g0401_0500.s0405_convert_a_number_to_hexadecimal.Solution Maven / Gradle / Ivy
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Java-based LeetCode algorithm problem solutions, regularly updated
package g0401_0500.s0405_convert_a_number_to_hexadecimal;
// #Easy #Math #Bit_Manipulation #2022_07_16_Time_1_ms_(71.02%)_Space_42.2_MB_(15.68%)
public class Solution {
public String toHex(int num) {
if (num == 0) {
return "0";
}
StringBuilder sb = new StringBuilder();
int x;
while (num != 0) {
x = num & 0xf;
if (x < 10) {
sb.append(x);
} else {
sb.append((char) (x + 87));
}
num = num >>> 4;
}
return sb.reverse().toString();
}
}