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。 aDJjVD
插入排序: G^eFS;
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package org.rut.util.algorithm.support; Ga/\kO)x_
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import org.rut.util.algorithm.SortUtil; W0 ,"V'C
/** (H|d 3
* @author treeroot Ia>th\_&
* @since 2006-2-2 9!/1F !
* @version 1.0 l`w|o
*/ x_^OS"h-
public class InsertSort implements SortUtil.Sort{ UOL%tT
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/* (non-Javadoc) mjr{L{H=?+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ."@a1_F|
*/ Y_iF$m/R
public void sort(int[] data) { e+[J[<8
int temp; A.cZa
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z_iyuLRdb
} /iJhCB[QZ
} ?ia[KLt"
} m_O=X8uj"D
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} q,h.W JI
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冒泡排序: 5'L}LT8p@
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package org.rut.util.algorithm.support; d4=u`2w
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import org.rut.util.algorithm.SortUtil; _ .
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/** WOTu"Yj
* @author treeroot ` vmk
* @since 2006-2-2 O%h
97^%k
* @version 1.0 w+TuS).
*/ FXwK9
%
public class BubbleSort implements SortUtil.Sort{ yA )+-
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/* (non-Javadoc) n7YWc5:CaL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u2Z^iY
*/ {(:)
public void sort(int[] data) { .`8,$"`4)
int temp; ?g1.-'
for(int i=0;i for(int j=data.length-1;j>i;j--){ DB=cc
if(data[j] SortUtil.swap(data,j,j-1); |N3CoB
} 4]Nr$FY
} d:WhP_rK9
} fi@+swfc
} S{|)9EKw
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} )C0X]?
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选择排序: ?d`+vHK]>
Vt2=rD4oJk
package org.rut.util.algorithm.support; AS-t][m#
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import org.rut.util.algorithm.SortUtil; &WV 9%fI
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/** I }I/dh
* @author treeroot #AnSjl
* @since 2006-2-2 YU"\Wd[
* @version 1.0 u5|e9(J
*/ ?mUu(D:7D
public class SelectionSort implements SortUtil.Sort { Uwil*Jh
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/* ![C$H5
* (non-Javadoc) &l*dYzqq
* QnAf A%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5}aC'j\
*/ H<Taf%JT
public void sort(int[] data) { Nm.>C4
int temp; H%gD[!^
for (int i = 0; i < data.length; i++) { P9chRy
int lowIndex = i; r:Tb{cA
for (int j = data.length - 1; j > i; j--) { oD2;Tdk
if (data[j] < data[lowIndex]) { \} Szb2
lowIndex = j; 85~h+Q;
} zt%Fvn4/pF
} [gY__
SortUtil.swap(data,i,lowIndex); UR=s{nFd
} 'GoeVq
} *N+aZV}`Z
q%&7J<
} _cs9R%
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Shell排序: QQ8W;x
b:&$x (|
package org.rut.util.algorithm.support; V1U[p3J-S
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import org.rut.util.algorithm.SortUtil; 4V3
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7C
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/** !/Ps}.)A`
* @author treeroot LX&P]{qKS
* @since 2006-2-2 ^$
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* @version 1.0 9\0 K%LL
*/ $yK!Q)e:
public class ShellSort implements SortUtil.Sort{ p~co!d.q/}
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/* (non-Javadoc) 4>#^Pk?Ra
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;a)\5Uy
*/ @zq{#7%z
public void sort(int[] data) { 8{<cqYCR
for(int i=data.length/2;i>2;i/=2){ 1uQf}
for(int j=0;j insertSort(data,j,i); H)+kN'J
} m%\[1|N
} JH;DVPX9z
insertSort(data,0,1); <\mc|p"
} _Q}z 6+_\
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/** .e+UgCwi
* @param data jU~%5R
* @param j KYW1<Wcp
* @param i Q~{@3<yEI
*/ F'*&-l
private void insertSort(int[] data, int start, int inc) { {`zF{AW8q
int temp; $O-, :<HY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); OwaXG/z~
} %%[TM(z
} o$k$
} wQ^a2$Z
.).<L`q
} xU"qB24]=
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快速排序: 2ow\d b
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package org.rut.util.algorithm.support; 4Pdk?vHK;
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import org.rut.util.algorithm.SortUtil; t}gqk'
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/** bb/MnhB
* @author treeroot A'EA !
* @since 2006-2-2 <`q o*__1
* @version 1.0 .D`#a
*/ C%>7mz-v5
public class QuickSort implements SortUtil.Sort{ M(jH"u&f
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/* (non-Javadoc) /B7
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dp+Y?ufr
*/ mY(
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public void sort(int[] data) { ]H[\~J
quickSort(data,0,data.length-1); N-]n>E
} N';lc:Ah~
private void quickSort(int[] data,int i,int j){ B)dynGF8i
int pivotIndex=(i+j)/2; 2ZeL
file://swap D
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SortUtil.swap(data,pivotIndex,j); iH=@``Z
-;*Z!|e9
int k=partition(data,i-1,j,data[j]); Mw.+0R!T
SortUtil.swap(data,k,j); w%\;|y4+
if((k-i)>1) quickSort(data,i,k-1); ZZ5yu* &
if((j-k)>1) quickSort(data,k+1,j); 78-:hk
^S|^1
} tPHiz%
/** '*;rm*n
* @param data ~s_$a8
* @param i ^B9wmxe
* @param j 3!L)7Z/
* @return 'c D"ZVm1
*/ 8<xy*=%
private int partition(int[] data, int l, int r,int pivot) { ffVYlNQ7L
do{ 3R><AFMY?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (" %yV_R
SortUtil.swap(data,l,r); ~/%){t/uLY
} mUbaR
while(l SortUtil.swap(data,l,r); 'z'm:|JW
return l; urB.K<5ZA
} zZHsS$/
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} FzIA>njt
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改进后的快速排序: Y# #J
~Zm(p*\T
package org.rut.util.algorithm.support; 4`F*] Ft
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import org.rut.util.algorithm.SortUtil;
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/** W>y_q[m
* @author treeroot KI{u:Lbi
* @since 2006-2-2 hl+Yr)0\
* @version 1.0 5\J;EWTU
*/ oSoG&4
public class ImprovedQuickSort implements SortUtil.Sort { K\q/JuDfc
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private static int MAX_STACK_SIZE=4096; +!(hd
private static int THRESHOLD=10; |7-tUHMo[
/* (non-Javadoc) HNPr|
(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A VjtK
*/ ov~m?Y]h
public void sort(int[] data) { ~0NZx8qG
int[] stack=new int[MAX_STACK_SIZE]; U
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int top=-1; [% jg;m
int pivot; ZU|nKt<GK
int pivotIndex,l,r; i=4bY[y
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stack[++top]=0; rSk $]E ]Z
stack[++top]=data.length-1; iR-O6*PTC
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while(top>0){ k<qQ+\X
int j=stack[top--]; MqqS3
int i=stack[top--]; a#1X)ot
AN;?`AM;
pivotIndex=(i+j)/2; WA/\x
pivot=data[pivotIndex]; BhjXNf9[
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SortUtil.swap(data,pivotIndex,j); ]Vsze4>Z[
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file://partition wK_}`6R/
l=i-1; CHz(wn
r=j; *Pl[a1=o
do{ ?r+tU
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9HE)!Col
SortUtil.swap(data,l,r); SYL$?kl
} UnPSJ]VW
while(l SortUtil.swap(data,l,r); "J9+~)e^!
SortUtil.swap(data,l,j); SXL6)pX
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if((l-i)>THRESHOLD){ 'K1w.hC<
stack[++top]=i; =aCv
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stack[++top]=l-1; aE"t['
} Wac8x%J
if((j-l)>THRESHOLD){ -=RXhE_{
stack[++top]=l+1; 2g$Wv :E3
stack[++top]=j; + |,CIl+
} j405G4BVW
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} b6lL8KOu
file://new InsertSort().sort(data); sDiYm}W
insertSort(data); .UcS4JU
} y+PukHY
/** pd6d(
* @param data ,-b9:]{L
*/ "`S61m_
private void insertSort(int[] data) { bk<3oI
int temp; /vhh2`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ax<0grK
} 2'_sGAH
} Rq*m x<HDX
} qfu;X-$4
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} 'e*C^(6
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归并排序: tx@Q/ou`\P
pmS=$z;I
package org.rut.util.algorithm.support; n'gfB]H[
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import org.rut.util.algorithm.SortUtil; fq(e~Aqw$
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/** /~yqZD<O
* @author treeroot &jJgAZ!
* @since 2006-2-2 q\,H9/.0k
* @version 1.0 T:ck/:ZH
*/ 5HU>o|.
public class MergeSort implements SortUtil.Sort{ 2{&" 3dq
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/* (non-Javadoc) >3bpa<M_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A!J5Wz>Q5
*/ WC4Il
C
public void sort(int[] data) { FKQnz/
int[] temp=new int[data.length]; u4"+u"{d
mergeSort(data,temp,0,data.length-1); W+#?3s[FV
} @MM|.#
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private void mergeSort(int[] data,int[] temp,int l,int r){ %%_90t
int mid=(l+r)/2; [bp"U*!9P
if(l==r) return ; , QQ:o'I!
mergeSort(data,temp,l,mid); *<hpq)
mergeSort(data,temp,mid+1,r); \!PC:+uJ
for(int i=l;i<=r;i++){ wqyAEVea'8
temp=data; ~t}:vGD j
} ~ce.&C7cR
int i1=l; p|((r?{
int i2=mid+1; YmwVa
s
for(int cur=l;cur<=r;cur++){ vfj Ipg%i
if(i1==mid+1) p+t8*lkq
data[cur]=temp[i2++]; {T IGPK
else if(i2>r) ]-6 G'i?
data[cur]=temp[i1++]; Li'T{0)1)
else if(temp[i1] data[cur]=temp[i1++]; f 6q@
else \u*,~J)z
data[cur]=temp[i2++]; !y),| #7P
} %:y-"m1\u$
} YMWy5 \
h {m]n!
} pM=vW{"I/
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改进后的归并排序: @iaN@`5I6s
N>~*Jp2;
package org.rut.util.algorithm.support; fSTEZH
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import org.rut.util.algorithm.SortUtil; KDhHp^IXQ
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/** l}wBthwCc
* @author treeroot e7;]+pN]J
* @since 2006-2-2 sJD"u4#y
* @version 1.0 giTlXz3D9
*/ ABSeX
public class ImprovedMergeSort implements SortUtil.Sort { &M2x`
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private static final int THRESHOLD = 10; saZ;ixV
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/* ?G{fF
H
* (non-Javadoc) b,'./{c0
* Dn@ n:m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F-X>|oK>z
*/ OS,$}I[`8
public void sort(int[] data) { H!A^ MI
int[] temp=new int[data.length]; V>%%2"&C
mergeSort(data,temp,0,data.length-1); "Vh(%N`6
} LU]~d<i99
qg|+BIiUz
private void mergeSort(int[] data, int[] temp, int l, int r) { vi2xonq^
int i, j, k; =SdWU}xn2
int mid = (l + r) / 2; XyI w5
9
if (l == r) i^>
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return; *qqFIp^
if ((mid - l) >= THRESHOLD) NubD2
mergeSort(data, temp, l, mid); :DD4BY
else [L275]4n!]
insertSort(data, l, mid - l + 1); $p0s
if ((r - mid) > THRESHOLD) NUU}8a(K
mergeSort(data, temp, mid + 1, r); MhsG9q_%
else 3aOFpCs|#
insertSort(data, mid + 1, r - mid); oM VJ+#[x
=FKB)#N
for (i = l; i <= mid; i++) { -(2-zznZ
temp = data; AE$)RhY`
} upJishy&I
for (j = 1; j <= r - mid; j++) {
[
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temp[r - j + 1] = data[j + mid]; P-mrH
} i||YD-hkK
int a = temp[l]; {Xp.}c
int b = temp[r]; ?-VN+
d7
for (i = l, j = r, k = l; k <= r; k++) { &a:aW;^A7
if (a < b) { N+tS:$V
data[k] = temp[i++]; {/Cd ^CK
a = temp;
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} else { g %Am[fb
data[k] = temp[j--]; M}vPWWcl
b = temp[j]; 4 A<c@g2
} CuGk?i
} zknD(%a
} ?BRL;( x
u>eu47"n!
/** +!<`$+W
* @param data W)_B(;$]
* @param l k9,"`dk@
* @param i Y}6)jzBV
*/ UvI!e4_
private void insertSort(int[] data, int start, int len) { pI!55w|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^>"?!lv
} :b=0_<G
} bc ZonS
} IIPf5
Z}A
} Ob+&!XTp?0
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堆排序: -"<f(
V1fPH;
package org.rut.util.algorithm.support; B8&@Qc@~
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import org.rut.util.algorithm.SortUtil; ~!;3W!@(E
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/** mvw:E_
* @author treeroot joG>=o
* @since 2006-2-2 NplSkv
* @version 1.0 &-zI7@!
*/ U}7[8&k1
public class HeapSort implements SortUtil.Sort{
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t0q@]
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/* (non-Javadoc) 7^L&YVW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S]N4o'K}q
*/ "f3>20}
public void sort(int[] data) { H1]\B:
MaxHeap h=new MaxHeap(); $Yka\tS'
h.init(data); 87Kx7CKF"
for(int i=0;i h.remove(); m"DMa
System.arraycopy(h.queue,1,data,0,data.length); wnX6XyUH
} _e'mG'P(
^#o.WL%4/B
private static class MaxHeap{ 9Dl \S F[
e=_hfOUC
void init(int[] data){ %9lxE[/
this.queue=new int[data.length+1]; l0_V-|x
for(int i=0;i queue[++size]=data; SS`C0&I@p
fixUp(size); nAzr!$qbNv
} by<2hLB9Q
} (tgaH,G
hqBRh+[
private int size=0; 8n)Q^z+
K
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private int[] queue; 4Y!v$r
,&-[$,
public int get() { UQFuEI<1-
return queue[1]; >W<5$ .G
} J0 P
PG!vn@b6
public void remove() { _X[c19q
SortUtil.swap(queue,1,size--); J\V(MN,
fixDown(1); #5D+XB T
} H[r0jREK
file://fixdown lg1D>=(mY
private void fixDown(int k) { f"Iyo:Wt
int j; 2?j1~ ]DvZ
while ((j = k << 1) <= size) { H/$q]i*#K
if (j < size %26amp;%26amp; queue[j] j++; *"ShE=\p
if (queue[k]>queue[j]) file://不用交换 0u_'(Z-^2
break; gUp0RPs
SortUtil.swap(queue,j,k); `Nn?G
k = j; 'UxA8i(
} 0"`skYJ@
} 7L*`nU|h
private void fixUp(int k) { 3fPv71NVtt
while (k > 1) { A=K1T]o
int j = k >> 1; wLbngO=VG
if (queue[j]>queue[k]) =Ug_1w
break; .p`'^$X^
SortUtil.swap(queue,j,k); q4{ t H
k = j; Fn,|J[sC
} GLyh1qNX
} ]_?y[@ZP
m!_ghD{5h
} W=?87PkJu
keOW{:^i
} ;Y\,2b, xh
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SortUtil: mxGN[%ve
V*}zwms6
package org.rut.util.algorithm; m##=iB|;
9:o3JGHSc
import org.rut.util.algorithm.support.BubbleSort; B*IDx`^Y
import org.rut.util.algorithm.support.HeapSort; H[
q{R
import org.rut.util.algorithm.support.ImprovedMergeSort; ;^]A@WN6_
import org.rut.util.algorithm.support.ImprovedQuickSort; =HHg:"
import org.rut.util.algorithm.support.InsertSort; _=5ZB_I
import org.rut.util.algorithm.support.MergeSort;
v%5(-
import org.rut.util.algorithm.support.QuickSort; (#]KjpIK
import org.rut.util.algorithm.support.SelectionSort; @{uc
import org.rut.util.algorithm.support.ShellSort; #EUgb7
{9
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/** G.8b\E~
* @author treeroot qS
al~
* @since 2006-2-2 )v~]lk,o
* @version 1.0 -e>)yM `i
*/ Z"Oa5V6[A
public class SortUtil { ?W_U{=anl
public final static int INSERT = 1; @g~sgE}#
public final static int BUBBLE = 2; aehMLl9cl
public final static int SELECTION = 3; `'WLGQG
public final static int SHELL = 4; #9OP.4
public final static int QUICK = 5; gN~y6c:N
public final static int IMPROVED_QUICK = 6; H%]ch6C
public final static int MERGE = 7; n~j[Pw
public final static int IMPROVED_MERGE = 8; Sj?sw]3
public final static int HEAP = 9; R:?vY!
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public static void sort(int[] data) { |m- `,
we
sort(data, IMPROVED_QUICK); 1#"Q' ,7
} 4a!7|}W
private static String[] name={ (+dRD]|T
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vq1&8=
}; ,np`:fBMy
;0}2@Q2@ZK
private static Sort[] impl=new Sort[]{ mC92J@m/L!
new InsertSort(), -QDgr`%5
new BubbleSort(), 6/ipdi[
_
new SelectionSort(), \DK*>
k
new ShellSort(), &,]+>
new QuickSort(), @~3c"q;i7
new ImprovedQuickSort(), dRm'$
G9
new MergeSort(), j*d~h$[k
new ImprovedMergeSort(), ^~ $&
new HeapSort() "|`9{/]
}; X>7]g670@
\*aLyyy3
public static String toString(int algorithm){ <|3v@
return name[algorithm-1]; /g'-*:a
} XWpnZFjE
^1=|(Z/
public static void sort(int[] data, int algorithm) { +Q31K7G r
impl[algorithm-1].sort(data); vfJk?
(
} s$x] fO
X@U1Ri
public static interface Sort { CL :M>(
public void sort(int[] data); Ag0_^
} 8p{
Gcz@ze
public static void swap(int[] data, int i, int j) { z/k~+-6O
int temp = data; &\|<3sd(
data = data[j]; ok%!o+nk.
data[j] = temp; ;<@6f @
} rq["O/2
} lFGxW 5