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。 $V\xN(Ed
插入排序: Bq@G@Qi
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package org.rut.util.algorithm.support; bt
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import org.rut.util.algorithm.SortUtil; |`O7>(h
/** }l[t0C
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* @author treeroot V@Po}
* @since 2006-2-2 TS1k'<c?
* @version 1.0
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*/ Z)?"pBv'
public class InsertSort implements SortUtil.Sort{ @8_K^3-~e
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/* (non-Javadoc) "HYK~V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2'@0|k,yC
*/ ZGp8$Y>r
public void sort(int[] data) { Y+G4:
int temp; ul% q6=f)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cc^V~-ph
} OK2wxf
} \{~x<<qFd
} m*I5 \
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} beIEy(rA
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冒泡排序: 1P[!B[;c
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package org.rut.util.algorithm.support; ?^@;8m
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import org.rut.util.algorithm.SortUtil; +"d{P,[3J
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/** =RQ>q
* @author treeroot K):)bL(B
* @since 2006-2-2 m*a0V
* @version 1.0 e1'_]
*/ *~-~kv4-
public class BubbleSort implements SortUtil.Sort{ E&"bgwav{(
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/* (non-Javadoc) i-/'F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (sPZ1Fr\o
*/ %F{@DN`
public void sort(int[] data) { f:BW{Cij;y
int temp; 2#py>rF(
for(int i=0;i for(int j=data.length-1;j>i;j--){ vwT?Bp
if(data[j] SortUtil.swap(data,j,j-1); rN>f"/J
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} CP={|]>+S
} n7Re@'N<
} \s)j0F)
} 4ci
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} fM8 :Nt$
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选择排序: >B3_P4pW9
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package org.rut.util.algorithm.support; &{7%VsTB
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import org.rut.util.algorithm.SortUtil; *d)B4qG
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/** 58=fT1
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* @author treeroot b
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* @since 2006-2-2 DuCq16'0T
* @version 1.0 :MJTmpq,
*/ *DU86JL`
public class SelectionSort implements SortUtil.Sort { O*c+TiTb
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/* [Si`pPvl
* (non-Javadoc) <ZCjQkka>r
* hL&z"_`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z}XA(;ck
*/ jgukW7H
public void sort(int[] data) { FVHEb\Z
int temp; HPu nNsA
for (int i = 0; i < data.length; i++) { i\N,4Fdor
int lowIndex = i; sdrE4-zd
for (int j = data.length - 1; j > i; j--) { HhIa=,VY
if (data[j] < data[lowIndex]) { tn:tM5m
lowIndex = j; M|e@N
} $ABW|r
} r1t TY?
SortUtil.swap(data,i,lowIndex); UF0PWpuO
} rw58bkh6
} V>z8*28S.
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} Uv.{=H:
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Shell排序: tX6n~NJ$
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package org.rut.util.algorithm.support; $,bLb5}Qu
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import org.rut.util.algorithm.SortUtil; %}2 s74D*Z
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/** O-q [#P
* @author treeroot 4R}2H>VV%
* @since 2006-2-2 z${DW@o3
* @version 1.0 $1/yc#w
u
*/ |"\A5v|1
public class ShellSort implements SortUtil.Sort{ h\:"k_u#
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/* (non-Javadoc) !~PV\DQN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'BtvT[KM
*/ j#.Aiy:,
public void sort(int[] data) { _18) XR
for(int i=data.length/2;i>2;i/=2){ dd_n|x1
for(int j=0;j insertSort(data,j,i); i.6c;KU
} UG 9uNgzQ/
} %nT!u!#
insertSort(data,0,1); )g+~"&Gcx
} PkMN@JS
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/** <Y9e n!3\
* @param data GK~uoz:^O
* @param j t#=W'HyW8
* @param i |+f@w/+
*/ F7x]BeTM
private void insertSort(int[] data, int start, int inc) { /Rf:Z.L
int temp; <D%.'=%pZ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PsaKzAg?
} :)p\a1I[*
} 4*P#3 B'@V
} 2V:`':
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} fl9`Mgu
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快速排序: ^|hlY]Ev
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package org.rut.util.algorithm.support; BF
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import org.rut.util.algorithm.SortUtil; whxTCI V
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/** Uc^e Ia@
* @author treeroot )%dxfwd6
* @since 2006-2-2 j
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* @version 1.0 x8
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*/ L
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public class QuickSort implements SortUtil.Sort{ ose(#n4 0
I() =Ufs5z
/* (non-Javadoc) L `NY^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aS=-9P;v
*/ < KGq
public void sort(int[] data) { E2K{9@i
quickSort(data,0,data.length-1); X|y(B%:
} vJ9I z
private void quickSort(int[] data,int i,int j){ ^m~&2l\N=
int pivotIndex=(i+j)/2; d<K2
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file://swap r2yJ{j&s
SortUtil.swap(data,pivotIndex,j); ti'B}bH>'
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int k=partition(data,i-1,j,data[j]); GZH{"_$
SortUtil.swap(data,k,j); 4P jC[A*
if((k-i)>1) quickSort(data,i,k-1); Pm&h v*D
if((j-k)>1) quickSort(data,k+1,j); :e1kpQ
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} ,.9k)\/V
/** }C4wED.
* @param data s|IY
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* @param i 6~c#G{kc
* @param j 5C0![$W>
* @return iR?}^|]
*/ 6S`0<Z;;/
private int partition(int[] data, int l, int r,int pivot) { cX7 O*5C
do{ ]-8WM5\qJM
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @@JyCUd
SortUtil.swap(data,l,r); }`cf3'rdk
} @,Z0u2WLl6
while(l SortUtil.swap(data,l,r); V56WgOBxz
return l; ls7eypKR
} v{d$DZUs
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} NNt
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改进后的快速排序: &S,_Z/BS;
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package org.rut.util.algorithm.support; vjjVZ
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import org.rut.util.algorithm.SortUtil; `AYq,3V
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/** B (Ps/
* @author treeroot H2H`7 +I,
* @since 2006-2-2 *Nm$b+
* @version 1.0 Mg#yl\v
*/ I4W@t4bZ
public class ImprovedQuickSort implements SortUtil.Sort { $=iw<B r
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private static int MAX_STACK_SIZE=4096; jp_|pC'
private static int THRESHOLD=10; =Ox}WrU~
/* (non-Javadoc) #x;,RPw5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) />Q}0Hg
*/ aaP_^m O
public void sort(int[] data) { NV7k@7_{B
int[] stack=new int[MAX_STACK_SIZE]; q3AqU?f
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int top=-1; c/Xg ARCO
int pivot; h2 KI
int pivotIndex,l,r; 7:,f|>
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stack[++top]=0; =:aJZ[UU<2
stack[++top]=data.length-1; *,mI=1
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while(top>0){ ak7kb7 5o
int j=stack[top--]; 8l_M 0F,
int i=stack[top--]; ')U~a
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pivotIndex=(i+j)/2; U.KQjBi
pivot=data[pivotIndex]; h%:rJ_#Zl
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SortUtil.swap(data,pivotIndex,j); CHsg2S
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file://partition zw['hqW
l=i-1; H T|DT
r=j; Keozn*fzI
do{ i|J%jA
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <XIIT-b[
SortUtil.swap(data,l,r); =A.$~9P
} Y8zTw`:V
while(l SortUtil.swap(data,l,r); @^xtxtjzux
SortUtil.swap(data,l,j); 4);_f
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if((l-i)>THRESHOLD){ " !~o
stack[++top]=i; ,;_+o]
stack[++top]=l-1; )P$|9<_q7x
} tO&ffZP8$
if((j-l)>THRESHOLD){ 7Ml4u%?
stack[++top]=l+1; h:nybLw?
stack[++top]=j; ikW[lefTq
} t
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`&M,B=E
} sU"%,Q5
file://new InsertSort().sort(data); vd{QFJ
insertSort(data); 9<6q(]U
} qx t0Jr8
/** >>
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* @param data BH">#&j[
*/ &3BoK/y3
private void insertSort(int[] data) { |'q%9#
int temp; gv''A"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <eoie6@3
} j{@6y
} Mf1(4F
} d~Z\%4
j,.\QwpU
} %up?70
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归并排序: E5w;75,
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package org.rut.util.algorithm.support; <Dd>- K
+!/ATR%Uci
import org.rut.util.algorithm.SortUtil; 5o#JHD
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/** `7CK;NeT
* @author treeroot V)j[`,M:
* @since 2006-2-2 -L1785pB85
* @version 1.0 T3X'73M
*/ Rff F:,b
public class MergeSort implements SortUtil.Sort{ wDJ`#"5p{
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/* (non-Javadoc) ''y.4dvX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J@s>Pe)
*/ K#0TD("
public void sort(int[] data) { j]Jgz<
int[] temp=new int[data.length]; BAf$tyh
mergeSort(data,temp,0,data.length-1); 8]ZzO(=@{
} j3gDGw;
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private void mergeSort(int[] data,int[] temp,int l,int r){ vADiW~^Q^
int mid=(l+r)/2; #c^V%
if(l==r) return ; `*C=R
_
mergeSort(data,temp,l,mid); +$h
mergeSort(data,temp,mid+1,r); gc9R;B1
for(int i=l;i<=r;i++){ *doNPp)m
temp=data; [9 W@<p
} e$# *t
int i1=l; 4:`D3
int i2=mid+1; \^x{NV@v42
for(int cur=l;cur<=r;cur++){ xN 1P#
if(i1==mid+1) O
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data[cur]=temp[i2++]; ,/42^|=Z6O
else if(i2>r) m`/Nl<
data[cur]=temp[i1++]; 9iA rBL"
else if(temp[i1] data[cur]=temp[i1++]; rbZbj#
else @5Xo2}o-Q
data[cur]=temp[i2++]; =V^-@ji)b
} '5e,@t%y
} c3$T3Lu1
C=:<[_m`
} VdLoi\-/L
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改进后的归并排序: T @ c~ql
0j.K?]f)h
package org.rut.util.algorithm.support; Zf'*pp T&q
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import org.rut.util.algorithm.SortUtil; a.Ho>(V/4
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/** ]&cnc8tC
* @author treeroot :xd;=;q5
* @since 2006-2-2 qJhsMo2IH
* @version 1.0 1Kg0y71"
*/ f7Gn$E|/r;
public class ImprovedMergeSort implements SortUtil.Sort { )@PnpC%H
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private static final int THRESHOLD = 10; ?'a8QJo
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/* oQ$yr^M
* (non-Javadoc) s]arNaaA
* bSB%hFp=Cp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;G[V:.o-
*/ 4,9$udiGY
public void sort(int[] data) { j[>cv;h
;
int[] temp=new int[data.length]; * {g3ia
mergeSort(data,temp,0,data.length-1); 3H,E8>Vd
} +P/kfY"
asT-=p_ 0.
private void mergeSort(int[] data, int[] temp, int l, int r) {
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int i, j, k; N[%u>!
int mid = (l + r) / 2; T$4{fhV
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if (l == r) Sc)^k
return; _?{7%(C
if ((mid - l) >= THRESHOLD) J K
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mergeSort(data, temp, l, mid); C?PQ>Q!f-
else Z_d"<k}I
insertSort(data, l, mid - l + 1); "yWw3(V2>
if ((r - mid) > THRESHOLD) uO?+vYAN
mergeSort(data, temp, mid + 1, r); )!T~l(g
else 2]>O ZhS
insertSort(data, mid + 1, r - mid); @<.@X*#I
Gw
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for (i = l; i <= mid; i++) { (3#PKfY+
temp = data; 5KCB^`|b>t
} &V"oJ}M/a
for (j = 1; j <= r - mid; j++) { !X>u.}?g
temp[r - j + 1] = data[j + mid]; e+
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} Sj9fq*
int a = temp[l]; YOCEEh?
int b = temp[r]; $.G 7Vt
for (i = l, j = r, k = l; k <= r; k++) { Dl,QCZeM
if (a < b) { 9&6j uL
data[k] = temp[i++]; c}(WniR-"
a = temp; *@U{[J
} else { &#r+a'
data[k] = temp[j--]; -yqsJGY
b = temp[j]; >I5:@6
Z
} B9v>="F
} T1LYJ]5
} 80xr zv
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/** +7Ws`qhEe
* @param data pLMt2G
* @param l Sg#XcTG
* @param i 9}573M
*/ zWsr|= [
private void insertSort(int[] data, int start, int len) { i\R0+O{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OM*_%UF
} Y\|#Lu>B
} &C 9hT
} 3h@]cWp
} FpoHm%+
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堆排序: LPk@t^[
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package org.rut.util.algorithm.support; Kxe\H'rR
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import org.rut.util.algorithm.SortUtil; ]9@:7d6
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/** C2
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* @author treeroot c9(3z0!F?
* @since 2006-2-2 ]
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* @version 1.0 +v~xgUs
*/ i"{O~[
public class HeapSort implements SortUtil.Sort{ e#Tv5O
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/* (non-Javadoc) m]p{]6h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q*ITs!~Z
*/ \pmS*Dt
public void sort(int[] data) { K$E3RB_F
MaxHeap h=new MaxHeap(); (In{GA7;
h.init(data); f/Gx}x=
for(int i=0;i h.remove(); 53Adic
System.arraycopy(h.queue,1,data,0,data.length); &L o TO+
} U82a]i0
#Z&/w.D2
private static class MaxHeap{ 1? >P3C
nt.LiM/L
void init(int[] data){ QX,$JM3
this.queue=new int[data.length+1]; kZ]H[\Fs
for(int i=0;i queue[++size]=data; GP:<h@:798
fixUp(size); =BJLj0=N
} %sa?/pjK
} j"W>fC/u
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private int size=0; Y&|Z*s+
+}
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private int[] queue; bR\7j+*&
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public int get() { $vn6%M[
return queue[1]; sdp&D@
} 2e48L677-
d;i|s[6ds`
public void remove() { A5l Cc
b
SortUtil.swap(queue,1,size--); ts]e M1;
fixDown(1); FU`(mQ*Yd
} *$p*'vR
file://fixdown 5Qgu:)}
private void fixDown(int k) { 2"/MM2s
int j; l#)X/(?;
while ((j = k << 1) <= size) { {UiSa'TR1b
if (j < size %26amp;%26amp; queue[j] j++; `oRyw6Sko
if (queue[k]>queue[j]) file://不用交换 3?OQ-7,
break; sXLW';Fz
SortUtil.swap(queue,j,k); ^FCXcn9
k = j; :X2_#qW#C
}
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} F72#vS
j
private void fixUp(int k) { So%X(,
|
while (k > 1) { "N4^ ^~s
int j = k >> 1; z]7 WC
if (queue[j]>queue[k]) r>mBe;[TX
break; u6iW1,#
SortUtil.swap(queue,j,k);
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k = j; b,!C8rJ
} !R{IEray
} JsaXI:%1
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} ?Y=aO(}=h
1]xk:u4LA
} CEfqFn3^
X9>fE{)!
SortUtil: n Ja!&G&
r6<;bO(
package org.rut.util.algorithm; S
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s{^98*
import org.rut.util.algorithm.support.BubbleSort; }D1x%L
import org.rut.util.algorithm.support.HeapSort; G?Et$r7:R
import org.rut.util.algorithm.support.ImprovedMergeSort; `kKssU<
import org.rut.util.algorithm.support.ImprovedQuickSort; 8}%F`=Y0
import org.rut.util.algorithm.support.InsertSort; pwSgFc$z
import org.rut.util.algorithm.support.MergeSort; iUkUo x
import org.rut.util.algorithm.support.QuickSort; 5(;Y&?k
import org.rut.util.algorithm.support.SelectionSort; Ou[K7-m%&
import org.rut.util.algorithm.support.ShellSort; p.8 bX
$<*) 5|6
/** B4s$| i{D
* @author treeroot n,T
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* @since 2006-2-2 VFE@qX|
* @version 1.0 HZrA}|:h
*/ J+D|/^
public class SortUtil { :UwBs
public final static int INSERT = 1; KQ~y;{h?b
public final static int BUBBLE = 2;
Omd;
public final static int SELECTION = 3; ss^a=?~
public final static int SHELL = 4; RhYe=Qh4{p
public final static int QUICK = 5; ~DH9iB
public final static int IMPROVED_QUICK = 6; J,$xQ?,wE
public final static int MERGE = 7; .jRI
$vm
public final static int IMPROVED_MERGE = 8; Y1r$;;sH
public final static int HEAP = 9; 1UQ,V`y
xU'z>y4V$
public static void sort(int[] data) { XQ1]F{?/H
sort(data, IMPROVED_QUICK); 18$d-[hX
} H3wJ5-q(
private static String[] name={ \p^V~fy7rU
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G1|1Z5r
}; i0M6;W1T
Lf_Y4a#
private static Sort[] impl=new Sort[]{ n%Oi~7>
new InsertSort(), ^^q&VL
new BubbleSort(), ~cU1
/CW8
new SelectionSort(), d+n2
c`i
new ShellSort(), {lK2yi
new QuickSort(), <ZT
C^=3
new ImprovedQuickSort(), eP~bl
new MergeSort(), wd:Yy
new ImprovedMergeSort(),
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new HeapSort() Y S3~sA
}; WZa6*pF
@@R Mm$
public static String toString(int algorithm){ ]*dYX=6
return name[algorithm-1]; s|IBX0^@
} OvH:3"Sdy
sRB=<E*_
public static void sort(int[] data, int algorithm) { |v+z*}fKw
impl[algorithm-1].sort(data); 9J:|"@)N
} l|q-kRRjn
9nY`rF8@
public static interface Sort { %/dOV[/
public void sort(int[] data); t
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} sY<UJlDKT
r8"2C#
public static void swap(int[] data, int i, int j) { =gF035
int temp = data; 6R :hs C$
data = data[j]; w!lk&7Q7Z
data[j] = temp; [kg^S`gc#
} qV=:2m10x
} ):N#X<b':