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。 0;r+E*`DA
插入排序: (F~eknJ
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package org.rut.util.algorithm.support; \MX>=
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import org.rut.util.algorithm.SortUtil; LYv+Sv
/** ^]AjcctGr
* @author treeroot
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* @since 2006-2-2 !f]F'h8
* @version 1.0 e#SNN-hKsJ
*/ JzCfs<D
public class InsertSort implements SortUtil.Sort{ z`m-Ca>6
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/* (non-Javadoc) k
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d),@&MSN
*/ =i\~][-
public void sort(int[] data) { .\LWV=B
int temp; [m!$01=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qEX59v
} }=;N3Q" #y
} hH`yQGZ
} 5H;* Nj@
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} /Y%) Y
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冒泡排序: .lTU[(qwu
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package org.rut.util.algorithm.support; ,Ix7Yg[
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import org.rut.util.algorithm.SortUtil; jpT!di
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/** =}u;>[3
* @author treeroot Ui'~d(F
* @since 2006-2-2 ;m{[9i`2
* @version 1.0 pBh[F5
*/ J6rXbui$
public class BubbleSort implements SortUtil.Sort{ :G,GHU'/78
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/* (non-Javadoc) u;J9aKD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \d]&}`'4{f
*/ 9F ).i
public void sort(int[] data) { wW]|ElYR=
int temp; oI/@w
for(int i=0;i for(int j=data.length-1;j>i;j--){ *
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if(data[j] SortUtil.swap(data,j,j-1); ?r2Im5N
} I&1h/
} R qOEQ*k
} SL>>]A,E<`
} J rYpZ.Nh
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} ;x|4Tm
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选择排序: l?Bv9k.^?
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package org.rut.util.algorithm.support; ir3iW*5k
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import org.rut.util.algorithm.SortUtil; 1h"0B
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/** VS1gg4tCv
* @author treeroot z| i$eF;x3
* @since 2006-2-2 HC+(FymV
* @version 1.0 $BkdC'D
*/ ,dK% [
public class SelectionSort implements SortUtil.Sort { G2
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/* f.Q?-M
* (non-Javadoc) 0'c<EJ
* =HYMX"s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _av%`bb&z9
*/ bXC;6xZV
public void sort(int[] data) { b>&kL
int temp; FV!
for (int i = 0; i < data.length; i++) { 64hr|v
int lowIndex = i; @fPiGu`L
for (int j = data.length - 1; j > i; j--) { 2p(K0PtX
if (data[j] < data[lowIndex]) { \[+ZKj:
lowIndex = j; !>
} i!ejK6Q
} r]kLe2r:B
SortUtil.swap(data,i,lowIndex); 1!0BE8s"@
} >c;qIP)Z
} J$]d%p_I
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} oRmN|d ~4
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Shell排序: X 4;+`
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package org.rut.util.algorithm.support; x]Nq|XK
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import org.rut.util.algorithm.SortUtil; ]C}z3hhk
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/** g>T'R Vb
* @author treeroot &*T57tE
* @since 2006-2-2 _lu.@IX-
* @version 1.0 GriL< =?t
*/ `cMa Fc-y/
public class ShellSort implements SortUtil.Sort{ ^A;v|U
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/* (non-Javadoc) [;h@q}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - "h
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*/ q}1AV7$Ai
public void sort(int[] data) { i*nNu-g
for(int i=data.length/2;i>2;i/=2){ q@r8V&-<
for(int j=0;j insertSort(data,j,i); m:ITyQ+
} z*I=
} r#d~($[93
insertSort(data,0,1); (LkGBnXE
} rF>:pS,`&
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/** "Do9gW
* @param data CdC&y}u
* @param j uRxo,.}c
* @param i ,.x1+9X
*/ :
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private void insertSort(int[] data, int start, int inc) { CP["N(fF
int temp; bUU_NqUf*3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `+Wl
fk;
} .
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} jbMzcn~ehI
} 2{|
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} f* p=]]y
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快速排序: {LrezE4
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package org.rut.util.algorithm.support; ,K,n{3]
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import org.rut.util.algorithm.SortUtil; '<4/Md[
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/** x_s9DkX
* @author treeroot [;83
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* @since 2006-2-2 `>g:
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* @version 1.0 P)7SK&]r;=
*/ ~eA7:dZLb
public class QuickSort implements SortUtil.Sort{ A@f`g[q
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/* (non-Javadoc) rcY[jF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [8l8m6
*/ vRVQ:fw
public void sort(int[] data) { H+;>>|+:~
quickSort(data,0,data.length-1); #q6jE
} _ ?xORzO
private void quickSort(int[] data,int i,int j){ ? R#-gvX%
int pivotIndex=(i+j)/2; R*'rg-d
file://swap !%_}Rv!JT
SortUtil.swap(data,pivotIndex,j); Ip|~j}
}
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int k=partition(data,i-1,j,data[j]); TO-[6Pq#
SortUtil.swap(data,k,j); z|<6y~5,
if((k-i)>1) quickSort(data,i,k-1); "!+q0l1]@
if((j-k)>1) quickSort(data,k+1,j); p*8=($j4
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} XSpX6fq
/** d+\o>x|Y!Y
* @param data ApG_Gd.
* @param i PI)lJ\
* @param j .Q>.|mu
* @return 8I$>e (
*/ */u_RJ
private int partition(int[] data, int l, int r,int pivot) { ]wc'h>w
do{ W{*U#:Jx1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F$^RM3
SortUtil.swap(data,l,r); es6!p 7p?
} }[ld=9p(
while(l SortUtil.swap(data,l,r); {M )Y6\v
return l; sV%<U-X
} 7:)=
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} to|O]h2*U2
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改进后的快速排序: `gDpb.=Y
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package org.rut.util.algorithm.support; SRRqIQz
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import org.rut.util.algorithm.SortUtil; .-awl1 W
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/** N>/!e787OU
* @author treeroot ;xS@-</:
* @since 2006-2-2 P\pHos
* @version 1.0 K7 -AVMY
*/ |Rd?s0u
public class ImprovedQuickSort implements SortUtil.Sort { -r@fLkwg
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private static int MAX_STACK_SIZE=4096; Pv|g.hH9m
private static int THRESHOLD=10; &7VN?ox1
/* (non-Javadoc) |A0BYzlVc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F>dB@V-
*/ | (JxtQqQg
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; =\"88e;b2
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int top=-1; >B!E 6ah
int pivot; ,.A@U*j
int pivotIndex,l,r; >-*rtiE
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stack[++top]=0; 7/&i'y
stack[++top]=data.length-1; 3LN+gXmU
@tGju\E"o
while(top>0){ 7jL+c~
int j=stack[top--]; ePv3M&\J
int i=stack[top--]; ywTt<;
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pivotIndex=(i+j)/2; %IL]
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pivot=data[pivotIndex]; )CJXkzOX
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SortUtil.swap(data,pivotIndex,j); zl^ %x1G
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file://partition `<2k.aW4e8
l=i-1; Q3[MzIk 4
r=j; =(2y$,6g?
do{ #s>AiD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,h,OUo]LIY
SortUtil.swap(data,l,r); iO 9.SF0:
} 6?$yBu9l
while(l SortUtil.swap(data,l,r); UTB]svC'
SortUtil.swap(data,l,j); 9:
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= >CADTU
if((l-i)>THRESHOLD){ M(8dKj1+
stack[++top]=i; n_QSuh/Wn
stack[++top]=l-1; )O\w'|$G
} 10R#}~D
if((j-l)>THRESHOLD){ .);~H#
stack[++top]=l+1; >9dzl#
stack[++top]=j; 17P5Dr&
} q)te/J@
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} P1C{G'cR
file://new InsertSort().sort(data); Z*/{^ zsE
insertSort(data); A0X'|4I
} 2 tD{c^
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/** fE`p
* @param data _E'F
*/ S!WG|75B
private void insertSort(int[] data) { 2qd5iOhX+
int temp; X})5XYvA*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cD.afy
} gxnIur)
} Db4(E*/pj!
} <<'%2q5
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} h4p<n&)F
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归并排序: $, hHR:
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package org.rut.util.algorithm.support; K@%o$S?>z_
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import org.rut.util.algorithm.SortUtil; Me 5Xd|
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/** 90wGS_P04
* @author treeroot 8:t!m>(*
* @since 2006-2-2 lA{JpH_Y8s
* @version 1.0 P2Jo^WS
*/ a =
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public class MergeSort implements SortUtil.Sort{
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/* (non-Javadoc) 6Y`rQ/F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ _C@A>]GT
public void sort(int[] data) { r01u3!
int[] temp=new int[data.length]; uG7?:) pxv
mergeSort(data,temp,0,data.length-1); YsO3( HS
} mzf~qV^T
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private void mergeSort(int[] data,int[] temp,int l,int r){ )%q!XM
int mid=(l+r)/2; /
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if(l==r) return ; R
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mergeSort(data,temp,l,mid); S
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mergeSort(data,temp,mid+1,r); s%QCdU ]
for(int i=l;i<=r;i++){ =;"e Z
temp=data; qTrM*/m:]L
} }y1r
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int i1=l; vA"LV+@
int i2=mid+1; HvR5-?qQ
for(int cur=l;cur<=r;cur++){ Or#KF6+ut
if(i1==mid+1) k4d;4D?
data[cur]=temp[i2++]; C{:U<q
else if(i2>r) 1Ep7CV-n}
data[cur]=temp[i1++]; W|Cs{rBc?
else if(temp[i1] data[cur]=temp[i1++]; -FF#+Z$
else "8p<NsU
data[cur]=temp[i2++]; bt*
} }uwZS=pw
}
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} SdF+b+P]
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改进后的归并排序: JXV#V7
wh#IQ.E-
package org.rut.util.algorithm.support; foUBMl
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import org.rut.util.algorithm.SortUtil; p"7]zq]'
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/** }vU^gPH
* @author treeroot *~~J1.ja>
* @since 2006-2-2 1,Es'
* @version 1.0 Y(] W+k<
*/ Q,M,^_
public class ImprovedMergeSort implements SortUtil.Sort {
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private static final int THRESHOLD = 10; ahdwoB
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/* ,k1ns?i9KH
* (non-Javadoc) )gz]F_
* 7xM4=\~OG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]*U+nG
*/ &1Y7Ne
public void sort(int[] data) { WZn"I&Z
int[] temp=new int[data.length]; f*:N*cC
mergeSort(data,temp,0,data.length-1); mE;^B%v
} h@]{j_$u
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*,
private void mergeSort(int[] data, int[] temp, int l, int r) { fu{v(^
int i, j, k; v-8{mK`9\
int mid = (l + r) / 2; n^rbc;}
if (l == r) h+7U'+|%A
return; G0kF[8Am
if ((mid - l) >= THRESHOLD) P)LQ=b}V#;
mergeSort(data, temp, l, mid); R%~~'/2V
else me F.
insertSort(data, l, mid - l + 1); t\]kVo)
if ((r - mid) > THRESHOLD) ;dtA-EfOZ
mergeSort(data, temp, mid + 1, r); JvEW0-B^l,
else tKeozV[V
insertSort(data, mid + 1, r - mid); iaQfxQP1w%
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for (i = l; i <= mid; i++) { 4]E1x l
temp = data; e\O625
} :?}>Q
for (j = 1; j <= r - mid; j++) { bMsThoePT
temp[r - j + 1] = data[j + mid]; xOr"3;^
} FI[]#
int a = temp[l]; *y(UI/c
int b = temp[r]; @\:@_}Z`_}
for (i = l, j = r, k = l; k <= r; k++) { cmYzS6f,7
if (a < b) { DZ $O%
data[k] = temp[i++]; "r8N-
h/P
a = temp; _RS
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} else { fh66Gn,
data[k] = temp[j--]; KZ1m2R}'
b = temp[j]; RQu[FZT,
} t8; nP[`
} /1m+iM^V
} Z^Wv(:Nr
4N1)+W8k*
/** In;P33'p
* @param data L^PBcfg
* @param l
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* @param i c>T)Rc
*/ +bR|;b(v
private void insertSort(int[] data, int start, int len) { ^rO!-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]3Ibl^J
} ) 3V1aC
} @k# xr
} hSN38wy
} #;+SAoN
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堆排序: |+JC'b?,
m( %PZ*s
package org.rut.util.algorithm.support; ;#8xRLW
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import org.rut.util.algorithm.SortUtil; |Ho}
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/** AM#s2.@
* @author treeroot glkH??S
* @since 2006-2-2 'F:Tv[qx
* @version 1.0 RMid}BRE
*/ e?
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public class HeapSort implements SortUtil.Sort{ rd24R-6
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/* (non-Javadoc) eOfVBF<C2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T{N8 K K
*/ A!uiM*"W
public void sort(int[] data) { !kH 1|
MaxHeap h=new MaxHeap(); >7cDfv"
h.init(data); (.wR!l#!
for(int i=0;i h.remove(); l&mY}k
System.arraycopy(h.queue,1,data,0,data.length); 1CJAFi>%D
} dYlVJ_0Zr
; 3sjTqD
private static class MaxHeap{ RX^Xtc"
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void init(int[] data){ g&8-X?^Q
this.queue=new int[data.length+1]; PeLzZ'$D
for(int i=0;i queue[++size]=data; /#q6.du
fixUp(size); afu!.}4Ct
} Mp[2A uf
} 2p58_^l
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private int size=0; 6!;D],,"#.
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private int[] queue; [8Z
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glBS|b$\:
public int get() { nV8iYBBym
return queue[1]; UgZL<}
} Q]$pg 5O
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public void remove() { ^f,%dM=i=
SortUtil.swap(queue,1,size--); ~]n=TEJ>
fixDown(1); .S* sGauM
} #)iPvV'
file://fixdown k[@/N+;")`
private void fixDown(int k) { eax"AmO
int j; FchO
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while ((j = k << 1) <= size) { 2R;#XmKS
if (j < size %26amp;%26amp; queue[j] j++; PSyUC#;
if (queue[k]>queue[j]) file://不用交换 VssWtL
break; k-)Ls~#+
SortUtil.swap(queue,j,k); ,3!4
D^
k = j; nUisC5HW
} %'S[f
} @3S:W2k
private void fixUp(int k) { #u +~ ^M
while (k > 1) { c:
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int j = k >> 1; 3UUN@Tx
if (queue[j]>queue[k]) cIP%t pTW.
break; H?V
b
SortUtil.swap(queue,j,k); \5Y<UJKi
k = j; wrsr U
} ${gO=Z
} 8NTE`l=>/
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} U"~W3vwJ
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} !fjB oK+
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SortUtil: a|4Q6Ycu
Dv&K3^~Rfb
package org.rut.util.algorithm; rZE+B25T~
)lq+Gv[%F
import org.rut.util.algorithm.support.BubbleSort; ~qK/w0=j
import org.rut.util.algorithm.support.HeapSort; Aq\K N.
import org.rut.util.algorithm.support.ImprovedMergeSort; RdNLf
import org.rut.util.algorithm.support.ImprovedQuickSort; KKWvV4u
import org.rut.util.algorithm.support.InsertSort; k|U2Mp
import org.rut.util.algorithm.support.MergeSort; ~@#a*="
import org.rut.util.algorithm.support.QuickSort; _rmKvSD%
import org.rut.util.algorithm.support.SelectionSort; !(Y,2{
import org.rut.util.algorithm.support.ShellSort; yT~x7,
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/** )V&hS5P=S
* @author treeroot |--Jd$ dj
* @since 2006-2-2 8;#yXlf
* @version 1.0 l[rK)PM
*/ qB&Je$_uh
public class SortUtil { sV\K[4HG
public final static int INSERT = 1; vTTXeS-b
public final static int BUBBLE = 2; |=MhI5gsx
public final static int SELECTION = 3; /'b7q y
public final static int SHELL = 4; 0N$FIw2
public final static int QUICK = 5; h_SkX@"/-
public final static int IMPROVED_QUICK = 6; ,]]*}4[r
public final static int MERGE = 7; \-f/\P/ w
public final static int IMPROVED_MERGE = 8; oYt 34@{?
public final static int HEAP = 9; BRM!g9
\O\q1
s~
public static void sort(int[] data) { #<EYO
sort(data, IMPROVED_QUICK); ={+8jQqi1
} -3guuT3x\
private static String[] name={
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P{yb%@I~J
}; _l"nwEs
>k/cm3
private static Sort[] impl=new Sort[]{ 1X&jlD?
new InsertSort(), ;_2+Y^Qb
new BubbleSort(), K1Uq`T J
new SelectionSort(), Vxu V`Plf
new ShellSort(), .{} 8mFi1
new QuickSort(), !a-B=pn!]
new ImprovedQuickSort(), \4^rb?B
new MergeSort(), #<ST.f@*
new ImprovedMergeSort(), S(?A3 H
new HeapSort() Am_>x8z
}; w6WPfy(/2
'W yWO^Bdk
public static String toString(int algorithm){ /zoy,t-i
return name[algorithm-1]; qb/}&J7+
} ,&qC
R
sw
] _5b
public static void sort(int[] data, int algorithm) { f-71`Pyb
impl[algorithm-1].sort(data); 5j6`W?|q
} 2E[7RBFY+\
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(
public static interface Sort { /XEW]/4
public void sort(int[] data); :dAd5v2f
} (Bd'Pj]:
n P]!{J]
public static void swap(int[] data, int i, int j) { \7"|'fz
int temp = data; CgrQ"N5
data = data[j]; _]pu"hZz4
data[j] = temp; qq]Iy=
} ~rJG4U
} ne/JC(