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。 ,0Zn hS)kq
插入排序: -WUYE
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package org.rut.util.algorithm.support; }Hz-h4Z
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import org.rut.util.algorithm.SortUtil; ,GX~s5S8
/** jAK{<7v4U
* @author treeroot #tZf>zrs
* @since 2006-2-2 AD@PNM
* @version 1.0 I/Jp,~JT*
*/ r%l%yCH
public class InsertSort implements SortUtil.Sort{ d=Do@)
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/* (non-Javadoc) c,q"}nE8w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HJ qQlEq
*/ z"K(
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public void sort(int[] data) { q{GSsDo-:V
int temp; JYd7@Msfc
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }[z<iij4
} v1r_Z($
} b!]0mXU
} s$Zq/l$1x
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} ^QAiySR`0
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冒泡排序: n`)7Y`hBhP
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package org.rut.util.algorithm.support; Ao":9r[V
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import org.rut.util.algorithm.SortUtil; ]1?=jlUl
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/** M{xVkXc>
* @author treeroot 9U)t@b
* @since 2006-2-2 o}=.
* @version 1.0 "]m*816'
*/ sc8DY!|OYN
public class BubbleSort implements SortUtil.Sort{ CofH}-
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/* (non-Javadoc) 3}4p_}f/[4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zq;DIWPIoJ
*/ &G/|lv>j
public void sort(int[] data) { ole|J
int temp; y?#9>S >:\
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); A/"}Y1#qX\
} -~][0PVL9
} ,?k%jcR
} _(6`{PWY
} ]G0dS
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} 0)AM-/"
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选择排序: HK0::6n{
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package org.rut.util.algorithm.support; W7L+8LU;
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import org.rut.util.algorithm.SortUtil; Kej|1g1f
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/** JoCA{Fa}
* @author treeroot -|}%~0)/bH
* @since 2006-2-2 $_C+4[R?
* @version 1.0 URK!W?3c
*/ 2@ 9pr
public class SelectionSort implements SortUtil.Sort { Sty!atEWT
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/* R-pH Quu3
* (non-Javadoc) u 1ZJHry
* mX&xn2}qZ"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hz?!BV0
*/ P8wy*JvT
public void sort(int[] data) { ptpW41t}^
int temp; oYz!O]j;a
for (int i = 0; i < data.length; i++) { TZ_rsj/t
int lowIndex = i; `c"4PU^
for (int j = data.length - 1; j > i; j--) { Yb[n{.%/g
if (data[j] < data[lowIndex]) { d/{Q
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lowIndex = j; \=!H 2M
} 5`{vE4A]q
} p jKt:R}
SortUtil.swap(data,i,lowIndex); X>8-`p
} s`hav
} J&eAL3"GF
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} 74K)aA
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Shell排序: vv+D*e&<
3;*z3;#}
package org.rut.util.algorithm.support; /_V'DJV
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import org.rut.util.algorithm.SortUtil; jfUJ37zNZr
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/** +UxI{,L
* @author treeroot z% V* K
* @since 2006-2-2 4\M8BRuE
* @version 1.0 }[ ].\G\G
*/ eZg$AOpU
public class ShellSort implements SortUtil.Sort{ L[9OVD
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/* (non-Javadoc) P##Z[$IJ3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #?9Q{0e
*/ uBmxh%]C~
public void sort(int[] data) { }A|))Ao|
for(int i=data.length/2;i>2;i/=2){ (w+%=z"M
for(int j=0;j insertSort(data,j,i); I:#Ok+
} S5N@\ x
} Is13:
insertSort(data,0,1); nv"G;W
} {Eu'v$c!
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UR
/** IX9K.f
* @param data Z>8eD|m%2
* @param j .Y1bY :=
* @param i 2FGx _Y
*/ 2MuO*.9D
private void insertSort(int[] data, int start, int inc) { d.`&0
int temp; -vV'Lw(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3DW3LYo{
} 2F1ZAl
} Y0@yD#,0~
} *Bs^NU.
#vQ?
} QY@u}&m%o
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快速排序: d$K=c1
zmI5"K"'F
package org.rut.util.algorithm.support; XA1f' Kk
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import org.rut.util.algorithm.SortUtil; HA!t$[_Ve
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/** xP{-19s1]
* @author treeroot D`Gt
* @since 2006-2-2 x=-0 zV
* @version 1.0 :.$"kXm^
*/ ?;
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public class QuickSort implements SortUtil.Sort{ )lh8
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/* (non-Javadoc) h4(JUio
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DLi?'K3t
*/ Vclr2]eV4O
public void sort(int[] data) { EMlIxpCn:
quickSort(data,0,data.length-1); %c X"#+e
} M)JADX
private void quickSort(int[] data,int i,int j){ +I52EXo
int pivotIndex=(i+j)/2; rB%y6P B
file://swap s qpGrW.
SortUtil.swap(data,pivotIndex,j); )11W)G`w
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int k=partition(data,i-1,j,data[j]); ;,XyN+2H
SortUtil.swap(data,k,j); ;/'|WLI9
if((k-i)>1) quickSort(data,i,k-1); tz4
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if((j-k)>1) quickSort(data,k+1,j); ,
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} =g~W%})
/** +tt9R_S
* @param data )eYDQA>J
* @param i Qz+sT6js-
* @param j jl}$HEI5m}
* @return :.uk$jx
*/ 8o|P&q(v*
private int partition(int[] data, int l, int r,int pivot) { ,Ff n)+
do{ #?Mj$ZB
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b5pMq$UVL
SortUtil.swap(data,l,r); \a))
} uZIJoT
while(l SortUtil.swap(data,l,r); 8>N wCjN
return l; x<ax9{
} 3;_
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} LA4<#KP
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改进后的快速排序: [2
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package org.rut.util.algorithm.support; %NajFjBI
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import org.rut.util.algorithm.SortUtil; >(3\kiYS
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/** 3o6RbW0[
* @author treeroot $`ztiVu3
* @since 2006-2-2 ?6P.b6m}0
* @version 1.0 jL>:>r
*/ 1 ] #9
public class ImprovedQuickSort implements SortUtil.Sort { *Zbuq8>
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private static int MAX_STACK_SIZE=4096; kl}Xmw{tJ
private static int THRESHOLD=10; *1A&'T2
/* (non-Javadoc) >jx.R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3fr ^ T
*/ `rb>K
public void sort(int[] data) { 4(cJ^]wb ^
int[] stack=new int[MAX_STACK_SIZE]; Z4hLdHo_
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int top=-1; >t <pFh
int pivot; OP! R[27>
int pivotIndex,l,r; #E$X,[ZFo
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stack[++top]=0; ^6;V}2>v}
stack[++top]=data.length-1; 3l4NC03I&
k< j"~S1
while(top>0){ x,8<tSW)Z
int j=stack[top--]; ;inzyFbL=
int i=stack[top--]; p_2pU)%
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pivotIndex=(i+j)/2; u\1>gDI )|
pivot=data[pivotIndex]; H !)=y
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SortUtil.swap(data,pivotIndex,j); +K~NV?c
^,8R,S\}$
file://partition \Kavw
l=i-1; ^G1%6\We
r=j; OCV+h'
do{ l7}g^\I
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4Ysb5m)u
SortUtil.swap(data,l,r); 3x@<Z68S
} )9v`f9X){
while(l SortUtil.swap(data,l,r); `BY&>WY[
SortUtil.swap(data,l,j); =!b6FjsiG
6^)}PX= *
if((l-i)>THRESHOLD){ v?:: |{
stack[++top]=i; kH948<fk3
stack[++top]=l-1; [xZU!=
} ) R2XU
if((j-l)>THRESHOLD){ $V>yXhTh
stack[++top]=l+1; r[txlQI9
stack[++top]=j; +T{'V^
} #{J,kcxS
5|8^9Oe5
} 1wj:aD?g
file://new InsertSort().sort(data); If-_?wZe
insertSort(data); 1zxq^BI
} 0CExY9@Wq
/** ~I=Y{iM
* @param data ,*svtw:2')
*/ !Ng=Yk>3
private void insertSort(int[] data) { Ms^dRe)
int temp; 2 QTZwx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wBSQ:f]g
} [bz T&o
} 3_$w|ET
} jXg
BJ}D%nm}
} P9Q~r<7n
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归并排序: p#P~Q/;
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package org.rut.util.algorithm.support; BU Z
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import org.rut.util.algorithm.SortUtil; L1{GL #qV
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/** ?~e3&ux
* @author treeroot cre;P5^E
* @since 2006-2-2 J3RB]O_
* @version 1.0 7[#yu 2
*/ A^ \.Z4=d"
public class MergeSort implements SortUtil.Sort{ ;,h/
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/* (non-Javadoc) YIRZ+H<Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~uWOdm-"[
*/ 13k
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public void sort(int[] data) { (2ot5x}`j
int[] temp=new int[data.length]; g|X ;ahTT
mergeSort(data,temp,0,data.length-1); friWW^
} M~e0lg8
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private void mergeSort(int[] data,int[] temp,int l,int r){ thlY0XCq,%
int mid=(l+r)/2; ;|T!#@j
if(l==r) return ; &)d$t'7p
mergeSort(data,temp,l,mid); BR`ygrfe
mergeSort(data,temp,mid+1,r);
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for(int i=l;i<=r;i++){ y&~w2{a
temp=data; Vv.r8IGYm
} :ue:QSt(u
int i1=l; * |.0Myjo
int i2=mid+1; `4?~nbz
for(int cur=l;cur<=r;cur++){ =WbOwI)u
if(i1==mid+1) Bq\F?zk<
data[cur]=temp[i2++]; (IqZ@->nw
else if(i2>r) /1=4"|q>h'
data[cur]=temp[i1++]; Rd
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else if(temp[i1] data[cur]=temp[i1++]; H9XvO
else ~/pzxo$
data[cur]=temp[i2++]; Qd _6)M-
} 'NjzgZ~]P
} 7,qYV}
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} }_/Hdmmx
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改进后的归并排序: gN8hJG'0
Z%zj";C
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package org.rut.util.algorithm.support; AN:sQX`
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import org.rut.util.algorithm.SortUtil; z}QwP~Z
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/** aimarU
* @author treeroot qU2~fNY
* @since 2006-2-2 ,_aM`%q?Fj
* @version 1.0 <P[T!gST
*/ bK"SKV
public class ImprovedMergeSort implements SortUtil.Sort { 1d"Z>k:mn
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private static final int THRESHOLD = 10; h+p*=|j`
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/* >WJf=F`_H
* (non-Javadoc) )UgX3+@
* (s<Dd2&.H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;7]u!Q
*/ iX u]e;6
public void sort(int[] data) { RpWTpT1
int[] temp=new int[data.length]; +y7;81ND
mergeSort(data,temp,0,data.length-1); 6*4's5>?D
} }jt?|dl1
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private void mergeSort(int[] data, int[] temp, int l, int r) { ^'CPM6J
int i, j, k; n~"$^Vr
int mid = (l + r) / 2; <?-YTY|
if (l == r) `g8E1-]l
return; f0<hE2
if ((mid - l) >= THRESHOLD) 2]GdD*
mergeSort(data, temp, l, mid); =ph&sn$;L
else CTt vyr
insertSort(data, l, mid - l + 1); 6R-&-4
if ((r - mid) > THRESHOLD) YBYZ=,"d
mergeSort(data, temp, mid + 1, r); K8n4oz#z
else >EL)X
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insertSort(data, mid + 1, r - mid); 'E/*d2CDM(
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for (i = l; i <= mid; i++) { H9h@ sSg
temp = data; IEKU-k7}Z
} #_lt~^6
for (j = 1; j <= r - mid; j++) { C{sLz9
temp[r - j + 1] = data[j + mid]; S(S#
} xq-17HKs
int a = temp[l]; 7^wc)E^H
int b = temp[r]; gmIqT
f
for (i = l, j = r, k = l; k <= r; k++) { ?88[|;b3
if (a < b) { .)}@J5P)
data[k] = temp[i++]; tQZs.1=z
a = temp; &PkLp4mQ
} else { p
raaY}}
data[k] = temp[j--]; }I3gU
b = temp[j]; G+B~Ix-
} Z3>N<u8)
} a#mNE*Dg
} F'g Vzf
]\/tVn.'
/** ]| N3eu
* @param data ^~{$wVGa
* @param l a+hd(JX0~
* @param i o]nw0q?
*/ `cPywn@uGZ
private void insertSort(int[] data, int start, int len) { rl9.]~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?$f)&O
} uwRr LF
} fLV"T_rk
} 0ye!R
} 4}`
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堆排序: (D@A74q\'
/R>nr"
package org.rut.util.algorithm.support; e[sK@jX6
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import org.rut.util.algorithm.SortUtil; v9Xp97J2
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/** e]jH+IR:>
* @author treeroot Bo<>e~6P
* @since 2006-2-2 3 ?Y|
* @version 1.0 XU+<?%u}z
*/ vG \a1H
public class HeapSort implements SortUtil.Sort{ SQeRSz8bK4
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b.0.
/* (non-Javadoc) `ptj?6N-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n@ w^V
*/ sAg Kg=)
public void sort(int[] data) { P&Pj>!T5
MaxHeap h=new MaxHeap(); ]skkoM
h.init(data); ?"z]A7<Hj
for(int i=0;i h.remove(); mxb06u_
System.arraycopy(h.queue,1,data,0,data.length); n}s~+USZX
} 3Tn)Z1o
5 H#W[^s"
private static class MaxHeap{ YeF1C/'hy
GTHkY*
void init(int[] data){ 0afei4i~N
this.queue=new int[data.length+1]; 3!5Ur&
for(int i=0;i queue[++size]=data; Fg Lrb#
fixUp(size); _fZZ_0\Q
} WK="J6K5
} *^([ ~[
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private int size=0; 4t)%<4
%pXAeeSY`;
private int[] queue; <C9 XX~
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public int get() {
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return queue[1]; 0rGSH*(
} ' B
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public void remove() { W>q HFoKa
SortUtil.swap(queue,1,size--); lN9=TxH1(;
fixDown(1); c)@>zto#
} c5|:,wkx
file://fixdown "B_K
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private void fixDown(int k) { cUDoN`fSl,
int j; ho>k$s?
while ((j = k << 1) <= size) { QdLYCR4f
if (j < size %26amp;%26amp; queue[j] j++; VXR]"W=
if (queue[k]>queue[j]) file://不用交换 *xp\4;B
break; }E`dZW*!!
SortUtil.swap(queue,j,k); G;f/Tch
k = j; ' oFxR003
} d|T!v
} gocrjjAHk
private void fixUp(int k) { "*,XL
uv>
while (k > 1) { QXF
aAb=(7
int j = k >> 1; 5=e@d:Sz
if (queue[j]>queue[k]) WcC?8X2
break; ZNYH#mJX*
SortUtil.swap(queue,j,k); p$ bnK]
k = j; [frq
'c
} ",{ibh)g$`
} o[E_Ge}g8
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} KFa_
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} 0@2mXO9f"
H5D*|42
SortUtil: yjJ5P`j]
g@\fZTO
package org.rut.util.algorithm;
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@-OnHE
import org.rut.util.algorithm.support.BubbleSort; KRjV}\}
import org.rut.util.algorithm.support.HeapSort; 4e;QiTj
import org.rut.util.algorithm.support.ImprovedMergeSort; =}PdH`S
import org.rut.util.algorithm.support.ImprovedQuickSort; BcD&sQ2F
import org.rut.util.algorithm.support.InsertSort; #$3yz'"QF
import org.rut.util.algorithm.support.MergeSort; G<M:Ak+~
import org.rut.util.algorithm.support.QuickSort; 5XLs} :
import org.rut.util.algorithm.support.SelectionSort; nk3y"ne7
import org.rut.util.algorithm.support.ShellSort; *Sh^J+j
nNXgW
/** *'"^NSJ
* @author treeroot |AC1\)2tT
* @since 2006-2-2 '_b.\_s-d
* @version 1.0 %7O?JI[
*/ uIU5.\"s
public class SortUtil { ki>~H!zB
public final static int INSERT = 1; #2iD'>bQ
public final static int BUBBLE = 2; v`1,4,;,qs
public final static int SELECTION = 3; |a{Q0:
public final static int SHELL = 4; )/t?!T.[
public final static int QUICK = 5; LL$_zK{
public final static int IMPROVED_QUICK = 6; Ge d [#Q
public final static int MERGE = 7; R-^96fFBy
public final static int IMPROVED_MERGE = 8; r\;ut4wy
public final static int HEAP = 9; YIR
R=qpn
sl*5Y#,|1
public static void sort(int[] data) { j5I`a 1j`
sort(data, IMPROVED_QUICK); hR5_+cuIp
} "*O4GPj
private static String[] name={ 2S' {!A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $H$j-)\D
}; -|rLs$V1r
!;_H$r0
private static Sort[] impl=new Sort[]{ `yF`x8
new InsertSort(), -X+H2G
new BubbleSort(), wb Iq&>p
new SelectionSort(), kF>o.uSV
new ShellSort(), {)AMw q
new QuickSort(), >hH0Q5aL
new ImprovedQuickSort(), ,ZS6jZ
new MergeSort(), !a$ D4(`v
new ImprovedMergeSort(), mXUYQ82
new HeapSort() -Z-IF#%
}; ](F#`zUQ
B^%1Rpcn
public static String toString(int algorithm){ -+t]15
return name[algorithm-1]; *%vwM7
} `>o?CIdp
{,OS-g
public static void sort(int[] data, int algorithm) { TE )gVE]
impl[algorithm-1].sort(data); `mT$s,:h
} s}j1"@
7OWbAu;
public static interface Sort { ~afg)[(
public void sort(int[] data); q$G,KRy/
} jgS%1/&
]59i>
public static void swap(int[] data, int i, int j) { T;L>P[hNn
int temp = data; hm<}p&!J
data = data[j]; N8`?t5
data[j] = temp; Z0De!?ALV\
} 2DD:~Tbi
} 7 h y&-<