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add 172 folder & cpp, add 190 folder & cpp, add 434 folder & cpp

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+38

-0

lines changed

solution
- 172.Factorial Trailing Zeroes
  - Solution.cpp
- 190.Reverse Bits
  - Solution.cpp
- 434.Number of Segments in a String
  - Solution.cpp

3 files changed

+38

-0

lines changed

`‎solution/172.Factorial Trailing Zeroes/Solution.cpp‎`

Lines changed: 9 additions & 0 deletions

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`@@ -0,0 +1,9 @@`
	`1`	`+class Solution {`
	`2`	`+public:`
	`3`	`+ int trailingZeroes(int n) {`
	`4`	`+ int cnt5 = 0 ;`
	`5`	`+ for (long long i = 5; i <= n; i *= 5)`
	`6`	`+ cnt5 += n/i ;`
	`7`	`+ return cnt5 ;`
	`8`	`+ }`
	`9`	`+};`

`‎solution/190.Reverse Bits/Solution.cpp‎`

Lines changed: 16 additions & 0 deletions

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`@@ -0,0 +1,16 @@`
	`1`	`+class Solution {`
	`2`	`+public:`
	`3`	`+ uint32_t reverseBits(uint32_t n) {`
	`4`	`+ uint32_t res = 0 ;`
	`5`	`+ uint32_t tmp = 1 << 31 ;`
	`6`	`+ while (n)`
	`7`	`+ {`
	`8`	`+ if (n&1)`
	`9`	`+ res \|= tmp ;`
	`10`	`+ tmp >>= 1 ;`
	`11`	`+ n >>= 1 ;`
	`12`	`+ }`
	`13`	`+`
	`14`	`+ return res ;`
	`15`	`+ }`
	`16`	`+};`

`‎solution/434.Number of Segments in a String/Solution.cpp‎`

Lines changed: 13 additions & 0 deletions

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	`1`	`+class Solution {`
	`2`	`+public:`
	`3`	`+ int countSegments(string s) {`
	`4`	`+ if (s.length() < 1)`
	`5`	`+ return 0 ;`
	`6`	`+`
	`7`	`+ int cnt = isspace(s[0])? 0: 1 ;`
	`8`	`+ for (int i = 1; i < s.length(); ++i)`
	`9`	`+ if (!isspace(s[i]) && isspace(s[i-1]))`
	`10`	`+ ++cnt ;`
	`11`	`+ return cnt ;`
	`12`	`+ }`
	`13`	`+};`

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