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。 "AAzBWd/
插入排序: v;r!rZX
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package org.rut.util.algorithm.support; LZ"yMnhOf
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import org.rut.util.algorithm.SortUtil; eb uR-9
/** Ki"o0u
* @author treeroot $xWebz0
* @since 2006-2-2 :())%Xu3
* @version 1.0 qg(rG5kD@
*/ h)vRvfcmY
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) xK3
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0."TSe83\
*/ h.`U)6*?&N
public void sort(int[] data) { XehpW}2\
int temp; (zm5
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <`~zKFUQ[
} /%fa_+,|-
} )Apg
} @y#QHJ.j
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} Hvm+Tr2@
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冒泡排序: :-I~-Yj
vWM3JH~a6
package org.rut.util.algorithm.support; FzDZ<dJ
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import org.rut.util.algorithm.SortUtil; 2rr}5i)r|
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/** Q|^TR__
* @author treeroot 7d7"^M
* @since 2006-2-2 1b6ox6
* @version 1.0 ~m]sJpW<"
*/ E27N1J+1
public class BubbleSort implements SortUtil.Sort{ ;U
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/* (non-Javadoc) LOD'iiH6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kg>Ymo.
*/ | Q
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public void sort(int[] data) { 3Mnm2*\
int temp; k#4%d1O}
for(int i=0;i for(int j=data.length-1;j>i;j--){ q*<Fy4j
if(data[j] SortUtil.swap(data,j,j-1); NbD"O8dL~E
} 6Q&*V7EO
} "]j GCo>9
} =-ky%3:`@
} y11/:|
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} J|orvnkK
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选择排序: Al^n&Aa+\
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package org.rut.util.algorithm.support; \~(ww3e
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import org.rut.util.algorithm.SortUtil; _d8k[HAJ|
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/** [w%MECTe
* @author treeroot 8-N8v
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* @since 2006-2-2 RaKfYLw
* @version 1.0 Q9lw~"
*/ %f{1u5+5
public class SelectionSort implements SortUtil.Sort { d2Z kchf
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/* H$^b.5K
* (non-Javadoc) 9I a4PPEH1
* ?G5JAG`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .b4_O
CGg
*/ 9.KOrg5}L
public void sort(int[] data) { :q V}v2
int temp; 1_Um6vS#
for (int i = 0; i < data.length; i++) { TJ:B_F*bSk
int lowIndex = i; OHqc,@a;+
for (int j = data.length - 1; j > i; j--) { $J/Z~(=JT
if (data[j] < data[lowIndex]) { $c-h'o
lowIndex = j; dbkkx1{>Y
} Q0K4_iN)&
} 00') Ol&
SortUtil.swap(data,i,lowIndex); wW3fsXu
} gr'M6&>
} Dt~Jx\\
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} &%~2Wm
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Shell排序: |~mi6 lJ6
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package org.rut.util.algorithm.support; ZQT14. $L
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import org.rut.util.algorithm.SortUtil; [sC]<2 r
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/** /B$"fxFf
* @author treeroot ckqU2ETpD}
* @since 2006-2-2 G?LPj*=$?
* @version 1.0 %}+!%A.3
*/ 8K!
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public class ShellSort implements SortUtil.Sort{ kL.JrbM"
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/* (non-Javadoc) &qki
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z!TLWX"
*/ `~Eo;'( +^
public void sort(int[] data) { Le9^,B@Pb
for(int i=data.length/2;i>2;i/=2){ m*L*# ZBS
for(int j=0;j insertSort(data,j,i);
* P_
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} DLYk#d: q?
} 0]l _qxv
insertSort(data,0,1); kji*7a?y
} QE&rpF7l{
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/** +/60$60[z
* @param data 4h>Dpml
* @param j Zx(VwB2
* @param i Egv (n@1
*/ 8LP L4l
private void insertSort(int[] data, int start, int inc) { _ x&Y'X|
int temp; 8(UUc>g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ylF%6!V}4V
} ':8yp|A|
} >Vr+\c
} zbdmz
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} B./Lp_QK
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快速排序: Hm|8ydNs
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package org.rut.util.algorithm.support; i]8HzKuiW
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import org.rut.util.algorithm.SortUtil; !/G2vF"
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/** @Otom'O
* @author treeroot oD]tHuDa
* @since 2006-2-2 cq`v8
* @version 1.0 B&&:A4
*/ w66iLQ\@
public class QuickSort implements SortUtil.Sort{ _}.BZ[i
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/* (non-Javadoc) V6Kw71'9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G(F}o]
*/ q/,>UtRr
public void sort(int[] data) { 53d8AJ_@X
quickSort(data,0,data.length-1); Qvh: hkR
} y^:!]-+
private void quickSort(int[] data,int i,int j){ WpE\N0Yg
int pivotIndex=(i+j)/2; (J8(_MF
file://swap mG2*s ^$
SortUtil.swap(data,pivotIndex,j); !6:kJL}U
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int k=partition(data,i-1,j,data[j]); won;tO]\;@
SortUtil.swap(data,k,j); m@)~.E
if((k-i)>1) quickSort(data,i,k-1); s/+@o:
if((j-k)>1) quickSort(data,k+1,j); )(`I1"1
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} F@Qzh
/** RnV
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* @param data E7-il;`cKn
* @param i g$<Sh.4A
* @param j Md_S};!QN6
* @return v'(p."g
*/ n>?o=_|uR
private int partition(int[] data, int l, int r,int pivot) { I!?-lI@(
do{ UU')V
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5Jd(&k8%
SortUtil.swap(data,l,r); To1 .U)do
} B2QttcJ
while(l SortUtil.swap(data,l,r); d 6 t#4!
return l; ?yop#tjCbY
} !, Y1FC
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} $8gj}0}eH
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改进后的快速排序: #?8dInu>
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package org.rut.util.algorithm.support; `,|"rn#S
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import org.rut.util.algorithm.SortUtil; Eb66GXF[
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/** e E:J
* @author treeroot WPT0=Hqp7
* @since 2006-2-2 'E FP/(2J
* @version 1.0
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*/
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public class ImprovedQuickSort implements SortUtil.Sort { UfcQFT{()
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private static int MAX_STACK_SIZE=4096; `6a
private static int THRESHOLD=10; b_2bg>|;
/* (non-Javadoc) gE$D#PZa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xi|T7,\X
*/ c:(Xkzj
public void sort(int[] data) { LUSBRr8
int[] stack=new int[MAX_STACK_SIZE]; k I
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int top=-1; ]t$wK
int pivot; ]E/^(T-O
int pivotIndex,l,r; Dy`;]-b6u
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stack[++top]=0; C;]}Ht:~I
stack[++top]=data.length-1; w1tWyKq
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while(top>0){ ~n9x
,
int j=stack[top--]; j4pxu/2
int i=stack[top--]; }ZaZPB/_}P
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pivotIndex=(i+j)/2; 8$)xxV_zp
pivot=data[pivotIndex]; <r 2$k"*:
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SortUtil.swap(data,pivotIndex,j); 4yy9m8/
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file://partition k# -u!G
l=i-1; })~M}d2LXB
r=j; H!N`hEEj>
do{ hO8~Rg
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ->"Z1
SortUtil.swap(data,l,r); PydU.,^7
} >JOEp0J
while(l SortUtil.swap(data,l,r); +%E)]*Ym
SortUtil.swap(data,l,j); \N3A2L)l
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if((l-i)>THRESHOLD){ j >pv@D
stack[++top]=i; 'P'f`;'_DC
stack[++top]=l-1; 4v[Zhf4JM
} B h<DqN
if((j-l)>THRESHOLD){ 7LotN6H
stack[++top]=l+1; ULT,>S6r
stack[++top]=j; Lp1\vfU<+
} (AIgW
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} |FED<
file://new InsertSort().sort(data); qnO>F^itF
insertSort(data); P:8qmDXo
} cmcR@zv
/** ,M?K3lG\g[
* @param data n^[VN[VC
*/ hiT&QJB` _
private void insertSort(int[] data) { Xzn}gH]
int temp; Pl/}`H:R&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ] Hiw+5n
} V'iT>
} h85kQ^%
} ^}Wk
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}
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归并排序: |~]@hs~
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package org.rut.util.algorithm.support; fVvB8[(;~
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import org.rut.util.algorithm.SortUtil; 1`q>*S](
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/** L]e@./C$
* @author treeroot wg}rMJoG|
* @since 2006-2-2 VRQD
* @version 1.0 LW#$%}
*/ x\K9|_!
public class MergeSort implements SortUtil.Sort{ zd0[f3~
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/* (non-Javadoc) k [eWhdSw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9D`p2cO
*/ \$Q?
public void sort(int[] data) { X%R )
int[] temp=new int[data.length]; D:=Q)Uh0I
mergeSort(data,temp,0,data.length-1); V2oXg
} N2.(0 G
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private void mergeSort(int[] data,int[] temp,int l,int r){ c[zGWF#1>
int mid=(l+r)/2;
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if(l==r) return ; .T*89cEu
mergeSort(data,temp,l,mid); Vg^,Ky,
mergeSort(data,temp,mid+1,r); =@*P})w5.
for(int i=l;i<=r;i++){ z/P^Bx]r
temp=data; p/ au.mc
} hOM#j
int i1=l; pT<}n 9yB5
int i2=mid+1; <!a%GI
for(int cur=l;cur<=r;cur++){ ,/Al'
if(i1==mid+1) ]&_z@Z.i
data[cur]=temp[i2++]; 2*pNIc
else if(i2>r) 8dlhL8#
data[cur]=temp[i1++];
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else if(temp[i1] data[cur]=temp[i1++]; Z" N}f
,
else M-zqD8D
data[cur]=temp[i2++]; I*EHZctH
}
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} d 6=Z=4w
q vGP$g
} |wkUnn4UB8
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改进后的归并排序: g93Hl&
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package org.rut.util.algorithm.support; PwS7!dzH-
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import org.rut.util.algorithm.SortUtil; 0I7 r{T
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/** fDrjR6xV
* @author treeroot 3)3$ L
* @since 2006-2-2 7CSd}@71\
* @version 1.0 R=<uf:ca
*/ ~mk>9Gp
public class ImprovedMergeSort implements SortUtil.Sort { #sb@)Q
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private static final int THRESHOLD = 10; ;GZ/V;S
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/* HC>MCwx=r
* (non-Javadoc) !"bU|a
* , A;wLI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &b=OT%D~FU
*/ gn6 @x
public void sort(int[] data) { #OVS]Asn}
int[] temp=new int[data.length]; pg/SYEvsV
mergeSort(data,temp,0,data.length-1); n7iIY4gZ
} ]_mcJ/6:
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private void mergeSort(int[] data, int[] temp, int l, int r) { 25/M2u?
int i, j, k; :0vKt 6>Sp
int mid = (l + r) / 2;
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if (l == r) bI+ TFOP
return; f_;6uCCO
if ((mid - l) >= THRESHOLD) 1aS66TS3
mergeSort(data, temp, l, mid); +.IncY8C$
else f6JC>Np
insertSort(data, l, mid - l + 1); /m8&E*+T1
if ((r - mid) > THRESHOLD) K yDPD'
mergeSort(data, temp, mid + 1, r); *s (L!+
else 3$h yV{
insertSort(data, mid + 1, r - mid); YV)h"u+@0
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for (i = l; i <= mid; i++) { v<V9Z
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temp = data; V[avV*;3i
} ;)'
for (j = 1; j <= r - mid; j++) { {/q4W; D
temp[r - j + 1] = data[j + mid]; +dJLT}I8M
} +|6 u
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int a = temp[l]; 7|^5E*8/
int b = temp[r]; D0
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for (i = l, j = r, k = l; k <= r; k++) { J:G~9~V^
if (a < b) { S*S@a4lV7
data[k] = temp[i++]; u8Oo@xf0Fr
a = temp; U_
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} else { 3#~w#Q0%
data[k] = temp[j--]; W'f)W4D$6
b = temp[j]; 7(]M`bBH
} ]_y0wLq
} Iv51,0A
} m$80D,3
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/** GCv*a[8?n
* @param data mH5[(?
* @param l fSw6nEXn
* @param i Jpr`E&%I6
*/ 6/l{e)rX2o
private void insertSort(int[] data, int start, int len) { RinaGeim
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zjUT:#(k
} 3FE=?Q
} 3p#BEH<re
} 7$|L%Sk
} 6*%E4#4
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堆排序: 2qe]1B;
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package org.rut.util.algorithm.support; I'a&n}jx
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import org.rut.util.algorithm.SortUtil; ~-K<gT/
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/** ,'^^OLez
* @author treeroot 8w L%(p
* @since 2006-2-2 xe9V'wICp(
* @version 1.0 JF-ew"o<E
*/ Ph/!a6y
public class HeapSort implements SortUtil.Sort{ #SIIhpjA(
H*V Z&{\7
/* (non-Javadoc) ?*: mR|=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1-:{&!
*/ o}VW%G"
public void sort(int[] data) { O\ph!?L
MaxHeap h=new MaxHeap(); 9w08)2$Na
h.init(data);
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for(int i=0;i h.remove(); =b[q<p\
System.arraycopy(h.queue,1,data,0,data.length); oH]"F
} HqKI|^
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private static class MaxHeap{ 3 V{&o,6
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m*
void init(int[] data){ XX;MoE~MM
this.queue=new int[data.length+1]; Q~S3d
for(int i=0;i queue[++size]=data; 6$_//
fixUp(size); 6O#
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} FNB4YZ6
} h Lv_ER?
1@p'><\
private int size=0; )EptyH
jg+q{ ^
private int[] queue; W^Z#_{
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public int get() { $9m>(b/;n
return queue[1]; $TR#-q
} t$yt8#Tk
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public void remove() { ^DWhIxBh
SortUtil.swap(queue,1,size--); +(qs{07A$
fixDown(1); y4Fuh nb>
} "? t@Y
file://fixdown * M,'F^E2
private void fixDown(int k) { p:@JC sH=
int j; 6Lhfb\2?
while ((j = k << 1) <= size) { wS%aN@ay3
if (j < size %26amp;%26amp; queue[j] j++; ^ua8Ya
if (queue[k]>queue[j]) file://不用交换 7m+d;x2
break; q;0QI{:5v
SortUtil.swap(queue,j,k); byB
ESyV!O
k = j; g9K7_T #W
} 4~YPLu
} Z;4pI@u
private void fixUp(int k) { L4?)N&V
while (k > 1) { P6
& _q
int j = k >> 1; s`E^1jC
if (queue[j]>queue[k]) ;\[el<Y)s
break; XBF]|}%
SortUtil.swap(queue,j,k); 1p |}=R
k = j; JZM:R
} pz]T9ol~
} :2_8.+:
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} lmjoSINy
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} G*x"drP
aO'lk
SortUtil: @ a?^2X^
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package org.rut.util.algorithm; ?!$uMKyt
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import org.rut.util.algorithm.support.BubbleSort; t:?8I9d
import org.rut.util.algorithm.support.HeapSort; H*M )<"X
import org.rut.util.algorithm.support.ImprovedMergeSort; !0+!%Nr>J
import org.rut.util.algorithm.support.ImprovedQuickSort; 6IyD7PQ
import org.rut.util.algorithm.support.InsertSort; 5`?'}_[Yj
import org.rut.util.algorithm.support.MergeSort; 6)B6c. 5o
import org.rut.util.algorithm.support.QuickSort; LQs>[3rK
import org.rut.util.algorithm.support.SelectionSort; O=Cz*j
import org.rut.util.algorithm.support.ShellSort; ?z]hYsy
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/** }h PFd
* @author treeroot ,( ?q
* @since 2006-2-2 qek[p_7
* @version 1.0 D0 f.XWd
*/ V&75n.L
public class SortUtil { `?H yDny
public final static int INSERT = 1; :"pA0oB
public final static int BUBBLE = 2; ,iQRf@#W_b
public final static int SELECTION = 3; uN)o|7
public final static int SHELL = 4; 6zGM[2
public final static int QUICK = 5; +v7mw<6s
public final static int IMPROVED_QUICK = 6; fA k]]PU
public final static int MERGE = 7; #_b
U/rk)*
public final static int IMPROVED_MERGE = 8; ?^<
E#2a
public final static int HEAP = 9; c[I4'x
FYs-vW {
public static void sort(int[] data) { <+tSTc4>r
sort(data, IMPROVED_QUICK); l; ._
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} T|{1,wP
private static String[] name={ &H`A S6
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S-$N! G~!
}; \:To>A32
$z>L $,c>
private static Sort[] impl=new Sort[]{ b,8\i|*!f
new InsertSort(), gC+PpY#2h
new BubbleSort(), ]hPu
new SelectionSort(), %)|pUa&
new ShellSort(), Lcx)wof
new QuickSort(), Bv)^GU&
new ImprovedQuickSort(), r ^m8kYezQ
new MergeSort(), zree}VqD;5
new ImprovedMergeSort(), O_M2Axm
new HeapSort() j!It1B
}; !m*
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public static String toString(int algorithm){ E=-ed9({:
return name[algorithm-1]; 7j
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} t8}R?%u
q$|Wxnz
public static void sort(int[] data, int algorithm) { *u i!|;
impl[algorithm-1].sort(data); I:ag}L8`
} _5nS!CN
*Va ;ra(V2
public static interface Sort { Hz*5ZIw
public void sort(int[] data); eNwF<0}
} i; qb\
4Pbuv6`RK
public static void swap(int[] data, int i, int j) { kXfTNMb
int temp = data; 6 cF~8
data = data[j]; Cj,Yy
data[j] = temp; {Tps3{|wt
} W7F1o[
} p>g5WebBN