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。 HKv:)h{?
插入排序: !FipKX
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package org.rut.util.algorithm.support; | ctGxS9
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import org.rut.util.algorithm.SortUtil; .x$+R%5U
/** J6Hw05%0=
* @author treeroot .
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* @since 2006-2-2 ]
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* @version 1.0 ?'CIt5n+\{
*/ pA"x4\s
public class InsertSort implements SortUtil.Sort{ |4YDvDEJi
:N\*;>
/* (non-Javadoc) !cE>L~cza
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kLR4?tX!
*/ m46Q%hwV
public void sort(int[] data) { sI/Hcm
int temp; \
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oc?,8I[P5
} Ge@./SGT
} d{hbgUSj
} D#x D-c
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} c?CwxI_b8
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冒泡排序: x%B^hH;W
@Rj&9/\L
package org.rut.util.algorithm.support; =DvFY]9{
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import org.rut.util.algorithm.SortUtil; e{:P!r
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/** (
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* @author treeroot 5,I'6$J
* @since 2006-2-2 'Z+w\0}@
* @version 1.0 %lbSV}V)
*/ IKKd
public class BubbleSort implements SortUtil.Sort{ L-^vlP)Vu
3^q,'!PfB
/* (non-Javadoc) yX$I<L<Suz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O;ZU{VY
*/ 7]d396%
public void sort(int[] data) { Yb%H9A
int temp; j*x8K,fN
for(int i=0;i for(int j=data.length-1;j>i;j--){ _Z.lr\
if(data[j] SortUtil.swap(data,j,j-1); ;E(gl$c:
} WSn^P~vC
} h/5n+*x(
} Fo3[KW)8I
} `^9 Zbwq
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} dI5Z*"`R9
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选择排序: mG7Wu{~=U
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package org.rut.util.algorithm.support; yAU[A
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import org.rut.util.algorithm.SortUtil; :t?9$ dL
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/** N$M#3Y;
* @author treeroot Z%D*2wm4
* @since 2006-2-2 e-,U@_B
* @version 1.0 xM9EO(u
*/ F}DdErd!f
public class SelectionSort implements SortUtil.Sort { sVZb[|zSri
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/* !
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* (non-Javadoc) M-K<w(,X
* (;$J5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vg#s
*/ ^5qX+!3r{
public void sort(int[] data) { ;
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int temp; -?!|W-}@G=
for (int i = 0; i < data.length; i++) { "L1cHP~d
int lowIndex = i; ]3
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for (int j = data.length - 1; j > i; j--) { SGZOfTcY
if (data[j] < data[lowIndex]) { Z=sy~6m+v
lowIndex = j; ta> g:
} Dp6]!;kx
} gd]vrW'wj
SortUtil.swap(data,i,lowIndex); 2*vOo^f
} XrYMv
WT
} xH;qJRHa
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} i@6MO'y
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Shell排序: ~cz]Rhq
Dn) =V.
package org.rut.util.algorithm.support; &9$0v" `H
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import org.rut.util.algorithm.SortUtil; B~cq T/\?
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/** Vl{CD>$,
* @author treeroot /u<lh.
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* @since 2006-2-2 K7FuMB
* @version 1.0 i6-q%%]6
*/ "FT5]h
public class ShellSort implements SortUtil.Sort{ W8,XSUl
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/* (non-Javadoc) mn{8"@Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f~jx2?W
*/ u6'vzLmM
public void sort(int[] data) { @CP"AYB #
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); q]0a8[]3
} ';+;
} nSz Fs(]f
insertSort(data,0,1); g(33h2"
} ^TyusfOz
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/** %/,PY>:|
* @param data XLwbA4ORq
* @param j ];R5[%:5
* @param i u'd+:uH
*/ f62z9)`^
private void insertSort(int[] data, int start, int inc) { mq[(yR
int temp; WHBQA\4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZFOYYht
} UG s
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} I.fV_
H^
} ibl^A=
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} -DlKFN
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快速排序: oIt.Pc~;'#
Ig'Y]%Z0
package org.rut.util.algorithm.support; K)]7e?:Wu
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import org.rut.util.algorithm.SortUtil; WVftLIJ
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/** U_ V0
* @author treeroot 8d-; ;V
* @since 2006-2-2 "monuErg&
* @version 1.0 1T%Y:0
*/ kN`[Q$B
public class QuickSort implements SortUtil.Sort{ 0(Vbji
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/* (non-Javadoc) {v+i!a'+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &s"&rFFO[
*/ wHBkaPO!
public void sort(int[] data) { a{L`C"rJ
quickSort(data,0,data.length-1); K-)*S\<}
} 5hB&]6n
private void quickSort(int[] data,int i,int j){ ~{n_rKYV
int pivotIndex=(i+j)/2; %+w>`k3(N
file://swap m1gJ"k6
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SortUtil.swap(data,pivotIndex,j); :)c >5
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int k=partition(data,i-1,j,data[j]); n8w|8[uV^
SortUtil.swap(data,k,j); tRS^|??
if((k-i)>1) quickSort(data,i,k-1); Ve2z= 6(
if((j-k)>1) quickSort(data,k+1,j); ,YSQog
k1L GT&
} }Tu_?b`RUm
/** nqBZp N^
* @param data bFVz ;
* @param i 9|v
* @param j vROl}s;
* @return 8doT`rI1
*/ UX41/# 4
private int partition(int[] data, int l, int r,int pivot) { .Y&_k
do{ 7WiVor$g-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~1S7\e7{
SortUtil.swap(data,l,r); itm;, Sbg
} B+jT|Y'
while(l SortUtil.swap(data,l,r); $sU?VA'h
return l; =P'=P0G
} !}"npUgE
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} iEr|?,
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改进后的快速排序: $P^=QN5Bb
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package org.rut.util.algorithm.support; N ]}Re$5
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import org.rut.util.algorithm.SortUtil; R=i$*6}a
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/** <s9Sx>Zb
* @author treeroot GL@s~_;T6
* @since 2006-2-2 K
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* @version 1.0 3_fLafA
*/ cK(}B_D$
public class ImprovedQuickSort implements SortUtil.Sort { IQGIU3O
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private static int MAX_STACK_SIZE=4096; j6/ 3p|E
private static int THRESHOLD=10; k5w+{iOh
/* (non-Javadoc) |QAmN>7U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8<^[xe
*/ zO2<Igb
public void sort(int[] data) { 5>j,P
int[] stack=new int[MAX_STACK_SIZE]; (^qcX;-
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int top=-1; #E^ %h
int pivot; pP{b!1
int pivotIndex,l,r; e:AB!k^xp$
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stack[++top]=0; FDbx"%A
stack[++top]=data.length-1; $
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while(top>0){ 5irewh'R
int j=stack[top--]; >Eik>dQ a
int i=stack[top--]; eY\tO"Hc
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pivotIndex=(i+j)/2; ^P"t
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pivot=data[pivotIndex]; I4m)5G?O2
2}[rc%tV:?
SortUtil.swap(data,pivotIndex,j); $]|_xG-6{
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file://partition tK g%5;v
l=i-1; xW/JItF
r=j; Bpo~x2p
do{ XwX1i!'54
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "y
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SortUtil.swap(data,l,r); +ywWQ|V
} m;KMr6sO
while(l SortUtil.swap(data,l,r); aFyNm@a
SortUtil.swap(data,l,j); JR
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if((l-i)>THRESHOLD){ 3`^]#Dh
stack[++top]=i; U=Z@Ipu5T
stack[++top]=l-1; %04>R'mN
} Y
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if((j-l)>THRESHOLD){ `"GD'Oa
stack[++top]=l+1; nqgfAQsE)
stack[++top]=j; w V;y]'
} #xYkG5`lm
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} $T;3*D 90
file://new InsertSort().sort(data); YyK9UZjI
insertSort(data); aFIet55o
} #g ~~zwx/N
/** @{+*ea7M(`
* @param data u>k;PUH4
*/ ynZ!
private void insertSort(int[] data) { /I[cj3}{+f
int temp; -d_FB?X
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j|lg&kN
} eC[g"Ef
} o|^0DYb
} '?yZ,t
}!n<L:njX
} {sX*SbJt
? 1Z\=s
归并排序: tE>3.0U0Q
2q2w o&uK
package org.rut.util.algorithm.support; .?AtW:<*I
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import org.rut.util.algorithm.SortUtil; 9
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/** IEC:zmkn
* @author treeroot eHqf3f
* @since 2006-2-2 yQou8P=%
* @version 1.0 t9 &O0tpe
*/ }pTw$B
public class MergeSort implements SortUtil.Sort{ ^$?8!WE
7-^df0
/* (non-Javadoc) <408lm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ I62Yg
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public void sort(int[] data) { P-+ ^YN,
int[] temp=new int[data.length]; fK4laDBTO
mergeSort(data,temp,0,data.length-1); 8 ehC^Cg
} Xk7zXah
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private void mergeSort(int[] data,int[] temp,int l,int r){ )h+JX8K)l
int mid=(l+r)/2; "T~Ps$
if(l==r) return ; <U1uuOt
mergeSort(data,temp,l,mid); _r^&.'q
mergeSort(data,temp,mid+1,r); }d6g{`
for(int i=l;i<=r;i++){ QL|Vke:N4
temp=data; /Zm@.%.
} <a$cB+t
int i1=l; YRC`2)_'
int i2=mid+1; NA0hQGN}
for(int cur=l;cur<=r;cur++){ ry7(V:ic
if(i1==mid+1) K.X% Q,XD
data[cur]=temp[i2++]; (\WePOy&
else if(i2>r) {/n$Y|TIQt
data[cur]=temp[i1++]; v'_tna6`O
else if(temp[i1] data[cur]=temp[i1++]; I"DV}jg6|
else K"g[%O<
data[cur]=temp[i2++]; #jDO?Y Sa
} 55,vmDd
} aQRZyE}
)'fIrBT
} 4~o\Os+8
YVs{\1|'
改进后的归并排序: 1XHGW=n
9oGsrClH
package org.rut.util.algorithm.support; sM?DNE^BvW
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import org.rut.util.algorithm.SortUtil; F." L{g
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/** D_, 2z
* @author treeroot #m8Oy|Y9`
* @since 2006-2-2 .(`u'G=
* @version 1.0 #p_ ~L4iW
*/ >!a*wf~]
public class ImprovedMergeSort implements SortUtil.Sort { K0+J!-a]7
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private static final int THRESHOLD = 10; ):.]4n{L
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/* .6/[X`*
* (non-Javadoc) /ox}l<ha
* !).D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3}N:oJI$z
*/ 7J 0!vq
public void sort(int[] data) { E~N}m7kTl/
int[] temp=new int[data.length]; =)y=M!T2
mergeSort(data,temp,0,data.length-1); X7n~Ws&s@
} B*?v`6
3J:!8Gmk
private void mergeSort(int[] data, int[] temp, int l, int r) { P@*whjPmo
int i, j, k; T1e}WJbFE
int mid = (l + r) / 2; DrB=
if (l == r) } O!LTD
return; ;OVJM
qg
if ((mid - l) >= THRESHOLD) OSq"q-Q
mergeSort(data, temp, l, mid); l'o'q7&=z
else gbSZ-
ej
insertSort(data, l, mid - l + 1); nE/T)[1|
if ((r - mid) > THRESHOLD) t`Hwq
mergeSort(data, temp, mid + 1, r); xpSMbX{e
else y#T":jpR
insertSort(data, mid + 1, r - mid); !5{t1 oJ
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for (i = l; i <= mid; i++) { .c BJA&/
temp = data; pX2 Ki^)]
} YE0s5bB6
for (j = 1; j <= r - mid; j++) { ggbew6L$Z
temp[r - j + 1] = data[j + mid]; {@C+Js5
} R%5\1!Fl=G
int a = temp[l]; ';$2j~
int b = temp[r]; vB#3jI
for (i = l, j = r, k = l; k <= r; k++) { &d6'$h:kHb
if (a < b) { vU~#6sl
data[k] = temp[i++]; YZmD:P
a = temp; GMiWS:`;v`
} else { _#-(XQ a
data[k] = temp[j--]; ?)JW}3<.
b = temp[j]; 2^Y1S?g.
} 'rz*mR8
} ;AHa|35\
} lRentNg0b
VxsW3*`
/** r,0> 40^
* @param data p- zLi!
* @param l $XaZqzeVI
* @param i \:O5, wf2
*/ ! .!qJ%
private void insertSort(int[] data, int start, int len) { C96|T>bk
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <.=
} Zcdt\;HKr
} JQ0KXS Nr
} YK_a37E{F
} Bz]64/
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堆排序: :%;K`w
~ZL}j+L/
package org.rut.util.algorithm.support; A;{8\e
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import org.rut.util.algorithm.SortUtil; K);:+s-
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/** )eUb@Eu
* @author treeroot UWmWouA
* @since 2006-2-2 8R-?x/:
* @version 1.0 tl0_as
*/ fr:RiOPn
public class HeapSort implements SortUtil.Sort{ Yuh t<:`
h-#Glse<
/* (non-Javadoc) q/&Z6LJ)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +#n[55d
*/ DBVe69/S
public void sort(int[] data) {
@(oz`|*
MaxHeap h=new MaxHeap(); 8l)^#"ySA
h.init(data); $ V}s3
for(int i=0;i h.remove(); .D>%-
System.arraycopy(h.queue,1,data,0,data.length); \@tt$ m%
} f{ENSUtCrR
ESb
private static class MaxHeap{ %*:-4K
pdmeB
void init(int[] data){ L?0dZY-"
this.queue=new int[data.length+1]; &]uhPx/
for(int i=0;i queue[++size]=data; ,mjwQ6:Ny
fixUp(size); "r.pU(uxt
} xS*f{5Hr8
} Ugrcy7
Z7OWpujCvN
private int size=0; 5C2 *f4|
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private int[] queue; ?JtFiw
Wh 8fC(BE
public int get() { eWcS>N
return queue[1]; e7 5*84
} "y>l2V,4j%
-/KVZ
public void remove() { ])T*T$u
SortUtil.swap(queue,1,size--); "(T@*"vX2
fixDown(1); ;M\H#%G.
} k\1q Jr
file://fixdown d;)Im
"
private void fixDown(int k) { wcB-)Ra
int j; ~#@sZ0/<
while ((j = k << 1) <= size) { \
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if (j < size %26amp;%26amp; queue[j] j++; 3Pkzzyk_|D
if (queue[k]>queue[j]) file://不用交换 rzEE |
break; t$R|lv5<
SortUtil.swap(queue,j,k); wnhac}
k = j; w^z}!/"]u
} #OH# &{H
} b pExYyt
private void fixUp(int k) { wrw~J
while (k > 1) { s+o/:rrxY
int j = k >> 1; 0SA
c1
if (queue[j]>queue[k]) `<C)oF\~f
break; !</5 )B`5:
SortUtil.swap(queue,j,k); "4}{Z)&R2
k = j; d];E99}
} Hi<{c
} rEs,o3h?po
|Pwb7:a3
} [2.pZB
4k<4=E
} xHe<TwkI
uRwIxT2
SortUtil: o#H"tYP
EZE/~$`3
package org.rut.util.algorithm; V+cHL
w6v P
a
import org.rut.util.algorithm.support.BubbleSort; 3[aCy4O
import org.rut.util.algorithm.support.HeapSort; pH'#v]"
import org.rut.util.algorithm.support.ImprovedMergeSort; q_']i6
import org.rut.util.algorithm.support.ImprovedQuickSort; :!'aP\uE
import org.rut.util.algorithm.support.InsertSort; 4LJUO5(y@
import org.rut.util.algorithm.support.MergeSort; |oC&;A
import org.rut.util.algorithm.support.QuickSort; :C_\.pA
import org.rut.util.algorithm.support.SelectionSort; vgo-[^FiP$
import org.rut.util.algorithm.support.ShellSort; rh?!f(_@
97NF*-)N
/** k9'%8(7M:
* @author treeroot 8cF-kfbfZ
* @since 2006-2-2 tDF6%RG
* @version 1.0 ``$At ,m
*/ *5.s@L( VU
public class SortUtil { xSug-
public final static int INSERT = 1; 3m
public final static int BUBBLE = 2; HE7JQP!q
public final static int SELECTION = 3; gO1`zP!9Z
public final static int SHELL = 4; bu,Z'
public final static int QUICK = 5; VQ{}S $jQ
public final static int IMPROVED_QUICK = 6; thl{IU
public final static int MERGE = 7; # ]&=]K1V
public final static int IMPROVED_MERGE = 8; <Y9((QSM4
public final static int HEAP = 9; <s)+V6\E
8'@pX<
public static void sort(int[] data) { W2qW`Ujo{
sort(data, IMPROVED_QUICK); -U'6fx) +
} L&][730
private static String[] name={ z?Hvh
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W9t%:wF
}; sq*d?<:3
bJmVq%>;
private static Sort[] impl=new Sort[]{ +_3>T''_
new InsertSort(), ePP-&V"`"
new BubbleSort(), Xu3o,k
new SelectionSort(), E<>n0",
new ShellSort(), v|<Dc8i+
new QuickSort(), =YE"6iU
new ImprovedQuickSort(), 1 nIb/nY
new MergeSort(), YFy5>*W
new ImprovedMergeSort(), S%R:GZEf_
new HeapSort() :S{[^-"
}; yE.
ZvvQA
@G~T&6E!
public static String toString(int algorithm){ My&h{Qk
return name[algorithm-1]; d_-{-@
} .^X IZ
{UT^pIP\
public static void sort(int[] data, int algorithm) { :%{MMhbx
impl[algorithm-1].sort(data); O\q|b#q}/
} p>96>7w
TGY^,H>J
public static interface Sort { %1 9TJn%J$
public void sort(int[] data); O|O#T.Tg
} [Z`q7ddd^
[mYmrLs6
public static void swap(int[] data, int i, int j) { bP`yLz
int temp = data; .fk!~8b[Q+
data = data[j]; Ha)eeE$
data[j] = temp; 6(f[<V!r
} UW8b(b[-6b
} 9mIq9rQ|*