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。 fKFD>u0%
插入排序: 5wh(Qdib
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; e 2NF.
/** /6[vF)&
* @author treeroot ]AM*9!
* @since 2006-2-2 ws,?ImA
* @version 1.0 i( +Uv tgs
*/ 5uSg]2:
public class InsertSort implements SortUtil.Sort{ Gs|a$^V|o
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/* (non-Javadoc) ]e5aHpgR=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~H?v L c;>
*/ #P z'-lo
public void sort(int[] data) { CE
int temp; muF&t'k
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ow
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} -L2 +4
} @ YWuWF
} 2Hx*kh2
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} s"nntC
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冒泡排序: _C1u}1hW#
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package org.rut.util.algorithm.support; Q2]7|C
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import org.rut.util.algorithm.SortUtil; [:e>FXV
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/** Yz0HBEA
* @author treeroot -:L7iOzgD
* @since 2006-2-2 PIFZ '6gn
* @version 1.0 R6>*n!*D@
*/ &1=,?s]&
public class BubbleSort implements SortUtil.Sort{ v6aMYmenBH
X=6L-^o)
/* (non-Javadoc) hHcevSr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~e,K
*/ `Has3AX8
public void sort(int[] data) { 1
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int temp; HlkjyD8
for(int i=0;i for(int j=data.length-1;j>i;j--){ &.z-itiV
if(data[j] SortUtil.swap(data,j,j-1); *"F*6+}w"
} h<?I?ZR0$
} "FGgem%9
} _h=h43'3
} s:,fXg25J
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} XM?c*,=fu
i
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选择排序: Cx(HsJ!,
JPT&!%~
package org.rut.util.algorithm.support; U'5p;j)_
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import org.rut.util.algorithm.SortUtil; w8>bct3@
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/** Of-gG~
* @author treeroot ci(BPnQ
* @since 2006-2-2 -ECnX/ "
* @version 1.0 98<^!mwF
*/ c[OQo~m$
public class SelectionSort implements SortUtil.Sort { M5`m5qc3
/n,a0U/
/* 6w{""K.{
* (non-Javadoc) 3+U2oI:I
* X88I|Z'HIh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r[j@@[)"
*/ Cd p_niF
public void sort(int[] data) { Z$YG'p{S
int temp; <bv9X?U
for (int i = 0; i < data.length; i++) { p<@+0Uw2
int lowIndex = i; GBd
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for (int j = data.length - 1; j > i; j--) { &w%%^ +n
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if (data[j] < data[lowIndex]) { MD> E0p)
lowIndex = j; ke +\Z>BWN
} K~5(j{Kb8
} ,0>_(5
SortUtil.swap(data,i,lowIndex); X)[QEq^
} ;%u)~3B$JK
} W"xRf0\V
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} D{[i_K
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Shell排序: ;]/cCi
JvW!w)$pY
package org.rut.util.algorithm.support; ,Qe`(vU*s
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import org.rut.util.algorithm.SortUtil; 63i&e/pv
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/**
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* @author treeroot E@="n<uS
* @since 2006-2-2 FEA/}*2F
* @version 1.0 <@@@Pl!~
*/ +w@/$datI
public class ShellSort implements SortUtil.Sort{ .M\0+,%/
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/* (non-Javadoc) =&U7:u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VN@ZYSs
*/ 5hiuBf<
public void sort(int[] data) { &gm/@_
for(int i=data.length/2;i>2;i/=2){ 3_ =:^Z
for(int j=0;j insertSort(data,j,i); +n 8,=}
} O}Do4>02
} KR4 RIJZ_t
insertSort(data,0,1); yLt?XhRlp
} ]b&qC
(
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/** cXOb=
* @param data )jRaQ~Sm
* @param j q]*:RI?wGT
* @param i f6HDfJmE
*/ sE(mK<{pk
private void insertSort(int[] data, int start, int inc) { pC)S9Kl
int temp; YH!` uU(Lh
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b@[5xv\J
} ~x+24/qT
} TUO#6
} >Gxu8,_;
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} pM@0>DVi
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快速排序: Bk1gE((
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package org.rut.util.algorithm.support; HmEU;UbO-
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import org.rut.util.algorithm.SortUtil; zhde1JE
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/** &nF7CCF
* @author treeroot C
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* @since 2006-2-2 d4-cZw}+
* @version 1.0 .aR$ou,7
*/ <H!;/p/S
public class QuickSort implements SortUtil.Sort{ B3Esfk
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/* (non-Javadoc) RD p(Ci
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hLLg
*/ JSiLG0
public void sort(int[] data) { QGd"Z lQ
quickSort(data,0,data.length-1); '^M3g-C[Jg
} b*qC
private void quickSort(int[] data,int i,int j){ K<tkNWasQ
int pivotIndex=(i+j)/2; 8DNGqaH;dt
file://swap "PPn^{bYm
SortUtil.swap(data,pivotIndex,j); E)l@uPA'1
I#hzU8Cc
int k=partition(data,i-1,j,data[j]); ;tLu
SortUtil.swap(data,k,j); {mV,bg,}~
if((k-i)>1) quickSort(data,i,k-1); c7N`W}BZ
if((j-k)>1) quickSort(data,k+1,j); T\Q)"GB
7":0CU%%
} I"+;L4o `
/** c=HL
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* @param data f_Q_qckB%x
* @param i WAcQRa~C
* @param j MA:8gD
* @return Z$5@r2d)
*/ E>?T<!r~j
private int partition(int[] data, int l, int r,int pivot) { Tp/+{|~
do{ 3AD^B\<gB
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T|[o
SortUtil.swap(data,l,r); j^Z3
} H\<C@OkJS}
while(l SortUtil.swap(data,l,r); . RNQlh3
return l; 'rdg
} Nl1v*9_x
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} t1
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改进后的快速排序: KArnNmJ9
K]q OLtc
package org.rut.util.algorithm.support; }3!.e
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import org.rut.util.algorithm.SortUtil; p68)
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/** ?<slB>8
* @author treeroot e&u HU8k*
* @since 2006-2-2 Ip4SdbU
* @version 1.0 PF-
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*/ G}\E{VvWh
public class ImprovedQuickSort implements SortUtil.Sort { !g~xn2m$R
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private static int MAX_STACK_SIZE=4096; l>M&S^/s j
private static int THRESHOLD=10; @Tr8.4
/* (non-Javadoc) ZUMzWK5Th
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T{j&w% (z
*/ _>*$%R
public void sort(int[] data) { #sEbu^
int[] stack=new int[MAX_STACK_SIZE]; LE!3'^Zq
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int top=-1; @hWt.qO3s
int pivot; {j
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int pivotIndex,l,r; Y0U<l1(|
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stack[++top]=0; }45&s9m=
stack[++top]=data.length-1; Ydu=Jg5u7
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while(top>0){ J%_
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int j=stack[top--]; 'on, YEp
int i=stack[top--]; 6?ylSQ]1
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pivotIndex=(i+j)/2; *Oo2rk nQ
pivot=data[pivotIndex]; c X553&
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SortUtil.swap(data,pivotIndex,j); i3>7R'q>
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file://partition Zcv1%hI
l=i-1; )fR'1_
r=j; o% !a
do{ %Ow,.+m
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1NT@}j~/
SortUtil.swap(data,l,r); z/N~HSh!d
} <$HP"f+<S5
while(l SortUtil.swap(data,l,r); /'p(X~X:l
SortUtil.swap(data,l,j); 'LR5s[$j
}dE0WJcO
if((l-i)>THRESHOLD){ m^Btr
stack[++top]=i; UMw1&"0:
stack[++top]=l-1; ?
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} $}7/mS@c
if((j-l)>THRESHOLD){ -mG3#88*
stack[++top]=l+1; $q{-)=-BXQ
stack[++top]=j; rRL:]%POT
} qI"@ PI!s
+kQ$X{+;8
} Ah28D!Gor
file://new InsertSort().sort(data); ,`MUd0 n
insertSort(data); s&!g )
} zD-.bHo>.
/** O%y.
* @param data $ T.c>13
*/ V\WqA8
private void insertSort(int[] data) { *^Wx=#w$V
int temp; 2RidI&?c<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -}{c;pT
} =x9zy]
} e&E""ye
} +PY LKyS>
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} ](@Tbm8
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归并排序: *<zfe.
Sim\+SL{#
package org.rut.util.algorithm.support; zVYX#- nv
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import org.rut.util.algorithm.SortUtil; [L"(flY(E
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/** HkD6aJ:kA!
* @author treeroot Lt.a@\J'_
* @since 2006-2-2 jX!,xS%(
* @version 1.0 vz*QzVk1
*/ iXMs*GcK
public class MergeSort implements SortUtil.Sort{ o4,W!^n2
kf>oZ*/
/* (non-Javadoc) noC]&4b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E=3<F_3W
*/ YUat}-S
public void sort(int[] data) { |#Bz&T
int[] temp=new int[data.length]; G@ XKE17
mergeSort(data,temp,0,data.length-1); _K3?0<=4
} NSUw7hnWvz
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private void mergeSort(int[] data,int[] temp,int l,int r){ lphQZ{8
int mid=(l+r)/2; a1_7plg
if(l==r) return ; \IbGNV`q
mergeSort(data,temp,l,mid); g>A*kY
mergeSort(data,temp,mid+1,r); 3G
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for(int i=l;i<=r;i++){ V lXUrJ9&
temp=data; fa;\4#
} t{|
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int i1=l; x-,+skZs
int i2=mid+1; v{"$:Z
ow
for(int cur=l;cur<=r;cur++){ [84ss;.$
if(i1==mid+1) MJd!J]E6
data[cur]=temp[i2++]; Q}2aBU.f
else if(i2>r) J1T_wA_
data[cur]=temp[i1++]; oQ1>*[e<u
else if(temp[i1] data[cur]=temp[i1++]; [nB[]j<R*
else ^+^#KC8]W
data[cur]=temp[i2++]; anjU3j
} x4Mq{MrWp
} ,&rlt+wE
;"$Wfy
} a.#`>
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改进后的归并排序: Ds?
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package org.rut.util.algorithm.support; Pk !RgoWF
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import org.rut.util.algorithm.SortUtil; \3LP@;Phn
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/** I{U7BZy
* @author treeroot gE]6]L
* @since 2006-2-2 kHygif
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* @version 1.0 U}<5%"!;
*/ nj$TdwZbK
public class ImprovedMergeSort implements SortUtil.Sort { kAA1+rG
:*Lr(-N-
private static final int THRESHOLD = 10; 7)tkqfb]
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/* @&p:J0hbp
* (non-Javadoc) awkPFA*c'
* >M=_:52.+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PTrKnuM\J_
*/ E1 IT>_
public void sort(int[] data) { Ybo:2e
int[] temp=new int[data.length]; ce@1#}*
mergeSort(data,temp,0,data.length-1); }W^%5o87{
} >zFk}/
#d2XVpO[0
private void mergeSort(int[] data, int[] temp, int l, int r) { Hd]o?q\
int i, j, k; .\XFhOsa
int mid = (l + r) / 2; ^3"~
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if (l == r) /k8Lu+OJ
return; .}!"J`{W
if ((mid - l) >= THRESHOLD) Z"j #kaXA
mergeSort(data, temp, l, mid); p5`iq~e9
else LK\L}<;1V
insertSort(data, l, mid - l + 1); yuIy?K
if ((r - mid) > THRESHOLD) Cw6\'p%l-\
mergeSort(data, temp, mid + 1, r); ])F*)U
else *?bOH5$@Nw
insertSort(data, mid + 1, r - mid); >G7dw1;
E/[>#%@i
for (i = l; i <= mid; i++) { q@k/"ee*?
temp = data; }z%fQbw
} Q*4{2oQ
for (j = 1; j <= r - mid; j++) { )E9[=4+*C$
temp[r - j + 1] = data[j + mid]; UMtnb:ek
}
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int a = temp[l]; 8J|2b; Vf
int b = temp[r]; Nz/PAs7g6
for (i = l, j = r, k = l; k <= r; k++) { NULew]:5
if (a < b) { |i_+b@Lul
data[k] = temp[i++]; _y:-_q
a = temp; )Fk*'6
} else { 9o%k [n
data[k] = temp[j--]; e1cqzhI=nA
b = temp[j]; 8/W(jVO(-
} pmda9V4
} DO*rVs3'p[
} gOiZ8K!
ZHu"&&
/** >b\{y}[
* @param data `Iwl\x[A
* @param l xqm-m
* @param i /bdL.Y# V
*/ 0?V{u`*
private void insertSort(int[] data, int start, int len) { 0zQ~'x
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mIW8K
):
} 75v7w
} N+lhztYQ?
} eX`wQoV%
} }2xgm9j<
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堆排序: "w7{,HP
5Z;iK(>IX
package org.rut.util.algorithm.support; v']Tusmg
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import org.rut.util.algorithm.SortUtil; 1S[4@rZ
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/** p
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* @author treeroot :m]KVcF.
* @since 2006-2-2 ql/K$#u
* @version 1.0 )6U6~!k
*/ q@i>)nC R
public class HeapSort implements SortUtil.Sort{ ]S0=&x@,
M!i["($_
/* (non-Javadoc) M r-l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vh ?5
*/ SfSWjq
public void sort(int[] data) { #,[z}fq
MaxHeap h=new MaxHeap(); hTc
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h.init(data); g"{`g6(+
for(int i=0;i h.remove(); Kz~E"?
System.arraycopy(h.queue,1,data,0,data.length); C6"{-{H
} / jLb{Ky
]hMs:$}
private static class MaxHeap{ g3|k-
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void init(int[] data){ `}:pUf
this.queue=new int[data.length+1]; -,186ZVZ
for(int i=0;i queue[++size]=data; 4 :phq
fixUp(size); r\A|fiL
} ppuJC'GW
} Y sDai<
bblEZ%
private int size=0; t5CJG '!ql
.TeGA;
private int[] queue; 5X PoQ^
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public int get() { :]icW^%
return queue[1]; aH7@:=B
} "M;[c9
'2qbIYanh
public void remove() { [_`<<!u>-
SortUtil.swap(queue,1,size--); s
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fixDown(1); qXprD.; }
} qP[_!C.
file://fixdown I)\{?LdHR
private void fixDown(int k) { nP&6i5s%
int j; xsIfR3Ze9
while ((j = k << 1) <= size) { J``5;%TJp
if (j < size %26amp;%26amp; queue[j] j++; eN'b"_D
if (queue[k]>queue[j]) file://不用交换 6W<Ig;
break; a8YFH$Xh
SortUtil.swap(queue,j,k); !a4`SjOgu
k = j; ')T*cLQ><
} ]`q]\EH
} y*Gq VA[
private void fixUp(int k) { ^V~^[Yp
while (k > 1) { R5i xG9
int j = k >> 1; _'|C-j`u$
if (queue[j]>queue[k]) *V_b/Vt
break; ef@F!s_fI
SortUtil.swap(queue,j,k); SB|Cr:wM
k = j; Sc ijf 9
} >guX,hx^
} 8Ow#W5_3|
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} >E7s}bL"
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ib|
} >uo=0=9=
i# fvF)
SortUtil: HJ!!"
D;h JK-Y
package org.rut.util.algorithm; ?pdN!zOeL
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import org.rut.util.algorithm.support.BubbleSort; th{ie2$
import org.rut.util.algorithm.support.HeapSort; E9 w"?_A)
import org.rut.util.algorithm.support.ImprovedMergeSort; IrIW>r} -
import org.rut.util.algorithm.support.ImprovedQuickSort; l*Q OM
import org.rut.util.algorithm.support.InsertSort; |2GrOM&S
import org.rut.util.algorithm.support.MergeSort; ewdcAF5
import org.rut.util.algorithm.support.QuickSort; ^?:
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import org.rut.util.algorithm.support.SelectionSort; 2q
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import org.rut.util.algorithm.support.ShellSort; u/CR7Y
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/** 8.&P4u i
* @author treeroot /!_FE+
* @since 2006-2-2 &k`/jl;u
* @version 1.0 rM4Ri}bS
*/ cpPS8V
public class SortUtil { m2l0`l~T8
public final static int INSERT = 1; 9&HaEAme
public final static int BUBBLE = 2; E Uq6)
K
public final static int SELECTION = 3;
)afH:
public final static int SHELL = 4; u= Ga}
public final static int QUICK = 5; 1]W8A.ZS
public final static int IMPROVED_QUICK = 6; f7a"}.D$
public final static int MERGE = 7; [U$`nnp
public final static int IMPROVED_MERGE = 8; 3t5WwrNh
public final static int HEAP = 9; A9WOu*G1O
&?I3xzvK
public static void sort(int[] data) { BwYR"
sort(data, IMPROVED_QUICK); H?
%I((+
} bo??91B^7
private static String[] name={ "HLh3L~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5>:p'zI
}; Va4AE)[/*
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private static Sort[] impl=new Sort[]{ KfSbm?
new InsertSort(), qL$\[(
new BubbleSort(), !95Q4WH-@
new SelectionSort(), 3W[Ps?G
new ShellSort(), 8SBa w'a
new QuickSort(), )7m.n%B!5V
new ImprovedQuickSort(), KhPDXY]!
new MergeSort(), lrgvY>E0
new ImprovedMergeSort(), /GA-1cS_(
new HeapSort() 5r0Sl89J
}; !MOcF5M
PkOtg[Z
public static String toString(int algorithm){ ZC &~InN
return name[algorithm-1]; 9? |m ^
} .4!wp&
^fU,9
public static void sort(int[] data, int algorithm) { }]pO R&o
impl[algorithm-1].sort(data); 0a+U >S#
} C?rb}(m
']sIU;h3
public static interface Sort { ZV!*ZpTe~
public void sort(int[] data); 9x14I2
} Ut(BQM>U+$
b:&=W>r
public static void swap(int[] data, int i, int j) { >BjZ{7?Ok
int temp = data; hAB:;r XlI
data = data[j]; bR=TGL&
data[j] = temp; Z"G?+gM@
} ^.[+)0I
} oTeQY[%$