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。 l3iL.?&Pa
插入排序: l1W5pmhK]'
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package org.rut.util.algorithm.support; dEe/\i'r9
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import org.rut.util.algorithm.SortUtil; @MB;Ez
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/** >9u6@
* @author treeroot 5E!|-xD
* @since 2006-2-2 Ugdm"
* @version 1.0 ~C!vfPC
*/ B|GJboQ
public class InsertSort implements SortUtil.Sort{ Fsq S)
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/* (non-Javadoc) [?IERE!xQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nM0nQ{6
*/ SV\x2^Ea0
public void sort(int[] data) { s`
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int temp; HWefuj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M $~h(3
} }=GyBnXu
} iPFYG
} BEI/OGp
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} GO?-z 0V
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冒泡排序: %ri4nKGS
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package org.rut.util.algorithm.support; xd .I5
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import org.rut.util.algorithm.SortUtil; QOF;j#H^
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/** UxS;m4
* @author treeroot TM^1{0;r5
* @since 2006-2-2 =AKW(v
* @version 1.0 q/B+F%QiMQ
*/ ASYUKh,h
public class BubbleSort implements SortUtil.Sort{ vSnb>z1
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/* (non-Javadoc) X
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3x=F
*/ _E30t( _.
public void sort(int[] data) { 3tm z2JIb
int temp; x#YOz7.
for(int i=0;i for(int j=data.length-1;j>i;j--){ cLYc""=
if(data[j] SortUtil.swap(data,j,j-1); U|Jo[4A
} 6/-!oo
} {!/y@/NK2
} V.-?aXQ *
} !}3`Pl.(r
pJv?
} G1nW{vce
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选择排序: E%;'3Qykva
Asn0&Ys4
package org.rut.util.algorithm.support; Gqia@>T4*N
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import org.rut.util.algorithm.SortUtil; 7GIv3Dc
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/** |v1 K@
* @author treeroot iP!Y4F
* @since 2006-2-2 G/8xS=
* @version 1.0 9Y 4N
*/ asq/_`
public class SelectionSort implements SortUtil.Sort { qIqk@u
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/* $3[cBX.=
* (non-Javadoc) #y*=UV|h
* GVfu_z?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - dOT/%Ux
*/ dH/t|.%
public void sort(int[] data) { :U:7iP:
int temp; 1`}fbX;"m)
for (int i = 0; i < data.length; i++) { )4`Ml*7x
int lowIndex = i; <zf+Ii1:,
for (int j = data.length - 1; j > i; j--) { y="SzPl
if (data[j] < data[lowIndex]) { V%0.%/<#5
lowIndex = j; rgYuF,BT.
} nM; G;
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} 28)TXRr-
SortUtil.swap(data,i,lowIndex); b"Mq7&cf
} k41la?
} *M|\B|A.
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} &53#`WgJ
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Shell排序: Fm;)7.%
>
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package org.rut.util.algorithm.support; kdUGmR0d
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import org.rut.util.algorithm.SortUtil; > 4ct[fW+
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/** Me}TW!GC
* @author treeroot eTF8B<?
* @since 2006-2-2 \i,cL)HM
* @version 1.0 rq1kj 8%2
*/ HEuM"2{DMM
public class ShellSort implements SortUtil.Sort{ *3/7wSV:
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/* (non-Javadoc) @gqw]_W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `es($7}P_W
*/ [[e |GQ
public void sort(int[] data) { p-pw*wH0
for(int i=data.length/2;i>2;i/=2){ -/-6Td1JY>
for(int j=0;j insertSort(data,j,i); //
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} w}Upa(dU
} =_'cG:=)
insertSort(data,0,1); 7RP_
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} Vf?#W,5>=
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/** /,Rca1W
* @param data nFfCw%T?
* @param j ~t:b<'/
* @param i Qsntf.fT
*/ 99 !{[gOv
private void insertSort(int[] data, int start, int inc) { N4To#Q1w
int temp; ys/mv'#>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q@2tT&eL
} _=L;`~=C9e
} u!uDu,y
} .UrYF 0
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} VM]IL%AN
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快速排序: cY2-T#rL
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package org.rut.util.algorithm.support; ,z1!~gIal
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import org.rut.util.algorithm.SortUtil; i$ L]X[
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/** j/9QV
* @author treeroot =4e=wAO(i
* @since 2006-2-2 p{a]pG+3
* @version 1.0 Ys$YI{
*/ DLYZsWA,
public class QuickSort implements SortUtil.Sort{ Uk:.2%S2
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/* (non-Javadoc) z`/.v&<>V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #Q3PzDfj
*/ RW7oL:$dt
public void sort(int[] data) { %?f:"
quickSort(data,0,data.length-1); $a^isd4
} $G_Q`w=jM
private void quickSort(int[] data,int i,int j){ ,Us2UEWNv
int pivotIndex=(i+j)/2; g`OOVaB
file://swap -(w~LT$ "
SortUtil.swap(data,pivotIndex,j); jBv$^L
2 1~7{#
int k=partition(data,i-1,j,data[j]); ]zyX@=mM
SortUtil.swap(data,k,j); L)lQ&z?
if((k-i)>1) quickSort(data,i,k-1); OF&h=1De,
if((j-k)>1) quickSort(data,k+1,j); V->%)d3i
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} ^W"Q(sh
/** P=^#%7J/l
* @param data y5/6nvH_6
* @param i "Py Wo
* @param j ,iVPcza
* @return ]&:b<]K3
*/ nnE_OK!}T
private int partition(int[] data, int l, int r,int pivot) { h1XMx'}B
do{ (.1 rtj
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5}eQaW48
SortUtil.swap(data,l,r); ,k~j6Z
} um jhG6
while(l SortUtil.swap(data,l,r); "]m*816'
return l; v'@b. R,
} CofH}-
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} 3}4p_}f/[4
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改进后的快速排序: i7nL_N
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package org.rut.util.algorithm.support; y?#9>S >:\
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import org.rut.util.algorithm.SortUtil; fYhR#FVI
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/** 7%9)C[6NSs
* @author treeroot rKzlK 'U
* @since 2006-2-2 >`89N'lZBm
* @version 1.0 0)AM-/"
*/ #%^\\|'z
public class ImprovedQuickSort implements SortUtil.Sort { =4zNo3IvL+
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private static int MAX_STACK_SIZE=4096; ] *-;' *
private static int THRESHOLD=10; A)Qh
/* (non-Javadoc) Kej|1g1f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1TNz&=e
*/ ;cI#S%uvpn
public void sort(int[] data) { i-,D_
int[] stack=new int[MAX_STACK_SIZE]; /2e%s:")h
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int top=-1; 2QGMe}
int pivot; *KK[(o}^J-
int pivotIndex,l,r; wmo{YS3t|
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stack[++top]=0; W|dpFh`
stack[++top]=data.length-1; qO-C%p
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while(top>0){ r219M)D?
int j=stack[top--]; s>|Z7[*
int i=stack[top--]; 0e+W/Tq
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pivotIndex=(i+j)/2; Y{Da+
pivot=data[pivotIndex]; H`m:X,6}
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SortUtil.swap(data,pivotIndex,j); ;1W6"3t-Y
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file://partition g5#CN:%f
l=i-1; Gg%tVQu
r=j; 84=-Lw
do{ yo'9x
s
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dhHEE|vrz
SortUtil.swap(data,l,r); s`hav
} G#H9g PY
while(l SortUtil.swap(data,l,r); bD35JG^&i
SortUtil.swap(data,l,j); 74K)aA
X JY5@I.
if((l-i)>THRESHOLD){ vv+D*e&<
stack[++top]=i; *hVb5CS
stack[++top]=l-1;
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} 6b?`:$Cw3)
if((j-l)>THRESHOLD){ P:sAqvH6
stack[++top]=l+1; +z\\VD
stack[++top]=j; XGfzEld2"
} D_d|=i
=fl%8"%N&
} SLkuT`*
file://new InsertSort().sort(data); XHs d-
insertSort(data); } ^"0T-ua
} :peqr!I+K
/** naz:A
* @param data 2;G98H
*/ P,i"&9 8
private void insertSort(int[] data) { S%kS#U${|
int temp; &p5&=zV}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {j?7d; 'j
} %>Bko,ET
} AD]e0_E
} =3*Jj`AV
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} 0[/vQ+O ]2
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归并排序: $uCiXDKCq
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package org.rut.util.algorithm.support; tBseqS3<
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import org.rut.util.algorithm.SortUtil; uPkb, :6~Z
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/** u_.HPA
* @author treeroot ]:&n-&@L
* @since 2006-2-2 iJ)0Y~
* @version 1.0 ivfXat-
*/ #{x5L^v>]
public class MergeSort implements SortUtil.Sort{ @l~7x
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/* (non-Javadoc) zPVd(V~(T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KmQ^?Ad-C
*/ LeSHRoD
public void sort(int[] data) { lUv =7"
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int[] temp=new int[data.length]; SK+@HnKd
mergeSort(data,temp,0,data.length-1); \~>e_;
} ExCM<$,
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private void mergeSort(int[] data,int[] temp,int l,int r){ R:/ha(+
int mid=(l+r)/2; WmNYO,>
if(l==r) return ; uEx9-,!
mergeSort(data,temp,l,mid); -`7$Qu2
mergeSort(data,temp,mid+1,r); nUc;/
for(int i=l;i<=r;i++){ txq~+'A:+
temp=data; G2]^F Y
} /s|{by`we4
int i1=l; 3OP.12^
int i2=mid+1; p0M=t-
for(int cur=l;cur<=r;cur++){ (#o t^
if(i1==mid+1) KiAcA]0
data[cur]=temp[i2++]; O8lFx_N7Q
else if(i2>r) n 'K6vW3
data[cur]=temp[i1++]; FLZS K:3B]
else if(temp[i1] data[cur]=temp[i1++]; =&7@<vBpy
else =i>\2J%'R
data[cur]=temp[i2++]; Q[PK`*2)
} \dcdw*v@
} kUa)smh
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} ES}. xZ#~
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改进后的归并排序: /r^[a,Q#x
s+,&|;Q
package org.rut.util.algorithm.support; m'x;,xfY&F
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import org.rut.util.algorithm.SortUtil; %d;<2b0
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/** .9h)bf+
* @author treeroot 5G(E&>~
* @since 2006-2-2 t> .
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* @version 1.0 DM),|Nq"
*/ c?K~/bx.
public class ImprovedMergeSort implements SortUtil.Sort { Ei5 wel6!
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private static final int THRESHOLD = 10; s;Y<BD
^.goO]
/* Izo! rC
* (non-Javadoc) Zx{96G+1
* bik*ZC?E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K2rzhHfb
*/ T8XY fcc*h
public void sort(int[] data) { 3o6RbW0[
int[] temp=new int[data.length]; |P~;C6sf
mergeSort(data,temp,0,data.length-1); ?6P.b6m}0
} *(QH{!-$s
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private void mergeSort(int[] data, int[] temp, int l, int r) { #NN ewzC<*
int i, j, k; OBOwz4<
int mid = (l + r) / 2; =o^|b ih
if (l == r) WeMAe
w/d
return; sx
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if ((mid - l) >= THRESHOLD) A:# k
mergeSort(data, temp, l, mid); DBs DkkB{
else M#,Q
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insertSort(data, l, mid - l + 1); j6g@tx^)'
if ((r - mid) > THRESHOLD) 8=;k"
mergeSort(data, temp, mid + 1, r); 'bu )M1OLi
else >t <pFh
insertSort(data, mid + 1, r - mid); OP! R[27>
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for (i = l; i <= mid; i++) { p
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temp = data; U \oy8FZ
} kV&9`c+
for (j = 1; j <= r - mid; j++) { aeP[+ I9
temp[r - j + 1] = data[j + mid]; 9&Ne+MY^%
} %Mn.e a
int a = temp[l]; 1n=_y o
int b = temp[r]; sL^yB
for (i = l, j = r, k = l; k <= r; k++) { <
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if (a < b) { +K~NV?c
data[k] = temp[i++]; ^,8R,S\}$
a = temp; \Kavw
} else { ^G1%6\We
data[k] = temp[j--]; Yu3zM79'k
b = temp[j]; ~i~%~doa
} K@u&(}
} m:+8J,jW
} gfa[4
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/** uQqWew8l+
* @param data Pbu{'y3J
* @param l v?:: |{
* @param i kH948<fk3
*/ [xZU!=
private void insertSort(int[] data, int start, int len) { ) R2XU
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); OJO!FH)
} SOf{Hx0C6
} ZKpvDH'
} y9l*m~
} O4iC]5@
sLL7]m}
堆排序: /JJw 6[N
n,'OiVl[
package org.rut.util.algorithm.support; h9s >LY
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import org.rut.util.algorithm.SortUtil; K>/%X!RW
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/**
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* @author treeroot NjuiD].
* @since 2006-2-2 R^#@lI~
* @version 1.0 tt_o$D~kg
*/ M8&}j
public class HeapSort implements SortUtil.Sort{ vH[47Cv G5
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +IFw_3$
*/ /=?x{(B>
public void sort(int[] data) {
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MaxHeap h=new MaxHeap(); N)2f7j4C&
h.init(data); Z.PBu|Kx
for(int i=0;i h.remove(); V$`Gwr]|n
System.arraycopy(h.queue,1,data,0,data.length); IM@tN L
} ?~e3&ux
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private static class MaxHeap{ J3RB]O_
<O<LYN+(
void init(int[] data){ A^ \.Z4=d"
this.queue=new int[data.length+1]; 4u;9J*r4
for(int i=0;i queue[++size]=data; */qtzt
fixUp(size); 4,Ic}CvM
} \nNXxTxX!
} dihjpI_
}yn0IWVa
private int size=0; kRJ4-n^@><
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private int[] queue; eV^d6T$
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public int get() { D/y bFk
return queue[1]; [lzN !!B!
} op2Of<{h
F9"w6;hh
public void remove() { xM >W2
SortUtil.swap(queue,1,size--); _gj&$zP
fixDown(1); ;*TIM%6#
} 1/+C5Bp*
file://fixdown {$D,?V@%_
private void fixDown(int k) { >et-{(G
int j; =ac_,]z
while ((j = k << 1) <= size) { tC?=E#3V
if (j < size %26amp;%26amp; queue[j] j++; n:
ui
if (queue[k]>queue[j]) file://不用交换 N?Q+>
break; yF}OfK?0f
SortUtil.swap(queue,j,k); #p(h]T32
k = j; Fxs;Fp
} ;ea]$9
} z;f2*F
private void fixUp(int k) { pIV-kI:w
while (k > 1) { olB)p$aH#
int j = k >> 1; &F:IIo7
if (queue[j]>queue[k]) \*hrW(
break; PX:'/{V
SortUtil.swap(queue,j,k); Ks^6.)
k = j; (_kp{0r#
} GE;e]Jkjn
} 'VyM{:8
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} h`
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} NL=|z=q
C
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SortUtil: J?@DGp+t
O4\Z!R60g
package org.rut.util.algorithm; EKEjv|_)
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import org.rut.util.algorithm.support.BubbleSort; _
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import org.rut.util.algorithm.support.HeapSort; k(>h^
import org.rut.util.algorithm.support.ImprovedMergeSort; o./.Q9e7
import org.rut.util.algorithm.support.ImprovedQuickSort; y.5/?{GL
import org.rut.util.algorithm.support.InsertSort; }VS3L_
;}/
import org.rut.util.algorithm.support.MergeSort; oF9
-&
import org.rut.util.algorithm.support.QuickSort; s4Sd>D7
import org.rut.util.algorithm.support.SelectionSort; KH)D08
import org.rut.util.algorithm.support.ShellSort; oVA?J%EK
N7'OPTKt&
/** Ds#/
* @author treeroot 1wzqGmjmt
* @since 2006-2-2 E#J';tUQ
* @version 1.0 Wt)Drv{@ {
*/ ;AR{@Fu.
public class SortUtil { #/"8F O%~p
public final static int INSERT = 1; WV3|?,y]qm
public final static int BUBBLE = 2; F|Mi{5G%
public final static int SELECTION = 3; ?]fF3 SJk
public final static int SHELL = 4; 2XTPBZNe
public final static int QUICK = 5; bmN q[}
public final static int IMPROVED_QUICK = 6; 7{e{9QbJ4
public final static int MERGE = 7; H gTUy[(
public final static int IMPROVED_MERGE = 8; HX'FYt/?t
public final static int HEAP = 9; :q8b;*:
UNijFGi
public static void sort(int[] data) { =PRx?q`d
sort(data, IMPROVED_QUICK); $vHU$lZ/W
} Zfk*HV#\
private static String[] name={ R1nJUOE4w^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]{"Br$
}; LmlXMia
E$W{8?:{
private static Sort[] impl=new Sort[]{ w%WF-:u7|
new InsertSort(), }X x(^Zh
new BubbleSort(), A(?\>X
9g
new SelectionSort(), 1(|D'y#
new ShellSort(), IG(?xf\C
new QuickSort(), X37 L\e[c
new ImprovedQuickSort(), P\8@g U!uk
new MergeSort(), FX9F"42@
new ImprovedMergeSort(), SH*C"
new HeapSort() :[ k4Z]t8
}; +k
dT(7
u@ jX+\
public static String toString(int algorithm){ W_m"ySQs
return name[algorithm-1]; g{W;I_P^9
} [SJ6@q
R@Gq)P9?
public static void sort(int[] data, int algorithm) { &]
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impl[algorithm-1].sort(data); u0P)7~%
} .sQ=;w/ZA
R[49(>7H4
public static interface Sort { k>t)g-,2
public void sort(int[] data); "ZTTg>r
} |
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)o\jJrVDf
public static void swap(int[] data, int i, int j) { 'V8N
int temp = data; +?p.?I
data = data[j]; 4w#``UY)'
data[j] = temp; 3 ?Y|
} +C1QY'>I
} {]"]uT#