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[JAVA]用Java实现的各种排序

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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。 F7zBm53  
插入排序: &\, ZtaB  
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package org.rut.util.algorithm.support; wLf=a^c#  
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import org.rut.util.algorithm.SortUtil; f._FwD  
/** J `8bh~7  
* @author treeroot 7#BpGQJQ  
* @since 2006-2-2 lJloa'%v9  
* @version 1.0 _pv<_ Sm  
*/ GX+oA]  
public class InsertSort implements SortUtil.Sort{ HJ2r~KIw  
\)pT+QxZ  
/* (non-Javadoc) aa1^cw 5}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dog Tj  
*/ U0/X!@F-  
public void sort(int[] data) { od\Q<Jm}  
int temp; a0oM KGW:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eVZ/3o  
} 0b0.xz\~U  
} 4epE!`z_&  
} U[b $VZ}  
Ih]'OaE   
} C"I:^&sL  
}l/ !thzC  
冒泡排序: A3C#w J  
mRT`'fxK  
package org.rut.util.algorithm.support; IG1+_-H:  
_[8BAm  
import org.rut.util.algorithm.SortUtil; ugtb`d{ Sl  
P%v7(bqL4+  
/** $~<);dYu0  
* @author treeroot |.x |BJ  
* @since 2006-2-2 xe;1D'(   
* @version 1.0 Azun"F_f  
*/ h5-<2B|  
public class BubbleSort implements SortUtil.Sort{ p-H q\DP  
,nJYYM   
/* (non-Javadoc) g_\U-pzr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jj,Y:  
*/ ^@'LF T)  
public void sort(int[] data) { OQ>r;)/  
int temp; 7dXR/i\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ wD-(3ZVd4  
if(data[j] SortUtil.swap(data,j,j-1); Jb'M/iG  
} ~G!>2 +L  
} $\xS~ w  
} P%8zxU;  
} 7tgn"wK  
oe$Y=`  
} D&f(h][hH?  
'OKDB7Ni  
选择排序: 8'Eu6H&$G  
S.bB.<  
package org.rut.util.algorithm.support; $F!)S  
sEj?,1jk  
import org.rut.util.algorithm.SortUtil; J;pn5k~3  
`2S G{5o;  
/** =FkU: q$  
* @author treeroot 75j`3wzu  
* @since 2006-2-2 -MrEJ  
* @version 1.0 F2yc&mXyk  
*/ \vVGfG?6  
public class SelectionSort implements SortUtil.Sort { H@$\SUc{  
_@[M0t}g_  
/* v%(2l|M  
* (non-Javadoc) 3+gp_7L  
* {O-,JCq/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {umdW x.*  
*/ zfDx c3e  
public void sort(int[] data) { T!.6@g`x>  
int temp; L 0?-W%$>  
for (int i = 0; i < data.length; i++) { yDBS : \  
int lowIndex = i; 9ZjSM,+  
for (int j = data.length - 1; j > i; j--) { X kZ82w#b  
if (data[j] < data[lowIndex]) { kYwk'\s  
lowIndex = j; .80^c  
} ob=GB71j55  
} R9X* R3nB  
SortUtil.swap(data,i,lowIndex); Wpo:'?!(M^  
} qF m=(J%  
} SV;S`\i  
T&6W>VQ|[>  
} \; Io  
Sr1xG%;|/  
Shell排序: G<9UL*HU  
~GJJ{Bm_  
package org.rut.util.algorithm.support; ~W'>L++  
OHixOI$O  
import org.rut.util.algorithm.SortUtil;  PDaD:}9  
`z<k7ig  
/** p!<Y 'G  
* @author treeroot )En*5-1  
* @since 2006-2-2 E"7 iU  
* @version 1.0 s^Lg*t 3I  
*/ 6; g_}Zx  
public class ShellSort implements SortUtil.Sort{ f8um.Xnp6  
[!E pv<G  
/* (non-Javadoc) {e4`D1B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]9]cef=h#  
*/ t(FI Bf3  
public void sort(int[] data) { IHCEuK  
for(int i=data.length/2;i>2;i/=2){ ..RCR_DIp  
for(int j=0;j insertSort(data,j,i); Op^r}7  
} W|_^Oe<  
} ^mbpt`@  
insertSort(data,0,1); J{"<Hgb  
} ;C,D1_20Z  
z>$AZ>t%J$  
/** _JZS;8WYR  
* @param data HY[eo/nM1d  
* @param j Qzbelt@Wx  
* @param i Jybx'vZj  
*/ Y <;A989D  
private void insertSort(int[] data, int start, int inc) { $ftcYBZa  
int temp; ^i}*$ZC72  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); aKdi  
} vCE1R]^A.]  
} __jFSa`at  
} 5yO %|)  
qE73M5L&  
} %,Fx qw  
NWCJ|  
快速排序: z>HeM Mei  
6X{RcX]/  
package org.rut.util.algorithm.support; C]{:>= K  
rdd%"u+  
import org.rut.util.algorithm.SortUtil; /8 /2#`3R  
OEc$ro=m*  
/** I6}ine ps  
* @author treeroot m}Z=m8  
* @since 2006-2-2 'Dl31w%:  
* @version 1.0 871taL=  
*/ IN2FO/Y@  
public class QuickSort implements SortUtil.Sort{ kae &,'@JF  
4f+R}Ee7  
/* (non-Javadoc) &_cMbFLBP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ar@" K!TS  
*/ Ic_>[E?k  
public void sort(int[] data) { C^>txui8  
quickSort(data,0,data.length-1); "0al"?  
} P~Cx#`#(V  
private void quickSort(int[] data,int i,int j){ k`H#u,&  
int pivotIndex=(i+j)/2; 5e^t;  
file://swap #kD8U#  
SortUtil.swap(data,pivotIndex,j); Z/nTI 0N{  
fz H$`X'M  
int k=partition(data,i-1,j,data[j]); U#3Y3EdF<  
SortUtil.swap(data,k,j); <1~5l ~  
if((k-i)>1) quickSort(data,i,k-1); 8P8@i+[]W  
if((j-k)>1) quickSort(data,k+1,j); Nrp0z:  
"/v{B?~%!  
} 5c*kgj:x  
/** :]&O  
* @param data =bt/2 nPV  
* @param i a`XXz  
* @param j tz{W69k+  
* @return v[efM8  
*/ P{qi>FJqe  
private int partition(int[] data, int l, int r,int pivot) { ^_dYE]t  
do{ ":t'} Eg=6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1t"  
SortUtil.swap(data,l,r); ;{xk[f m=  
} vb 2mY  
while(l SortUtil.swap(data,l,r); I"/p^@IX  
return l; rVU::C+-  
} @I{v  
YcJZG|[  
} ESdjDg$[u  
L`v7|!X  
改进后的快速排序: [se J'Io  
.QRa{l_)  
package org.rut.util.algorithm.support; yQ5F'.m9e  
bDh,r!I  
import org.rut.util.algorithm.SortUtil; ".Lwq_  
PGTi-o}  
/** 3f;W+^NY  
* @author treeroot q'r(#,B<3  
* @since 2006-2-2 y#%*aV}|B  
* @version 1.0 [T8BQn!  
*/ 2)O-EAn  
public class ImprovedQuickSort implements SortUtil.Sort { #=~n>qn]  
 j6zZ! k  
private static int MAX_STACK_SIZE=4096; U&DD+4+28:  
private static int THRESHOLD=10; Ko6>h  
/* (non-Javadoc) ";:"p6?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) //9M~qHa"  
*/ N_AAhD  
public void sort(int[] data) { 0Q\6GCzN\  
int[] stack=new int[MAX_STACK_SIZE]; l/|bU9o /u  
O3Jp:.ps  
int top=-1; K5; /  
int pivot; *AEN  
int pivotIndex,l,r; xWNB/{F  
s*A#;  
stack[++top]=0; Bismd21F6=  
stack[++top]=data.length-1; <B,z)c  
-)S(eqq1  
while(top>0){ `tmd'  
int j=stack[top--]; E038p]M!  
int i=stack[top--]; &YAw~1A  
+4<Ij/}p  
pivotIndex=(i+j)/2; v;!f  
pivot=data[pivotIndex]; ZM:!LkK  
zq(R!a6  
SortUtil.swap(data,pivotIndex,j); #=>t6B4af  
\\\%pBT7]\  
file://partition @qC](5|TQ  
l=i-1; AOvn<Q  
r=j; Tnw0S8M  
do{ 5u(B]_r.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MiB"CcU  
SortUtil.swap(data,l,r); C_c*21X  
} 3`V #ImV>  
while(l SortUtil.swap(data,l,r); :?LUv:G  
SortUtil.swap(data,l,j); Wnp\yx`  
t)O8ON  
if((l-i)>THRESHOLD){ zkFx2(Hq-f  
stack[++top]=i;  3+[R !  
stack[++top]=l-1; IaDN[:SX  
} W{z7h[?5,  
if((j-l)>THRESHOLD){ KJ/ *BBf  
stack[++top]=l+1; }3{ x G+,  
stack[++top]=j; ]`p*ZTr)\  
} JYE[ 1M  
]yvHb)X  
} Fo$kD(  
file://new InsertSort().sort(data); !N, Oe<  
insertSort(data); 7hg)R @OC  
} ]!v:xjzT  
/** "JHd F&  
* @param data {w,g~ew `  
*/ 5]c'n  
private void insertSort(int[] data) { jB"?iC.  
int temp; w=ZSyT-i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `V(z z  
} n"p|tEK  
} =TTk5(m  
} ;QRnZqSv  
h3}gg@Fm  
} , [V#o-Z  
&mG1V  
归并排序: d[cqs9=\  
Oa8lrP`(  
package org.rut.util.algorithm.support; C(RZ09,.S  
8$c_M   
import org.rut.util.algorithm.SortUtil; =th(Hdk17  
E{Gkq:  
/** Jp'XZ]o\  
* @author treeroot 2;82*0Y%  
* @since 2006-2-2  k|Xxr  
* @version 1.0 qHAZ)Tz  
*/ Y,?!"  
public class MergeSort implements SortUtil.Sort{ ??4#)n k  
G`a,(<kT;  
/* (non-Javadoc) aJQx"6 c?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p "J^  
*/ ;8?i  
public void sort(int[] data) { Ezvm5~<  
int[] temp=new int[data.length]; 7wO0d/l_  
mergeSort(data,temp,0,data.length-1);  D8w:c6b  
} mKsTA;  
6:(R/9!P  
private void mergeSort(int[] data,int[] temp,int l,int r){ efK3{   
int mid=(l+r)/2; G>3]A5  
if(l==r) return ; T)!$-qdz/  
mergeSort(data,temp,l,mid); $& 0hpg  
mergeSort(data,temp,mid+1,r); $O+e+Y  
for(int i=l;i<=r;i++){ gK`o ;` ^  
temp=data; 1l8kuwH  
} +c8cyx:^f  
int i1=l; [(hB%x_"  
int i2=mid+1; /SXms'C  
for(int cur=l;cur<=r;cur++){ Sxj _gn  
if(i1==mid+1) SGZ]_  
data[cur]=temp[i2++]; gwf *M3(  
else if(i2>r) ~miRnW*x  
data[cur]=temp[i1++]; /~4wM#Yi8  
else if(temp[i1] data[cur]=temp[i1++]; BIFuQ?j3  
else v(ATbY75  
data[cur]=temp[i2++]; ~JU :a@)  
} sRM3G]nUr  
} S$=e %c  
.7BB*!CP  
} =:|fN3nJ2  
ylV.ZoY6  
改进后的归并排序: ;}=4z^^5  
FY^#%0~  
package org.rut.util.algorithm.support; 75O-%9lFF  
z3RlD"F1  
import org.rut.util.algorithm.SortUtil; v,\2$q/  
6X@]<R  
/** BUuU#e5  
* @author treeroot :4{;^|RgU  
* @since 2006-2-2 +<^TyIJ0  
* @version 1.0 ]h Dy]  
*/ zF& >1y.$  
public class ImprovedMergeSort implements SortUtil.Sort { ?q68{!{bi  
!'-|]xx(  
private static final int THRESHOLD = 10; nvJ2V $  
]^='aQ  
/*  >%~E <  
* (non-Javadoc) rCwjy&SuU^  
* wU\3"!^h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1I'ep\`"X  
*/ K?y!zy  
public void sort(int[] data) { Yj^| j  
int[] temp=new int[data.length]; $] js0 )>  
mergeSort(data,temp,0,data.length-1); 9Q!X~L|\S  
} ,oW8im   
VW7 ?{EL7  
private void mergeSort(int[] data, int[] temp, int l, int r) { I+) Acy;  
int i, j, k; aZe[Nos  
int mid = (l + r) / 2; w85PRruW  
if (l == r) nly`\0C  
return; H:~41f[  
if ((mid - l) >= THRESHOLD) x?ajTzMv  
mergeSort(data, temp, l, mid); 'xO^2m+N;  
else =w~phn  
insertSort(data, l, mid - l + 1); }v'jFIkhI  
if ((r - mid) > THRESHOLD) S?Y,sl+A:  
mergeSort(data, temp, mid + 1, r); p'2ZDd =v  
else `_IgH  
insertSort(data, mid + 1, r - mid); HiBw==vlV  
9s5PJj"u  
for (i = l; i <= mid; i++) { UTatcn  
temp = data; :v_H;UU  
} mUj=NRq  
for (j = 1; j <= r - mid; j++) { 9d7$Fz#  
temp[r - j + 1] = data[j + mid]; G/F0 )M  
} @K 8sNPK  
int a = temp[l]; Pkr0| bs*  
int b = temp[r]; Y.O/~af  
for (i = l, j = r, k = l; k <= r; k++) { I2@pkVv3z  
if (a < b) { 0]dL;~0y.  
data[k] = temp[i++]; 4{d`-reHg  
a = temp; W$x'+t5H  
} else { FFTh}>>  
data[k] = temp[j--]; bDLPA27  
b = temp[j]; MZt~ Abt  
} G22= 8V  
} $-dz1}  
} Td&w  
C<!%VHs  
/** XYbc1+C  
* @param data yqpb_h9  
* @param l qTA@0fL  
* @param i PvzB, 2":  
*/ Kt,ENbF  
private void insertSort(int[] data, int start, int len) { t]Ey~-Rx  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EUv xil  
} ^Zh YW  
} `>@n6>f  
} r5!I|E  
} iJg3`1@j  
8oI)q4V  
堆排序: q]%c 6{w  
kRBPl9 9  
package org.rut.util.algorithm.support; ^(p}hSLAfQ  
:tu_@3bg-  
import org.rut.util.algorithm.SortUtil; sjLI^#a  
ER:)Fk>_  
/** ?)9mHo^  
* @author treeroot rC>')`uk  
* @since 2006-2-2 Ku{DdiTg>  
* @version 1.0 x\vb@!BZ  
*/ C LhD[/Fo  
public class HeapSort implements SortUtil.Sort{ /? n 9c;w  
Ak!l}d  
/* (non-Javadoc) X!0s__IOc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vb{+yEa  
*/ Dm': D  
public void sort(int[] data) { ]k[y#oB  
MaxHeap h=new MaxHeap(); [@@Ovv  
h.init(data); 4  |$|]E  
for(int i=0;i h.remove(); > m GO08X  
System.arraycopy(h.queue,1,data,0,data.length); GI}h )T  
} |q?I(b4Q@  
XDvT#(Pu  
private static class MaxHeap{ U!sv6=(y@  
N{@kgc  
void init(int[] data){ s}Q%]W  
this.queue=new int[data.length+1]; G`NH ~C  
for(int i=0;i queue[++size]=data; hS4Ljyeg  
fixUp(size); 8H_3.MK  
} ^'DrU< o  
} {5U;9: sO6  
7kM_Ijd$  
private int size=0; O$B]#]L+  
372ewh3'  
private int[] queue; JcxhI]E  
pmAir:  
public int get() { /U[Y w)  
return queue[1]; C !81Km5  
} B[^mWVp6L  
r=dFk?8XbC  
public void remove() { DoA4#+RU  
SortUtil.swap(queue,1,size--); kStWsc$;+T  
fixDown(1); ?6@Y"5 z3g  
} vB, X)  
file://fixdown LV{a^!f`y  
private void fixDown(int k) { V|vU17Cgy  
int j; t#mW`rGE_  
while ((j = k << 1) <= size) { Gnmj-'x  
if (j < size %26amp;%26amp; queue[j] j++; Y3jb 'S4(  
if (queue[k]>queue[j]) file://不用交换 c$ Kn.<a  
break; mP GF Y  
SortUtil.swap(queue,j,k); +` B m  
k = j; v`B7[B4K3  
} ^I9x@t  
} W&y%fd\&3  
private void fixUp(int k) { Zk2-U"0\o  
while (k > 1) { XiI@Px?FL  
int j = k >> 1; ymybj  
if (queue[j]>queue[k]) ,WbO8#z+  
break; BuI&kU,WY  
SortUtil.swap(queue,j,k); 5B| iBS l  
k = j; R% XbO~{u  
} z7F~;IB*u  
} ^lB'7#7  
!<}<HR^ )  
} sj003jeko  
ptGM'  
} |_HH[s*U  
 3+"z  
SortUtil: ?f[#O&#  
eu ~WFI  
package org.rut.util.algorithm; +Ck<tx3h&  
?G+v#?A  
import org.rut.util.algorithm.support.BubbleSort; NMmk,  
import org.rut.util.algorithm.support.HeapSort; R`Hyg4?  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z<z(;)?c  
import org.rut.util.algorithm.support.ImprovedQuickSort; IX;u+B  
import org.rut.util.algorithm.support.InsertSort; |eWlB\ x8  
import org.rut.util.algorithm.support.MergeSort; <oTIzj7f  
import org.rut.util.algorithm.support.QuickSort; N54U [sy  
import org.rut.util.algorithm.support.SelectionSort; I :%(nKBK  
import org.rut.util.algorithm.support.ShellSort; P-[6xu+]  
"zR+}  
/** Z1u{.^~^z  
* @author treeroot 5YMjvhr?W  
* @since 2006-2-2 4dv+RRpGOv  
* @version 1.0 B|gyr4]  
*/ Zz= +?L  
public class SortUtil { bTE%p0  
public final static int INSERT = 1; *^ncb,1+i  
public final static int BUBBLE = 2; n  !]_o  
public final static int SELECTION = 3; yb56nd  
public final static int SHELL = 4; > y"V%  
public final static int QUICK = 5; 5Y)*-JY1g  
public final static int IMPROVED_QUICK = 6; & ,2XrXiFu  
public final static int MERGE = 7; I0sd%'Ht?  
public final static int IMPROVED_MERGE = 8; U)=?3}s(  
public final static int HEAP = 9; ^k]OQc7q'  
>7B6iR6N  
public static void sort(int[] data) { Eic/#j{4  
sort(data, IMPROVED_QUICK); DG}t!  
} y[oc^Zuo  
private static String[] name={ |"?0H#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )t{?7wy  
}; ir-srVoXy  
xrxORtJ<  
private static Sort[] impl=new Sort[]{ 6%~ Z^>`N  
new InsertSort(), i]a 5cn  
new BubbleSort(), ,]\L\ V  
new SelectionSort(), Zsc710_  
new ShellSort(), *=mtt^yZ  
new QuickSort(), xCz(qR  
new ImprovedQuickSort(), @v\Osp t=  
new MergeSort(), Z0s}65BR  
new ImprovedMergeSort(), wP8Wx~Q=  
new HeapSort() |jH- bm  
}; C|bnUN  
*,q ?mO  
public static String toString(int algorithm){ IWERn v!  
return name[algorithm-1]; '`&gSL.1a@  
} SB0Cq  
/ CEnyE/  
public static void sort(int[] data, int algorithm) { \/J>I1J  
impl[algorithm-1].sort(data); ZpvURp,I  
} AE? 0UVI  
F9p'|-   
public static interface Sort { `w';}sQA7  
public void sort(int[] data);  u:JD  
} ~x^E kE  
`dekaRo  
public static void swap(int[] data, int i, int j) { 8Yc'4v#}  
int temp = data; ~o_0RB  
data = data[j]; k=!lPIx  
data[j] = temp; lHQ:LI  
} KK$t3e)  
} w#mnab@  
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