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This commit is contained in:
Arkaprabha Chakraborty
2022-07-26 16:15:18 +05:30
commit cef4c4dcc4
65 changed files with 1806 additions and 0 deletions
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70
Medium/string-to-integer-atoi/solution.cpp Normal file
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class Solution {
public:
int myAtoi(std::string s) {
unsigned long value = 0;
bool found = false, minus = false, signi = false;
for (int i = 0, j = 0; i <= 200; ++i) {
char chr = s[i];
if (j > 18)
break;
else if ((int)chr == 0)
break;
else if (((int)chr == 43 || (int)chr == 45) && !found) {
if ((int)chr == 45)
minus = true;
found = true;
continue;
}
else if (((int)chr == 43 || (int)chr == 45) && found) {
break;
}
else if (((int)chr == 46 || ((int)chr >= 65 && (int)chr <= 90) ||
((int)chr >= 97 && (int)chr <= 122)) &&
!found) {
break;
}
else if (((int)chr == 46 || ((int)chr >= 65 && (int)chr <= 90) ||
((int)chr >= 97 && (int)chr <= 122)) &&
found) {
break;
}
else if ((int)chr == 32 && found)
break;
else if ((int)chr >= 48 && (int)chr <= 57) {
if ((int)chr != 48)
signi = true;
value = value * 10 + ((int)chr - 48);
found = true;
if (signi)
++j;
continue;
}
else if ((int)chr == 32 && !found)
continue;
}
if (value > 2147483648 && minus)
return -2147483648;
else if (minus)
return value * -1;
else if (value > 2147483647)
return 2147483647;
else
return value;
}
};