRESHOLD=10; ?J's>q^X
/* (non-Javadoc) #u$ Z/,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A^@,Ha
*/ VQHQvFRZ)
public void sort(int[] data) { GL8 N!,
int[] stack=new int[MAX_STACK_SIZE]; B6"pw0
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int top=-1; of>}fJ_p
int pivot; H'wh0K(
int pivotIndex,l,r; 6I~{~YvB"
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stack[++top]=0; e3x;(@j
stack[++top]=data.length-1; 73tWeZ8rvx
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while(top>0){ *tL1t\jY
int j=stack[top--]; +<W8kb
int i=stack[top--]; ]_&pIBp
tqT-9sEXX.
pivotIndex=(i+j)/2; egy#8U)Z
pivot=data[pivotIndex]; FN29 5:Iuw
(h>+ivf|
SortUtil.swap(data,pivotIndex,j); WDQw)EUl&
u}BN)%`B
file://partition <]kifiN#
l=i-1; eKek~U&
r=j; $,#,yl ol
do{ ?*A"#0
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "RM vWuNt
SortUtil.swap(data,l,r); u@$pOLI
} :R9 DJh\
while(l SortUtil.swap(data,l,r); NZ?| #53
SortUtil.swap(data,l,j); :h)A/k_
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if((l-i)>THRESHOLD){ Trwk9 +
stack[++top]=i; M}W};~V2ng
stack[++top]=l-1; }t9A#GOz
} +yYSp8>
if((j-l)>THRESHOLD){ 1[r;
stack[++top]=l+1; }^ G&n';J
stack[++top]=j; Dt8wd,B
} Zfn390 _
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} =| M[JPr
file://new InsertSort().sort(data); >!|(n@
insertSort(data); <6)
w
} {ei,>5K
/** Je~d/,^WU
* @param data ~'2im[f J
*/ &.t|&8-
private void insertSort(int[] data) { POCF T0R}
int temp; hV4\#K[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lj o^ 2
} Q&Ox\*sMK
} (" +/ :
} ]kd )j
L?5OWVX!v
} !.ot&EbE
wf8GH}2A
归并排序: 2o5v{W
}uE8o"q
package org.rut.util.algorithm.support; 044*@a5f
j!H\hj/]
import org.rut.util.algorithm.SortUtil; \Ow-o0
HLy}ta\
/** tT;=l[7%
* @author treeroot F+@E6I'g
* @since 2006-2-2 K$..#]\TM
* @version 1.0 "A_WU|
*/ @9QtK69
public class MergeSort implements SortUtil.Sort{ 3=r8kh7,
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/* (non-Javadoc) r4~Bn7j2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z Tx~+'(
*/ Hop$w
public void sort(int[] data) { 'sL>U$(
int[] temp=new int[data.length]; U$`)|/8
mergeSort(data,temp,0,data.length-1); Lw]:/x
} A2b
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Hiz e
m!
private void mergeSort(int[] data,int[] temp,int l,int r){ !j)H!|R
int mid=(l+r)/2; }V3p <
if(l==r) return ; C'hI{4@P
mergeSort(data,temp,l,mid); $+<X 1
mergeSort(data,temp,mid+1,r); *a@pZI0'
for(int i=l;i<=r;i++){ w49Wl>M
temp=data; d{f3R8~Q.
} =>hq0F4[;
int i1=l; $;_'5`xs
int i2=mid+1; &
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for(int cur=l;cur<=r;cur++){ PiZt?r?5w|
if(i1==mid+1) @\_tS H
data[cur]=temp[i2++]; hltH{4
else if(i2>r) buRXzSR
data[cur]=temp[i1++]; \K)"@gdW
else if(temp[i1] data[cur]=temp[i1++]; zVs_|x="
else L;xc,"\3
data[cur]=temp[i2++]; GG\]}UjX
} #Xri%&~
} MjG=6.J|`
9o P8| <+
} O!zH5
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改进后的归并排序: HB\y [:E
ASAz<H$
package org.rut.util.algorithm.support; #GK&{)$
v I]|
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import org.rut.util.algorithm.SortUtil; A5Yfm.Jy
.*D~ .!
/** m4ovppC
* @author treeroot QQ97BP7W
* @since 2006-2-2 >E?626*
* @version 1.0 [e ;K$
*/ G3 #c
public class ImprovedMergeSort implements SortUtil.Sort { GS~jNZx
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private static final int THRESHOLD = 10; m$A|Sx&sG$
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/* }MrRsvN
* (non-Javadoc) aD3'gc,l
* J}KATpHs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hti)<#f
*/ 52K3N^RgR
public void sort(int[] data) { of8/~VO
int[] temp=new int[data.length]; c^UG}:Y
mergeSort(data,temp,0,data.length-1); rayC1#f
} _i:yI-jA
+WK!}xZR
private void mergeSort(int[] data, int[] temp, int l, int r) { 2@1A,
int i, j, k; HlPf
int mid = (l + r) / 2; +D`IcR-x
if (l == r) .!,T>:R
return; #=5/D@
if ((mid - l) >= THRESHOLD) Am!$\T%2
mergeSort(data, temp, l, mid); &BCl>^wn}
else c&AA< 6pkv
insertSort(data, l, mid - l + 1); O|#^ &d
if ((r - mid) > THRESHOLD) a~7`;Ar
mergeSort(data, temp, mid + 1, r); S!2M?}LU
else *xM4nUu<~
insertSort(data, mid + 1, r - mid); yu<sd}@
br>"96A1l
for (i = l; i <= mid; i++) { E*.D_F
temp = data; _%;$y5]v
} OYgD9T.8^
for (j = 1; j <= r - mid; j++) { mE%H5&VSI
temp[r - j + 1] = data[j + mid]; m/JpYv~
} EP'2'51
int a = temp[l]; B:a&)Lwp0
int b = temp[r]; %[-D&flKC
for (i = l, j = r, k = l; k <= r; k++) { ^4O1:_|G
if (a < b) { 4At%{E
data[k] = temp[i++]; Obrv5%'
a = temp; Q~#udEajI
} else {
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data[k] = temp[j--]; 65\'(99yU
b = temp[j]; BE:HO^-.1
} 0tC+?
} uYhm
F p
} {XC# -3O
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/** nxKV7d@R
* @param data O2q`2L~
* @param l F# y5T3(P
* @param i hoD (G X
*/ ZTVX5"#Q
private void insertSort(int[] data, int start, int len) { 4W*52*'F,
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); TPt<(-}W
} /^G1wz2
} g[0b>r7
} `!kOyh:X
} *@S:f"i
PP.QfY4
堆排序: R^<li;Km
CbVU z<
package org.rut.util.algorithm.support; /w^}(IJ4
p2GkI/6)uu
import org.rut.util.algorithm.SortUtil; =66dxU?}
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/** ?V4?r2$c
* @author treeroot (q59cA w~X
* @since 2006-2-2 f6j;Y<}' g
* @version 1.0 93$'PwWgiF
*/ 1\=)b< y
public class HeapSort implements SortUtil.Sort{ C,P>7
M^AwOR7<
/* (non-Javadoc) 3E$M{l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %(MaH
*/ 6.ASLH3#
public void sort(int[] data) { a"EX<6"
MaxHeap h=new MaxHeap(); |77.Lqqy,
h.init(data); L%}k.)yev
for(int i=0;i h.remove(); zXx H aM
System.arraycopy(h.queue,1,data,0,data.length); d`5xd@p
} KaNi'=nW
n#Q ;bSw
private static class MaxHeap{ O; 7`*}m
?{NP3
void init(int[] data){ "-88bF~
this.queue=new int[data.length+1]; y4PR&^l?g
for(int i=0;i queue[++size]=data; 'c*Q/C;
fixUp(size); ~,WG284
} eRKuy l
} LuM:dJ
rU=qr&f"B
private int size=0; brx
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zc01\M
private int[] queue; J]yUjnQ[h
-~\R.<+
public int get() { N DZ :`D
return queue[1]; 1@rI4U@D
} v;AsV`g
}:<`L\8q\
public void remove() {
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s4
SortUtil.swap(queue,1,size--); {4J:t_<nKO
fixDown(1); ecDni>W
} V9&7K65-1
file://fixdown <ZcJC+k
private void fixDown(int k) { p2 V8{k
int j; 2$?bLvk
while ((j = k << 1) <= size) { o@*eC L=
if (j < size %26amp;%26amp; queue[j] j++; @/FE!6 |O
if (queue[k]>queue[j]) file://不用交换 y.(Yh1
break; iZ}Afj
SortUtil.swap(queue,j,k); KX D&FDkF
k = j; M3P\1
} yB0xa%
} 3tzb@T
private void fixUp(int k) { .sI*\@w.
while (k > 1) { VPW@y
int j = k >> 1; 7DZxrVw
if (queue[j]>queue[k]) :FB-GNd
break; w.Cw)#N
SortUtil.swap(queue,j,k); qWX%[i%
k = j; 7iMBDkb7
} zGzeu)d
} N^</:R
5x856RQ'
} nwuH:6~"
eB%hP9=:x
} XrP'FLY o
HYU-F_|N=
SortUtil: vP6NIcWC3
t|-TG\Q X
package org.rut.util.algorithm; t6u>_She
:5|'C
import org.rut.util.algorithm.support.BubbleSort; R9XISsM^
import org.rut.util.algorithm.support.HeapSort; eajctkzj
import org.rut.util.algorithm.support.ImprovedMergeSort; )45~YDS;t
import org.rut.util.algorithm.support.ImprovedQuickSort; }
DQ<YF+
import org.rut.util.algorithm.support.InsertSort; ?+Gc.lU
import org.rut.util.algorithm.support.MergeSort; >=Bl/0YH
import org.rut.util.algorithm.support.QuickSort; lw+Y_;
import org.rut.util.algorithm.support.SelectionSort; ASGV3r(
import org.rut.util.algorithm.support.ShellSort; {zzc/!|
U}f"a!
/** DBTeV-G9~R
* @author treeroot OM,Dy&Y
* @since 2006-2-2 h0**[LDH
* @version 1.0 *rKj%Me
*/ <"/b 5kc
public class SortUtil { N;Hoi8W
public final static int INSERT = 1; >A&D/kMO
public final static int BUBBLE = 2; @}9*rWJIE
public final static int SELECTION = 3; P:D@5
public final static int SHELL = 4; qZQB"Q.*
public final static int QUICK = 5; , e^&,5b
public final static int IMPROVED_QUICK = 6; ~dc
o
public final static int MERGE = 7; 9;2{=,
public final static int IMPROVED_MERGE = 8; hA=.${uIO
public final static int HEAP = 9; WO;2=[#O;
lU?8<X
public static void sort(int[] data) { Q9T/@FX
sort(data, IMPROVED_QUICK); `r#]dT[g
} hk*@<ff
private static String[] name={ 1fgO3N
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BjX*Gm6l
}; ,4W~CkLD
%u=b_4K"j
private static Sort[] impl=new Sort[]{ kPRG^Ox8e
new InsertSort(), 6&oaxAp<s
new BubbleSort(), s!73To}>
new SelectionSort(), :O?+Ywn
new ShellSort(), UP<B>Y1a
new QuickSort(), \7V[G6'{
new ImprovedQuickSort(), Sb QM!Q
new MergeSort(), uuaoBf
new ImprovedMergeSort(), ?uAq goCl
new HeapSort() A4K8DP
}; y26?>.!
gn-@OmIs
public static String toString(int algorithm){ hl}iw_e
return name[algorithm-1]; FTgqE@
} $sILCn
k'6x_
G
public static void sort(int[] data, int algorithm) { x*'2%3C~
impl[algorithm-1].sort(data); =w !>/#U
} 9 AWFjoXl"
zrDcO~w
public static interface Sort { =Ju%3ptH0
public void sort(int[] data); 5,_DM
} JnE\z*NB
y.>1r7
public static void swap(int[] data, int i, int j) { 1S{AGgls5
int temp = data; 62.)fCQ^
data = data[j]; J;DTh ]z?:
data[j] = temp; bVxbQ$
} !kW~s_gUb*
} ;$.^