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Merge pull requestneetcode-gh#2822 from chetannada/ltc-1688-js

Create 1688-count-of-matches-in-tournament.js

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	`1`	`+/**`
	`2`	`+ *@param {number} n`
	`3`	`+ *@return {number}`
	`4`	`+ */`
	`5`	`+varnumberOfMatches=function(n){`
	`6`	`+letmatches=0;// initialize matches to zero`
	`7`	`+letnum=n;// initialize num equal to n`
	`8`	`+for(leti=0;i<n;i++){// loop through the number n`
	`9`	`+if(num==1){// if num is equal to 1 then break the for loop`
	`10`	`+break;`
	`11`	`+}else{// else`
	`12`	`+if(num%2==0){// if num is even`
	`13`	`+letdivide=num/2;// divide num by 2`
	`14`	`+matches+=divide;// add divide to matches`
	`15`	`+num-=divide;// subtract divide to num`
	`16`	`+}else{// else`
	`17`	`+letdivide=(num-1)/2;// subtract num by 1 and then divide it by 2`
	`18`	`+matches+=divide;// add divide to matches`
	`19`	`+num-=divide;// subtract divide to num`
	`20`	`+}`
	`21`	`+}`
	`22`	`+}`
	`23`	`+returnmatches;// return number matches`
	`24`	`+};`

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