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。 1_!*R]a q
插入排序: !h{qO&ZH=
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package org.rut.util.algorithm.support; SqTO~zGC
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import org.rut.util.algorithm.SortUtil; w3c[t~R8
/** DJ;G0*
* @author treeroot INsc!xOQ
* @since 2006-2-2 e;56}w
* @version 1.0 h84}lxT^]
*/ ^PfFW
public class InsertSort implements SortUtil.Sort{ C$xU!9K[+
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/* (non-Javadoc) e7ixi^Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rE-Xv.
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*/ CEE`nn
public void sort(int[] data) { utC]GiR
int temp; ;-47d ^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 69 R8#M
} S,EXc^A7
} ;$=`BI)
} B i?DmrH
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} Hm4:m$=p4
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冒泡排序: J.mEOo!>
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package org.rut.util.algorithm.support; tB4- of3+
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import org.rut.util.algorithm.SortUtil; Zg%U4m:
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/** ~oh=QakW
* @author treeroot -@-cG\{
* @since 2006-2-2 .xuLvNyQr
* @version 1.0 M;={] w@n
*/ b2.
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public class BubbleSort implements SortUtil.Sort{ ]L%qfy4
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/* (non-Javadoc) aHe/MucK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lqa.Nj
*/ a1B_w#?8
public void sort(int[] data) { 0n|op:]BHM
int temp; bN@V=C3
for(int i=0;i for(int j=data.length-1;j>i;j--){ &Jv j@,>$d
if(data[j] SortUtil.swap(data,j,j-1); wX" 6 S:
} .R;HH_
} UHF.R>Ry
} 8*I43Jtlf,
} ?h"+q8&
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} &!vJ3:
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选择排序: abUvU26t
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package org.rut.util.algorithm.support; J5}-5sV^
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import org.rut.util.algorithm.SortUtil; z_~f/
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/** eyy{z;D8r
* @author treeroot u[dR*o0'
* @since 2006-2-2 oJbD|m
* @version 1.0 wIz<Y{HA=
*/ .a1WwI
public class SelectionSort implements SortUtil.Sort { u{yENZ^P
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/*
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* (non-Javadoc) hS}?"ST|
* [WnX'R R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A!No:?S
*/ }:7'C. ."
public void sort(int[] data) { RxY
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int temp; -mOSB(#bo
for (int i = 0; i < data.length; i++) { "]Wrir?l
int lowIndex = i; +^YXqOXU
for (int j = data.length - 1; j > i; j--) { O E0w/{
if (data[j] < data[lowIndex]) { T>e!DOW;
lowIndex = j; uOc:^
} `Lb^!6`)
} DcE)6z#
SortUtil.swap(data,i,lowIndex); fDhV
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} U0q{8 "Pl
} q3adhY9|)0
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} W#E`h
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Shell排序: u;p{&\(]
s3kHNDdC
package org.rut.util.algorithm.support; ;3OQgKI
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import org.rut.util.algorithm.SortUtil; ~UX@%0%)N
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/** ^AdHP!I
* @author treeroot )1wC].RFYm
* @since 2006-2-2 4eK!1|1
* @version 1.0 im|(
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*/ #\[h.4i
public class ShellSort implements SortUtil.Sort{ a,tzt
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/* (non-Javadoc) MWl?pG!Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q 9lz
*/ KSnU;B6w>
public void sort(int[] data) { kg?[
for(int i=data.length/2;i>2;i/=2){ R7}=k)U?d@
for(int j=0;j insertSort(data,j,i); e3,TY.,Ay
} %^f!= *
} xDv$z.=Y
insertSort(data,0,1); 5A
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} [74HUw>
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/** zgRZgVj
* @param data !|;^
* @param j M3ihtY
* @param i l{ja2brX
*/ 6&_"dg"
private void insertSort(int[] data, int start, int inc) { PnkJWl<S
int temp; <0T5W#H`D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4$.$j=Ct."
} $mOVo'2
} 4^cDp!8
} g"aWt%
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} @TF^6)4f
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快速排序: !D6
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package org.rut.util.algorithm.support; @zo}#.g
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import org.rut.util.algorithm.SortUtil; 2(M^8Bl
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/** Xmr|k:z
* @author treeroot uvR9BL2=
* @since 2006-2-2 JLo'=(
* @version 1.0 ,PC'xrEo
*/ XCr\Y`,Z@
public class QuickSort implements SortUtil.Sort{ gv)F`uRWA
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/* (non-Javadoc) &AM<H}>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7R9.g6j
*/ vU,AOK[l{
public void sort(int[] data) { kHLpa/A
quickSort(data,0,data.length-1); zj:=
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} p|fSPSz
private void quickSort(int[] data,int i,int j){ 8>^(-ca_
int pivotIndex=(i+j)/2; C><]o
file://swap .,Qj3
SortUtil.swap(data,pivotIndex,j); aDEz|>q
> SRUC
int k=partition(data,i-1,j,data[j]); CR8a)X4j#
SortUtil.swap(data,k,j); Z3jh-{ 0
if((k-i)>1) quickSort(data,i,k-1); }*eiG
if((j-k)>1) quickSort(data,k+1,j); |m{Q_zAB
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} 4#hDt^N~
/** M]9oSi
* @param data #m>Rt~(,S
* @param i :lf;CT6$
* @param j OSP#FjH
* @return ~DY5`jV
*/ d'j8P
private int partition(int[] data, int l, int r,int pivot) { CUJP"u>8M
do{ :eIPPh|\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &XG k
SortUtil.swap(data,l,r); kkWqP20q
} 1K(a=o[Ce
while(l SortUtil.swap(data,l,r); S}fU2Wi
return l; &G63ReW7 @
} "s-e)svB
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} 9gjI;*(z1
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改进后的快速排序: R}~p1=D
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package org.rut.util.algorithm.support; fpMnA
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import org.rut.util.algorithm.SortUtil; epz'GN]V
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/** Q
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* @author treeroot -anLp8G*
* @since 2006-2-2 BPf;!.
* @version 1.0 n0nf;E
*/ `v2]Jk<
public class ImprovedQuickSort implements SortUtil.Sort { 4a'O#;ho
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private static int MAX_STACK_SIZE=4096; ?Q$LIoR
private static int THRESHOLD=10; /48W]a}JS
/* (non-Javadoc) 2 uuI_9 "^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >y
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*/ 2kv%k3Q{
public void sort(int[] data) { D+$ k
int[] stack=new int[MAX_STACK_SIZE]; kk`BwRh)d;
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int top=-1; /cmnX'z
int pivot; $^&SEz
int pivotIndex,l,r; _W@SCV)yH
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stack[++top]=0; 3,`.$
stack[++top]=data.length-1; ,.#
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while(top>0){ 9C$#A +~C
int j=stack[top--]; M~&|-Hm
int i=stack[top--]; ONx|c'0g
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pivotIndex=(i+j)/2; ]U :1NC"
pivot=data[pivotIndex]; p(2j7W-/
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SortUtil.swap(data,pivotIndex,j); 6k#H>zY,
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file://partition #xWC(*Ggp
l=i-1; $Cu/!GA4.>
r=j; +n1jP<[<N
do{ ^iaeY
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vBUl6EmWu
SortUtil.swap(data,l,r); OtopA)
} ?nm:e.S+?
while(l SortUtil.swap(data,l,r); !U02>X
SortUtil.swap(data,l,j); >M` swEj
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if((l-i)>THRESHOLD){ )G(6=l*
stack[++top]=i; YK#
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stack[++top]=l-1; #=WDJT:
} pv;c<NQ'1
if((j-l)>THRESHOLD){ gto@o\&=
stack[++top]=l+1; S}"?#=Q.%O
stack[++top]=j; niO(>
} Q:LyD!at
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} ^q"wd?((h
file://new InsertSort().sort(data); qA- ya6
insertSort(data); -t9oL3J
} &}Y_EHj}
/** %iPu51+=
* @param data B3I\=
*/ 0F'75
private void insertSort(int[] data) { CK
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int temp; {GF>HHQb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^qpa[6D6x
} vOYcS$,^X%
} B0c} 5V
} '-#6;_ i<
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} }?P~qJ|1
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归并排序: c ;3bX6RD*
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package org.rut.util.algorithm.support; /p,D01Ws}(
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import org.rut.util.algorithm.SortUtil; hp(n;(OR
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/** X.0/F6U
* @author treeroot dE5DH~ldV
* @since 2006-2-2 !DnG)4#
* @version 1.0 KmV>tn BQ
*/ *8p\.za1
public class MergeSort implements SortUtil.Sort{ ^_<>o[qE
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/* (non-Javadoc) u)P$xkf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3&*0n^g
*/ $52Te3n
public void sort(int[] data) { *f8,R"]-g
int[] temp=new int[data.length]; C!w@Naj
mergeSort(data,temp,0,data.length-1); T4
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} "xdJ9Z-B
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3w )S=4lB
int mid=(l+r)/2; '4sT+q
if(l==r) return ; BO\l>\)Ir
mergeSort(data,temp,l,mid); :Puv8[1i
mergeSort(data,temp,mid+1,r); o*n""m
for(int i=l;i<=r;i++){ Fc}wuW
temp=data; 2W
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} 9\)NFZ3Mz
int i1=l; 8O{]ML
int i2=mid+1; Kw'Dzz%kN
for(int cur=l;cur<=r;cur++){ "!)8bTW
if(i1==mid+1) ,|I\{J #C
data[cur]=temp[i2++]; \Y9=dE}
else if(i2>r) X_
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data[cur]=temp[i1++]; ^OG^%
x"
else if(temp[i1] data[cur]=temp[i1++]; @n(=#Q3
else mUy/lo'4
data[cur]=temp[i2++]; Ao96[2U6
} f.jAJ; N>
} 6o;lTOes
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} ;_j\E(^%
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改进后的归并排序: w& RpQcV
BHj]w*Ov
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; w]yLdfi!
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/** \)BKuIP
* @author treeroot @=wAk5[IN
* @since 2006-2-2 54F([w
* @version 1.0 8zj09T[
*/ l^`!:BOtR
public class ImprovedMergeSort implements SortUtil.Sort { k9 *0xukJ
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private static final int THRESHOLD = 10; =X&h5;x'
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/* 6lT'%ho}B
* (non-Javadoc) FA{I
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* uy\YJ.WMQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x6DH0*[.
*/
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public void sort(int[] data) { $Z28nPd/
int[] temp=new int[data.length]; }Tc)M_
mergeSort(data,temp,0,data.length-1); `"ie57-
} A94VSUDA:
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private void mergeSort(int[] data, int[] temp, int l, int r) { [JAd1%$3
int i, j, k; xC;$/u%'
int mid = (l + r) / 2; n;rOH[P
if (l == r) F$ h/k^
return; McsqMI6
if ((mid - l) >= THRESHOLD) * n!0
mergeSort(data, temp, l, mid); O1#rCFC|y
else hChM hc
insertSort(data, l, mid - l + 1); ;
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if ((r - mid) > THRESHOLD) WZO#(eO`
mergeSort(data, temp, mid + 1, r); [/#n+sz.A
else %7|qnh6
insertSort(data, mid + 1, r - mid); 3b&W=1J
c7rYG]
for (i = l; i <= mid; i++) { D 0n2r
temp = data; &tRnI$D
} 3F.O0Vz
for (j = 1; j <= r - mid; j++) { Gj)Qw6
temp[r - j + 1] = data[j + mid]; d'3'{C|kk
} :&:>sd(QD
int a = temp[l]; Rkm7"dO0
int b = temp[r]; A`N;vq,
for (i = l, j = r, k = l; k <= r; k++) { _^'k_a
if (a < b) { =kc{ Q@Dk
data[k] = temp[i++]; Cza)s
a = temp; '6WDs]\
} else { mmjB1L
data[k] = temp[j--]; 9MYt4
b = temp[j]; dJ&s/Z/>E
} >y8Z{ALQ5
} 3o^V$N.
} 57MoO
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/** 7I44BC*R~
* @param data E
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* @param l $\K(EBi#G
* @param i /gdo~
*/ & {/u>,
private void insertSort(int[] data, int start, int len) { fzio8mKVX
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +_}2zc4
} B+Bv(p
} RI*%\~6t?
} L"-&B$B:
} ./g#<
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堆排序: '{u#:TTj
kg@J.
package org.rut.util.algorithm.support; O71rLk;
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import org.rut.util.algorithm.SortUtil; 0ND7F
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/** ixH7oWH#
* @author treeroot 'Hia6<m3
* @since 2006-2-2 a$|u!_)!h
* @version 1.0 :OZhEBL&b
*/ U{}7:&As
public class HeapSort implements SortUtil.Sort{ Z"^@B2v
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/* (non-Javadoc) E<4}mSn)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .KLuGb3JJ
*/ lKwcT!Q4
public void sort(int[] data) { W P&zF$
MaxHeap h=new MaxHeap(); "|%fAE
h.init(data); E4.IS=4S
for(int i=0;i h.remove(); [eN{Ft0x
System.arraycopy(h.queue,1,data,0,data.length); ,5?MRqCM
} W!^=)Qs
#e=^[E-yE
private static class MaxHeap{ !58JK f
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void init(int[] data){ CYu8J@(\~g
this.queue=new int[data.length+1]; eC39C2q\
for(int i=0;i queue[++size]=data; =+L>^w#6=
fixUp(size); R{B~No w3
} U,S286
} |Wgab5D>V
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private int size=0; ZM.g+-9
# 0(\s@r.
private int[] queue; }>:X|4]
TK>}$.c%+
public int get() { 2fk
return queue[1]; T{M:)}V
} F&~vD
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public void remove() { *~L]n4-
SortUtil.swap(queue,1,size--); t*#&y:RG
fixDown(1); X9j+$X\j
} =R"tnjR
file://fixdown N-|Jj?c
private void fixDown(int k) { bW|y -GM
int j; m t^1[
while ((j = k << 1) <= size) { QMY4%uyY!
if (j < size %26amp;%26amp; queue[j] j++; 1hWz%c|
if (queue[k]>queue[j]) file://不用交换 u\wd<<I']
break; iE`aGoA
SortUtil.swap(queue,j,k); l :"*]m7o_
k = j; 7KIQ)E'kG|
} :[39g;V}c
} ZB%~>
private void fixUp(int k) { T1&H!
while (k > 1) { :JIPF=]fc
int j = k >> 1; t} M3F-NZ
if (queue[j]>queue[k]) J|IDnCK
break; do,X{\
SortUtil.swap(queue,j,k); LfApVUm
k = j; S@)bl
} XEEbmIO*<9
} <hbbFL}|%
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} buXG32;
F! e`i-xt
} TbVL71c
^'4uTbxP_!
SortUtil: m~eWQ_a]C@
bl<7[J.
package org.rut.util.algorithm; z;fSd
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import org.rut.util.algorithm.support.BubbleSort; lz 6 Aj
import org.rut.util.algorithm.support.HeapSort; ^aCYh[=
import org.rut.util.algorithm.support.ImprovedMergeSort; nL!@#{z
import org.rut.util.algorithm.support.ImprovedQuickSort; B vc=gW
import org.rut.util.algorithm.support.InsertSort; %5gJ6>@6Z
import org.rut.util.algorithm.support.MergeSort; -pu\p-Z
import org.rut.util.algorithm.support.QuickSort; tW>R 16zq
import org.rut.util.algorithm.support.SelectionSort; 2A|6o*s"
import org.rut.util.algorithm.support.ShellSort; 9(WC#-,
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/** 9Q/!%y%5
* @author treeroot .*blM1+6i/
* @since 2006-2-2 1_C6KS
* @version 1.0 ]:s|.C%q I
*/ [#Vr)\n
public class SortUtil { pQ{t< >
public final static int INSERT = 1; w"i Zn
public final static int BUBBLE = 2; I+t38un%
public final static int SELECTION = 3; T}[vfIJD
public final static int SHELL = 4; C>dJ:.K%H
public final static int QUICK = 5; E5{)d~q
public final static int IMPROVED_QUICK = 6; Dt.Wb&V_w
public final static int MERGE = 7; /nFw
public final static int IMPROVED_MERGE = 8; X)OP316yx
public final static int HEAP = 9; Qu _T&
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public static void sort(int[] data) { o7XRa]O
sort(data, IMPROVED_QUICK); #UD
} DG?\6Zh
private static String[] name={ TWEqv<c
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;@
X
}; Ue:T3jp3%
q"<-
private static Sort[] impl=new Sort[]{ qXGLv4c`Q
new InsertSort(), )\Q|}JV
new BubbleSort(), H>iZVE
new SelectionSort(), nV*sdSt
new ShellSort(), iQC&d_#
new QuickSort(), *8H;KGe=
new ImprovedQuickSort(), ix @rq#
new MergeSort(), RgA4@J#
new ImprovedMergeSort(), 7`@?3?
new HeapSort() 0\nhg5]?
}; F$p*G][
z.HNb$;
public static String toString(int algorithm){ _
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return name[algorithm-1]; RpP[ymMZJ
} k.[) R@0%
Bjj^!T/#
public static void sort(int[] data, int algorithm) { vXQmEIm
impl[algorithm-1].sort(data); <#
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} f+Li'?
0]W]#X4A
public static interface Sort { +STzG/9#
public void sort(int[] data); 72vGfT2HtZ
} =e-aZ0P
,ri--<
public static void swap(int[] data, int i, int j) { -L?%
o_
int temp = data; 8z8SwWS?
data = data[j]; .OS?^\
data[j] = temp; )}\@BtcjA]
} /~cL L
} VhI IW"1