Commit84c0414

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Phone Directory

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	`1`	`+packagemedium;`
	`2`	`+`
	`3`	`+publicclassPhoneDirectory {`
	`4`	`+`
	`5`	`+boolean[]availableNumbers;`
	`6`	`+`
	`7`	`+/** Initialize your data structure here`
	`8`	`+ @param maxNumbers - The maximum numbers that can be stored in the phone directory. */`
	`9`	`+publicPhoneDirectory(intmaxNumbers) {`
	`10`	`+availableNumbers =newboolean[maxNumbers];`
	`11`	`+for(inti =0;i <maxNumbers;i++){`
	`12`	`+availableNumbers[i] =true;`
	`13`	`+ }`
	`14`	`+ }`
	`15`	`+`
	`16`	`+/** Provide a number which is not assigned to anyone.`
	`17`	`+ @return - Return an available number. Return -1 if none is available. */`
	`18`	`+publicintget() {`
	`19`	`+for(inti =0;i <availableNumbers.length;i++){`
	`20`	`+if(availableNumbers[i]) {`
	`21`	`+availableNumbers[i] =false;`
	`22`	`+returni;`
	`23`	`+ }`
	`24`	`+ }`
	`25`	`+return -1;`
	`26`	`+ }`
	`27`	`+`
	`28`	`+/** Check if a number is available or not. */`
	`29`	`+publicbooleancheck(intnumber) {`
	`30`	`+returnavailableNumbers[number];`
	`31`	`+ }`
	`32`	`+`
	`33`	`+/** Recycle or release a number. */`
	`34`	`+publicvoidrelease(intnumber) {`
	`35`	`+availableNumbers[number] =true;`
	`36`	`+ }`
	`37`	`+`
	`38`	`+}`

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