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。 Mvb':/M
插入排序: :l,OalO
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package org.rut.util.algorithm.support; #.ct5
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import org.rut.util.algorithm.SortUtil; LjaGyj>)
/** y+U83a[L*
* @author treeroot J8<J8x4
* @since 2006-2-2 _D,eyP9P
* @version 1.0 5mgHlsDzu
*/ y-B=W]E
public class InsertSort implements SortUtil.Sort{ +=eR%|!@
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/* (non-Javadoc) +Ok%e.\ZM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2z_2.0/3
*/ 5~+XZA#2
public void sort(int[] data) { NTmi 2c
int temp; WUEHB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dMvp&M\\'
} #BY`h~&T
} #@qN8J}R
} 6/tI8H3E
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} xAhxD|4_
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冒泡排序: @dgH50o[
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package org.rut.util.algorithm.support; p[v#EyoC
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import org.rut.util.algorithm.SortUtil; U)D[]BVg
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/** ~R]35Cp-#
* @author treeroot "A3dvr
* @since 2006-2-2 :%X Ls,
* @version 1.0 }Qr6l/2
*/ UE :HMn6
public class BubbleSort implements SortUtil.Sort{ XOy2lJ/
}Ln@R~[
/* (non-Javadoc) ~/-eyxLTm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3[IJhR[
*/ 9}P"^N
public void sort(int[] data) { ^6;V}2>v}
int temp; 3l4NC03I&
for(int i=0;i for(int j=data.length-1;j>i;j--){ @T:faJ5\'
if(data[j] SortUtil.swap(data,j,j-1); k< j"~S1
} M \D]ml~
} d]wD[]
} 86qI
} PmX2[7
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} h<6UC%'ac
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选择排序: TgfrI
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package org.rut.util.algorithm.support; $uh z
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import org.rut.util.algorithm.SortUtil; r"{<%e
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/** /rc%O*R
* @author treeroot 1(#;&:$`i
* @since 2006-2-2 Sq2P-y!w
* @version 1.0 NHQF^2 \\
*/ M+P$/Wk
public class SelectionSort implements SortUtil.Sort { ^%>kO,
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/* =L-I-e97@
* (non-Javadoc) F<&!b2)ML
* LnsD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;xYNX
*/
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public void sort(int[] data) { ?]O7Ao
int temp; kv{}C)kt3
for (int i = 0; i < data.length; i++) { ?>
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int lowIndex = i; g);^NAA
for (int j = data.length - 1; j > i; j--) { hJ;$A*Y
if (data[j] < data[lowIndex]) { B 0ee?VC
lowIndex = j; 'gMfN
} ]wVk+%e
} YT#3n
SortUtil.swap(data,i,lowIndex); aA'TD:&p1
} s5&@Cxzl
} `~BZ1)@
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} ~x:DXEV,
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Shell排序: m#!=3P7T
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package org.rut.util.algorithm.support; |N /G'>TS
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import org.rut.util.algorithm.SortUtil; N)2f7j4C&
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/** *fMpZ+;[m
* @author treeroot IM@tN L
* @since 2006-2-2 ?~e3&ux
* @version 1.0 cre;P5^E
*/ J3RB]O_
public class ShellSort implements SortUtil.Sort{ <O<LYN+(
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/* (non-Javadoc) 4u;9J*r4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) */qtzt
*/ YIRZ+H<Q
public void sort(int[] data) { (N-RIk73/O
for(int i=data.length/2;i>2;i/=2){ =uHnRY
for(int j=0;j insertSort(data,j,i); !^oV #
} kOwMs<1J
} g=L]S-e
insertSort(data,0,1); 1c4/}3*
} DOS0;^f
dUrElXbXd
/** ||7x;2e
* @param data LW6ZAETyL
* @param j VosZJv=
* @param i f|7\DeY9U
*/ #N(= 3Cj
private void insertSort(int[] data, int start, int inc) { 4*n#yVb/
int temp; +n0r0:z0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c_grPk2O4
} 796\jf$
} %]gTm7
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} 0oZsb\
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} Jzji&A~
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快速排序: *D}0[|O
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package org.rut.util.algorithm.support; <*ZJaBwWU~
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import org.rut.util.algorithm.SortUtil; S^@S%Eg
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/** a]17qMl
* @author treeroot 7w:ef0S
* @since 2006-2-2 .~A*=
* @version 1.0 $,=6[T!z+e
*/ SvM6iZ]
public class QuickSort implements SortUtil.Sort{ !%+2Yifna
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/* (non-Javadoc) "xI"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aimarU
*/ 6k{2 +P
public void sort(int[] data) { ,_aM`%q?Fj
quickSort(data,0,data.length-1); <P[T!gST
} N[]Hc
private void quickSort(int[] data,int i,int j){ 1d"Z>k:mn
int pivotIndex=(i+j)/2; XgN` 7!Z
file://swap zLs|tJOVp
SortUtil.swap(data,pivotIndex,j); @+vXMJ $
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int k=partition(data,i-1,j,data[j]); ;h6v@)#GX
SortUtil.swap(data,k,j); {^mNJ
if((k-i)>1) quickSort(data,i,k-1); k(>h^
if((j-k)>1) quickSort(data,k+1,j); {e[%;W%c&
&X@Bs-
} sIG7S"k>p
/** Y?CCD4"qn
* @param data uzmk6G
v
* @param i ]w T 7*( Y
* @param j S:4crI
* @return `e9$,h|4
*/ Q?ahr~qo
private int partition(int[] data, int l, int r,int pivot) { M#"524Nz
do{ 4a0:2 kIKa
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [${
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SortUtil.swap(data,l,r); !-2R;yo12
} 'j^xbikr
while(l SortUtil.swap(data,l,r); d2oh/j6`TA
return l; WARb"8Kg
} }I|u'#n_
3&u_A?;
} _{t9 x\=
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改进后的快速排序: E J$36
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package org.rut.util.algorithm.support; >_rha~
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import org.rut.util.algorithm.SortUtil; 8h3=b[
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/** [Vd[-
* @author treeroot *D o/+[Ae
* @since 2006-2-2 ;Op3?_
* @version 1.0 +4[^!q*
H
*/ Vd".u'r
public class ImprovedQuickSort implements SortUtil.Sort { b KTcZG
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private static int MAX_STACK_SIZE=4096; E$W{8?:{
private static int THRESHOLD=10; w%WF-:u7|
/* (non-Javadoc) }X x(^Zh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A(?\>X
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*/ #-pc}Y|<
public void sort(int[] data) { 7g
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int[] stack=new int[MAX_STACK_SIZE]; hjaT^(Y
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int top=-1; 1h6^>()^
int pivot; >fH=DOz$&
int pivotIndex,l,r; D:k3"
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stack[++top]=0; j1_@qns{
stack[++top]=data.length-1; |mdi]TL
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while(top>0){ kb[P\cRa
int j=stack[top--]; iA8U Yd3Q
int i=stack[top--]; 0sI1GhVR
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pivotIndex=(i+j)/2; M?= ;JJ:
pivot=data[pivotIndex]; [V4 {c@
*),8PoT
SortUtil.swap(data,pivotIndex,j); }2K $^uR
kYzC#.|1
file://partition SyAvKd`g
l=i-1; &1+X\c+tb
r=j;
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do{ qwIa?!8o
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4iW'kuK
SortUtil.swap(data,l,r); D:Q
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} *Z m^
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while(l SortUtil.swap(data,l,r); )tCX
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SortUtil.swap(data,l,j); -n'F v@U
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if((l-i)>THRESHOLD){ aM7uBx\8 5
stack[++top]=i; .{;Y'Zc14S
stack[++top]=l-1; RI68%ZoL
} sXd8rj:o
if((j-l)>THRESHOLD){ gN)c
stack[++top]=l+1; ;raN
stack[++top]=j; B||;'
} -P&6L\V
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} 9f\/\L
file://new InsertSort().sort(data); W8lx~:v
insertSort(data); 7'
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} =)hVn
/** 3!5Ur&
* @param data O?<&+(uMTT
*/ _EF&A-kX|u
private void insertSort(int[] data) { WK="J6K5
int temp; w.&1%X(k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ',GS#~
} 4t)%<4
} %pXAeeSY`;
} }(egMx;"3J
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} ljKrj
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归并排序: $lhC{&tBV
7LO%#No",
package org.rut.util.algorithm.support; C/(M"j M
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import org.rut.util.algorithm.SortUtil; c1%H4j4/
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/** _ Ro!"YVX
* @author treeroot l2;CQ7
* @since 2006-2-2 E~LTb)
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* @version 1.0 SZJ$w-<z
*/ z<.?x%4O
public class MergeSort implements SortUtil.Sort{ Mwgu93?
f]7M'sy |
/* (non-Javadoc) \,J/ r!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Sz?S_N/j
*/ F @Te@n
public void sort(int[] data) { iD= p\
int[] temp=new int[data.length]; E*?<KZe"
mergeSort(data,temp,0,data.length-1); \6;=$f/?t
} 4mn&4e
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private void mergeSort(int[] data,int[] temp,int l,int r){ 6\61~u ~
int mid=(l+r)/2; I|# 5NE6
if(l==r) return ; _gD
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mergeSort(data,temp,l,mid); M)sZSH.<O
mergeSort(data,temp,mid+1,r); N?X^O#[
for(int i=l;i<=r;i++){ MLFKH
temp=data; 0(_l|PScF
} >a3p >2
int i1=l; V5 U?F6
int i2=mid+1; >J u]2++lx
for(int cur=l;cur<=r;cur++){ :_Eqf8T
if(i1==mid+1) Jk0r&t7
data[cur]=temp[i2++]; pIbdN/z
else if(i2>r) wO2_DyMm@
data[cur]=temp[i1++]; nYbhy}y
else if(temp[i1] data[cur]=temp[i1++]; $ "Bh]-
else pHoEa7:
data[cur]=temp[i2++]; 4nAa`(62
} R0oKbs{
} :{(w3<i
$<ld3[l i
} f<A5?eKw
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改进后的归并排序: ]tY
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&CwFdx:Ff
package org.rut.util.algorithm.support; r=c<--_@
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import org.rut.util.algorithm.SortUtil; #M A4
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/** s|y:UgD
* @author treeroot 85;b9k&\M
* @since 2006-2-2 GJqE!I,.
* @version 1.0 *6(kbe s
*/ TNJG#8 n%Y
public class ImprovedMergeSort implements SortUtil.Sort { MQKfJru7
|pa$*/!NT
private static final int THRESHOLD = 10; uytE^
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/* GElvz'S~
* (non-Javadoc) UU8pz{/
* HK+/:'Pu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I7^zU3]Ul
*/ pu,?<@0YK
public void sort(int[] data) { zS]8V?`
int[] temp=new int[data.length]; 7)%+=@
mergeSort(data,temp,0,data.length-1); 67y Tvr@a
} h_d<!
hQNe;R5
private void mergeSort(int[] data, int[] temp, int l, int r) { ;l}- Z@! /
int i, j, k; 1n\ t+F
int mid = (l + r) / 2; ;O<9|?
if (l == r) pStk/te,XK
return; ]\ngX;h8G
if ((mid - l) >= THRESHOLD) (LHp%LaZ\;
mergeSort(data, temp, l, mid); e$Y[Z{T5
else GA`PY-Vs)
insertSort(data, l, mid - l + 1); W[+|}
if ((r - mid) > THRESHOLD) V(Yxh+KU
mergeSort(data, temp, mid + 1, r); %7g:}O$
else 1wW)tNKIF
insertSort(data, mid + 1, r - mid); /k"`7`!
&QNWL]
for (i = l; i <= mid; i++) { l1]p'Liuu
temp = data; s}onsC
} `<[6YH_
for (j = 1; j <= r - mid; j++) { z6py"J@
temp[r - j + 1] = data[j + mid]; /.M+fr S
} gT/@dVV
int a = temp[l]; q$G,KRy/
int b = temp[r]; E\m5%bK\B
for (i = l, j = r, k = l; k <= r; k++) { c]B$i*t
if (a < b) { -YD+(c`l
data[k] = temp[i++]; lO:.OZu
a = temp; jp' K%P
} else { 2DD:~Tbi
data[k] = temp[j--]; 7 h y&-<
b = temp[j];
rxO2QQ%V
} fSDi-I
} ~:km]?lz0
} SE7W F18A
76.{0c
/** +h_ !0dG
* @param data U:F/iXz
* @param l 4.RG4Jq
* @param i ~XeFOMq
*/ *Ei|fe$sa
private void insertSort(int[] data, int start, int len) { PA w-6;
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _7DkS}NJs
} CQ;]J=|<_
} A8A~!2V
} oUQ07z\C
} @Mvd'.r<;
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堆排序: A[WV'!A,
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package org.rut.util.algorithm.support; Z>)][pL
1y^K/.5-
import org.rut.util.algorithm.SortUtil; #y|V|nd
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/** {K#NB_*To
* @author treeroot ~el3I=KC}
* @since 2006-2-2 P'MY[&|mM'
* @version 1.0 Jw~( G9G
*/ ``ekR6[ 8c
public class HeapSort implements SortUtil.Sort{ ;O 0+,
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/* (non-Javadoc) vILy>QS)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x_|F|9
*/ ":3 VJ(eY
public void sort(int[] data) { N)% ;jh:T
MaxHeap h=new MaxHeap(); yk2 !8
h.init(data); 97!>%d[0
for(int i=0;i h.remove(); z'p:gv]
System.arraycopy(h.queue,1,data,0,data.length); p1c3Q$>i
} >MJ?g-
I|$
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private static class MaxHeap{ }B7K@Wu#
G1 o70
void init(int[] data){ ^7]"kg DA
this.queue=new int[data.length+1]; *=Z26
for(int i=0;i queue[++size]=data;
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fixUp(size); hl&-\ dc+
} g/=K.
} }Vu\(~
6I_Hd>4
private int size=0; N?dvuB
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private int[] queue; bU 63X={
,D6v4<jh
public int get() { m\/(w_/?
return queue[1]; R6 XuA(5
} }G$]LWgQx
yz+, gLY
public void remove() { t)oa pIeIe
SortUtil.swap(queue,1,size--); "x'),
fixDown(1); B@Nt`ky0*
} h?\2_s
file://fixdown b=a!j=-D
private void fixDown(int k) { ea=83 Zj
int j; 'cDx{?
while ((j = k << 1) <= size) { cD1o"bq
if (j < size %26amp;%26amp; queue[j] j++; !e#xx]v3
if (queue[k]>queue[j]) file://不用交换 ihT~xt
break; URcR
SortUtil.swap(queue,j,k); Uh.Zi3X6}6
k = j; !k$}Kj)I
} H]<]^Zmjy
} (UNtRz'=;
private void fixUp(int k) { B6Ej{q^k,
while (k > 1) { ~fz[x 9\
int j = k >> 1; $N$ FtpB
if (queue[j]>queue[k]) vAP{;Q0i
break; j*T]HaM
SortUtil.swap(queue,j,k); (\puf+
k = j; [-*F"}D,
} 5=?i;P
} "fQRk
P4
ul[zZ
} ,gnQa
LE?u`i,e=+
} O}Ui`eWU
[_y@M
]
SortUtil: ]6tkEyuq
tqOi
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package org.rut.util.algorithm; Ccfwax+
c(-Mc6
import org.rut.util.algorithm.support.BubbleSort; xSpC'"
import org.rut.util.algorithm.support.HeapSort; k7_I$<YDj
import org.rut.util.algorithm.support.ImprovedMergeSort; Z#`0txCF
import org.rut.util.algorithm.support.ImprovedQuickSort; SP
2 8
import org.rut.util.algorithm.support.InsertSort; -7'#2P<)
import org.rut.util.algorithm.support.MergeSort; 9CUimZ
import org.rut.util.algorithm.support.QuickSort; #:3r4J%+~
import org.rut.util.algorithm.support.SelectionSort; %IpSK 0<Sp
import org.rut.util.algorithm.support.ShellSort; KGZ?b2N?Va
_J?SIm
/** zW{ 6Eg
* @author treeroot ;'RFo?u K
* @since 2006-2-2 }F`beoMAkM
* @version 1.0 VmQh$&h
*/ @kngI7=E
public class SortUtil { 1TqF6`;+
public final static int INSERT = 1; P`s(kIe
public final static int BUBBLE = 2; Ri:p8
public final static int SELECTION = 3; DOD6Liau{Q
public final static int SHELL = 4; =.m6FRsU
public final static int QUICK = 5; X<Za9
public final static int IMPROVED_QUICK = 6; b5ie <s
public final static int MERGE = 7; UPCQs",
public final static int IMPROVED_MERGE = 8; coQ[@vu
public final static int HEAP = 9; [ET6(_=b
DM7}&~
public static void sort(int[] data) { 1JTbCS
sort(data, IMPROVED_QUICK); 9+CFRYC
} zjbE 7^N
private static String[] name={ PNF4>)
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
AvRcS]@=
}; Pw}_[[>$
[J\DB)V/
private static Sort[] impl=new Sort[]{ +h[e0J|v{
new InsertSort(), p?rK`$U+J
new BubbleSort(), ;?6>mh(`
new SelectionSort(), L@|#Bbmx
new ShellSort(), y{rn-?`{
new QuickSort(), C@dGWAG
new ImprovedQuickSort(), F%6*Df;cSe
new MergeSort(), #0MK(Ut/
new ImprovedMergeSort(), qR,.W/eS8
new HeapSort() *M!kA65'
}; `ENP=kL(+
./maY1>T
public static String toString(int algorithm){ UC9{m252
return name[algorithm-1]; (:?&G9k
"
} 'tWAu I
SfI*bJo>V
public static void sort(int[] data, int algorithm) { 9G:TW|)L[Q
impl[algorithm-1].sort(data); 'XfgBJF=
} Md9l+[@
Fn,k!q
public static interface Sort { vnsSy 33K
public void sort(int[] data); (DJvi6\H
} cb+y9wA
QaMDGD
public static void swap(int[] data, int i, int j) { z}5<$K_U
int temp = data; )bW5yG!
data = data[j]; fcAIg(vW
data[j] = temp; ]t/f<jKN^
} G*\sdBW!k
} _'JRo%{xGX