14-longest-common-prefix.go

package main

func longestCommonPrefix(strs []string) string {
	prefix := strs[0]

	for i := 1; i < len(strs); i++ {
		for j := 0; j < len(prefix); j++ {
			if len(strs[i]) <= j || strs[i][j] != prefix[j] {
				prefix = prefix[:j]
				break
			}
		}
	}
	return prefix
}